java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:34:07,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:34:07,456 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:34:07,469 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:34:07,469 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:34:07,470 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:34:07,472 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:34:07,474 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:34:07,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:34:07,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:34:07,478 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 20:34:07,506 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 [2018-09-30 20:34:07,525 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:34:07,526 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:34:07,527 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:34:07,527 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:34:07,528 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:34:07,528 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:34:07,528 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:34:07,528 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:34:07,529 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:34:07,529 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:34:07,529 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:34:07,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:34:07,529 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:34:07,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:34:07,530 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:34:07,530 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:34:07,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:34:07,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:34:07,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:34:07,531 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:34:07,531 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:34:07,531 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:34:07,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:34:07,532 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:34:07,532 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:34:07,532 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:34:07,532 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:34:07,533 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:34:07,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:34:07,533 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:34:07,533 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:34:07,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:34:07,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:34:07,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:34:07,604 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:34:07,605 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:34:07,606 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-09-30 20:34:07,606 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-09-30 20:34:07,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:34:07,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:34:07,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:34:07,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:34:07,664 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:34:07,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,704 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 20:34:07,704 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 20:34:07,704 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 20:34:07,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:34:07,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:34:07,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:34:07,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:34:07,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/1) ... [2018-09-30 20:34:07,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:34:07,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:34:07,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:34:07,732 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:34:07,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (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 [2018-09-30 20:34:07,816 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-30 20:34:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-30 20:34:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-30 20:34:08,143 INFO L345 CfgBuilder]: Using library mode [2018-09-30 20:34:08,143 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:34:08 BoogieIcfgContainer [2018-09-30 20:34:08,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:34:08,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:34:08,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:34:08,152 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:34:08,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:34:07" (1/2) ... [2018-09-30 20:34:08,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2eeff0 and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:34:08, skipping insertion in model container [2018-09-30 20:34:08,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:34:08" (2/2) ... [2018-09-30 20:34:08,157 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-09-30 20:34:08,168 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:34:08,176 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:34:08,227 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:34:08,228 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:34:08,229 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:34:08,229 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:34:08,229 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:34:08,229 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:34:08,229 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:34:08,230 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:34:08,230 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:34:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 20:34:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 20:34:08,254 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:08,255 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 20:34:08,257 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:08,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-09-30 20:34:08,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:08,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:08,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:08,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:08,429 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:34:08,430 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:34:08,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:34:08,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:34:08,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:08,456 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 20:34:08,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:08,644 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-09-30 20:34:08,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:34:08,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 20:34:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:08,658 INFO L225 Difference]: With dead ends: 19 [2018-09-30 20:34:08,659 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 20:34:08,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:34:08,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 20:34:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-30 20:34:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 20:34:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-30 20:34:08,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-09-30 20:34:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:08,696 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-30 20:34:08,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:34:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-30 20:34:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:34:08,697 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:08,697 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:34:08,697 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:08,697 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:08,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-09-30 20:34:08,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:08,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:08,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:08,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:08,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:08,793 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 [2018-09-30 20:34:08,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:08,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:09,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:09,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-30 20:34:09,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:34:09,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:34:09,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:09,139 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-09-30 20:34:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:09,599 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 20:34:09,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:34:09,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 20:34:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:09,601 INFO L225 Difference]: With dead ends: 21 [2018-09-30 20:34:09,601 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 20:34:09,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:34:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 20:34:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-09-30 20:34:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 20:34:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-30 20:34:09,607 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-30 20:34:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:09,608 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-30 20:34:09,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:34:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-30 20:34:09,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:34:09,609 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:09,609 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:34:09,610 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:09,610 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:09,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-09-30 20:34:09,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:09,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:09,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:09,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:09,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:09,703 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:34:09,703 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:34:09,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:34:09,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:34:09,704 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:09,704 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-09-30 20:34:09,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:09,740 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 20:34:09,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:34:09,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-30 20:34:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:09,742 INFO L225 Difference]: With dead ends: 21 [2018-09-30 20:34:09,742 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 20:34:09,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:34:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 20:34:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 20:34:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 20:34:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-30 20:34:09,747 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-09-30 20:34:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:09,748 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-30 20:34:09,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:34:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-30 20:34:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 20:34:09,749 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:09,749 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-30 20:34:09,749 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:09,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-09-30 20:34:09,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:09,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:09,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:09,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:09,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:09,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:09,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:34:09,881 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:09,924 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:09,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:09,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:10,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:10,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-30 20:34:10,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:34:10,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:34:10,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:10,312 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-09-30 20:34:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:11,072 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-30 20:34:11,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:34:11,073 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-09-30 20:34:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:11,074 INFO L225 Difference]: With dead ends: 25 [2018-09-30 20:34:11,074 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 20:34:11,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:34:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 20:34:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-30 20:34:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 20:34:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-09-30 20:34:11,080 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-09-30 20:34:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:11,081 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-09-30 20:34:11,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:34:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-09-30 20:34:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:34:11,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:11,082 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-30 20:34:11,083 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:11,083 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:11,083 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-09-30 20:34:11,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:11,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:11,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:11,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:11,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:11,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:11,251 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 [2018-09-30 20:34:11,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:11,276 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 20:34:11,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:11,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:11,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:11,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-30 20:34:11,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:34:11,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:34:11,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:11,679 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-09-30 20:34:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:12,010 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-30 20:34:12,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:34:12,014 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 20:34:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:12,015 INFO L225 Difference]: With dead ends: 30 [2018-09-30 20:34:12,015 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 20:34:12,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:34:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 20:34:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-30 20:34:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 20:34:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-09-30 20:34:12,020 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-09-30 20:34:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:12,021 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-09-30 20:34:12,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:34:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-09-30 20:34:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 20:34:12,022 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:12,022 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-30 20:34:12,023 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:12,023 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:12,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-09-30 20:34:12,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:12,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:12,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:12,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:12,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:12,233 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:12,233 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 [2018-09-30 20:34:12,241 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:12,254 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:12,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:12,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:12,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:12,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 20:34:12,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:34:12,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:34:12,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:12,640 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-09-30 20:34:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:13,176 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-30 20:34:13,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:34:13,177 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-09-30 20:34:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:13,179 INFO L225 Difference]: With dead ends: 35 [2018-09-30 20:34:13,179 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 20:34:13,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:34:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 20:34:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-30 20:34:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 20:34:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-09-30 20:34:13,185 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-09-30 20:34:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:13,185 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-09-30 20:34:13,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:34:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-09-30 20:34:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 20:34:13,186 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:13,187 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-30 20:34:13,187 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:13,187 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:13,187 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-09-30 20:34:13,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:13,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:13,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:13,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:13,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:13,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:13,355 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 [2018-09-30 20:34:13,366 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:13,381 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 20:34:13,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:13,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:14,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:14,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-30 20:34:14,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 20:34:14,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 20:34:14,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:14,276 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-09-30 20:34:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:14,819 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-09-30 20:34:14,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:34:14,820 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-09-30 20:34:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:14,821 INFO L225 Difference]: With dead ends: 40 [2018-09-30 20:34:14,821 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 20:34:14,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:34:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 20:34:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-30 20:34:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 20:34:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-30 20:34:14,828 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-09-30 20:34:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:14,828 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-30 20:34:14,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 20:34:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-30 20:34:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 20:34:14,830 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:14,830 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-30 20:34:14,830 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:14,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-09-30 20:34:14,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:14,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:14,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:14,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:14,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:14,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:14,973 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 [2018-09-30 20:34:14,982 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:15,001 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 20:34:15,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:15,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:15,564 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:15,564 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-30 20:34:15,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 20:34:15,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 20:34:15,565 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:15,565 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-09-30 20:34:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:16,090 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-09-30 20:34:16,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:34:16,092 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-09-30 20:34:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:16,093 INFO L225 Difference]: With dead ends: 45 [2018-09-30 20:34:16,093 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 20:34:16,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:34:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 20:34:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-30 20:34:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 20:34:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-09-30 20:34:16,099 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-09-30 20:34:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:16,099 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-09-30 20:34:16,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 20:34:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-09-30 20:34:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 20:34:16,101 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:16,101 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-30 20:34:16,101 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:16,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-09-30 20:34:16,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:16,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:16,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:16,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:16,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:16,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:16,301 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 [2018-09-30 20:34:16,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:16,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:16,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:16,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-30 20:34:16,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 20:34:16,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 20:34:16,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:16,857 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-09-30 20:34:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:17,707 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-09-30 20:34:17,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:34:17,708 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-09-30 20:34:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:17,709 INFO L225 Difference]: With dead ends: 50 [2018-09-30 20:34:17,710 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 20:34:17,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:34:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 20:34:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-30 20:34:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 20:34:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-30 20:34:17,716 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-09-30 20:34:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:17,717 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-30 20:34:17,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 20:34:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-30 20:34:17,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 20:34:17,718 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:17,719 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-30 20:34:17,719 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:17,719 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:17,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-09-30 20:34:17,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:17,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:17,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:17,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:17,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:17,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:17,965 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 [2018-09-30 20:34:17,976 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:17,997 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:17,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:17,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:18,660 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:18,660 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-30 20:34:18,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 20:34:18,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 20:34:18,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:18,663 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-09-30 20:34:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:19,127 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-09-30 20:34:19,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:34:19,127 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-09-30 20:34:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:19,128 INFO L225 Difference]: With dead ends: 55 [2018-09-30 20:34:19,128 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 20:34:19,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:34:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 20:34:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-30 20:34:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 20:34:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-09-30 20:34:19,134 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-09-30 20:34:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:19,135 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-09-30 20:34:19,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 20:34:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-09-30 20:34:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 20:34:19,136 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:19,136 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-30 20:34:19,137 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:19,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:19,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-09-30 20:34:19,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:19,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:19,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:19,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:19,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:19,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:19,354 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 [2018-09-30 20:34:19,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:19,412 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 20:34:19,412 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:19,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:21,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:21,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-30 20:34:21,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 20:34:21,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 20:34:21,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:21,537 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-09-30 20:34:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:22,681 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-09-30 20:34:22,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:34:22,681 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-09-30 20:34:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:22,682 INFO L225 Difference]: With dead ends: 60 [2018-09-30 20:34:22,683 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 20:34:22,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-09-30 20:34:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 20:34:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-30 20:34:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 20:34:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-09-30 20:34:22,689 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-09-30 20:34:22,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:22,689 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-09-30 20:34:22,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 20:34:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-09-30 20:34:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 20:34:22,690 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:22,690 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-30 20:34:22,691 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:22,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-09-30 20:34:22,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:22,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:22,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:22,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:22,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:23,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:23,331 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 [2018-09-30 20:34:23,342 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:23,389 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:23,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:23,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:24,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:24,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-30 20:34:24,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 20:34:24,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 20:34:24,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:24,136 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-09-30 20:34:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:24,946 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-30 20:34:24,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 20:34:24,947 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-09-30 20:34:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:24,948 INFO L225 Difference]: With dead ends: 65 [2018-09-30 20:34:24,948 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 20:34:24,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:34:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 20:34:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-30 20:34:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 20:34:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-09-30 20:34:24,955 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-09-30 20:34:24,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:24,955 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-09-30 20:34:24,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 20:34:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-09-30 20:34:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 20:34:24,956 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:24,956 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-30 20:34:24,956 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:24,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-09-30 20:34:24,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:24,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:24,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:24,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:24,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:25,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:25,162 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 [2018-09-30 20:34:25,170 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:25,189 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 20:34:25,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:25,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:25,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:25,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-30 20:34:25,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 20:34:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 20:34:25,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:25,912 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-09-30 20:34:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:26,724 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-09-30 20:34:26,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:34:26,725 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-09-30 20:34:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:26,726 INFO L225 Difference]: With dead ends: 70 [2018-09-30 20:34:26,726 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 20:34:26,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:34:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 20:34:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-30 20:34:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 20:34:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-09-30 20:34:26,734 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-09-30 20:34:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:26,734 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-09-30 20:34:26,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 20:34:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-09-30 20:34:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 20:34:26,735 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:26,735 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-30 20:34:26,736 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:26,736 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:26,736 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-09-30 20:34:26,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:26,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:26,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:26,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:26,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:27,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:27,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:34:27,182 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:27,216 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 20:34:27,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:27,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:27,925 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:27,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-30 20:34:27,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 20:34:27,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 20:34:27,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:27,927 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-09-30 20:34:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:28,506 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-09-30 20:34:28,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:34:28,507 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-09-30 20:34:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:28,508 INFO L225 Difference]: With dead ends: 75 [2018-09-30 20:34:28,508 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 20:34:28,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:34:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 20:34:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-30 20:34:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 20:34:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-09-30 20:34:28,516 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-09-30 20:34:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:28,516 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-09-30 20:34:28,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 20:34:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-09-30 20:34:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 20:34:28,518 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:28,518 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-30 20:34:28,518 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:28,518 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:28,518 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-09-30 20:34:28,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:28,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:28,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:28,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:28,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:28,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:28,796 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 [2018-09-30 20:34:28,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:28,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:29,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:29,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-30 20:34:29,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 20:34:29,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 20:34:29,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:29,556 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-09-30 20:34:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:30,531 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-09-30 20:34:30,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:34:30,531 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-09-30 20:34:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:30,532 INFO L225 Difference]: With dead ends: 80 [2018-09-30 20:34:30,532 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 20:34:30,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:34:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 20:34:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-30 20:34:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 20:34:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-09-30 20:34:30,538 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-09-30 20:34:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:30,539 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-09-30 20:34:30,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 20:34:30,539 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-09-30 20:34:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 20:34:30,540 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:30,540 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-30 20:34:30,540 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:30,541 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:30,541 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-09-30 20:34:30,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:30,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:30,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:30,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:30,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:30,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:30,925 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:34:30,934 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:30,977 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:30,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:30,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:31,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:31,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-30 20:34:31,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 20:34:31,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 20:34:31,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:31,589 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-09-30 20:34:32,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:32,578 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-09-30 20:34:32,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 20:34:32,579 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-09-30 20:34:32,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:32,579 INFO L225 Difference]: With dead ends: 85 [2018-09-30 20:34:32,579 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 20:34:32,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:34:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 20:34:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-30 20:34:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 20:34:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-09-30 20:34:32,585 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-09-30 20:34:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:32,586 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-09-30 20:34:32,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 20:34:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-09-30 20:34:32,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 20:34:32,587 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:32,587 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-30 20:34:32,587 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:32,587 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:32,587 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-09-30 20:34:32,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:32,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:32,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:32,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:32,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:32,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:32,840 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 [2018-09-30 20:34:32,848 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:32,875 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 20:34:32,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:32,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:33,624 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:33,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-30 20:34:33,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 20:34:33,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 20:34:33,625 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:33,626 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-09-30 20:34:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:34,456 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-30 20:34:34,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 20:34:34,457 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-09-30 20:34:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:34,457 INFO L225 Difference]: With dead ends: 90 [2018-09-30 20:34:34,457 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 20:34:34,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:34:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 20:34:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-30 20:34:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 20:34:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-09-30 20:34:34,463 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-09-30 20:34:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:34,463 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-09-30 20:34:34,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 20:34:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-09-30 20:34:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 20:34:34,464 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:34,465 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-30 20:34:34,465 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:34,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:34,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-09-30 20:34:34,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:34,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:34,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:34,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:34,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:35,619 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:35,619 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:34:35,634 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:35,657 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:35,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:35,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:36,546 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:36,546 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-30 20:34:36,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 20:34:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 20:34:36,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:36,547 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-09-30 20:34:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:37,711 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-09-30 20:34:37,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 20:34:37,711 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-09-30 20:34:37,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:37,712 INFO L225 Difference]: With dead ends: 95 [2018-09-30 20:34:37,712 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:34:37,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-09-30 20:34:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:34:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-30 20:34:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 20:34:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-09-30 20:34:37,717 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-09-30 20:34:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:37,717 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-09-30 20:34:37,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 20:34:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-09-30 20:34:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 20:34:37,718 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:37,719 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-30 20:34:37,719 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:37,719 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:37,719 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-09-30 20:34:37,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:37,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:37,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:37,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:37,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:38,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:38,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:34:38,252 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:38,298 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 20:34:38,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:38,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:39,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:39,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-30 20:34:39,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 20:34:39,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 20:34:39,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:39,346 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-09-30 20:34:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:40,364 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-09-30 20:34:40,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:34:40,364 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-09-30 20:34:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:40,365 INFO L225 Difference]: With dead ends: 100 [2018-09-30 20:34:40,365 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 20:34:40,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:34:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 20:34:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-30 20:34:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 20:34:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-09-30 20:34:40,370 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-09-30 20:34:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:40,370 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-09-30 20:34:40,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 20:34:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-09-30 20:34:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 20:34:40,371 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:40,372 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-30 20:34:40,372 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:40,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:40,372 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-09-30 20:34:40,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:40,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:40,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:40,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:40,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:40,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:40,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:34:40,871 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:40,906 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 20:34:40,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:40,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:41,841 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:41,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-30 20:34:41,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 20:34:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 20:34:41,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:41,843 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-09-30 20:34:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:43,170 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-09-30 20:34:43,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 20:34:43,170 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-09-30 20:34:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:43,171 INFO L225 Difference]: With dead ends: 105 [2018-09-30 20:34:43,171 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 20:34:43,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:34:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 20:34:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-30 20:34:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 20:34:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-09-30 20:34:43,174 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-09-30 20:34:43,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:43,175 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-09-30 20:34:43,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 20:34:43,175 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-09-30 20:34:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 20:34:43,175 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:43,176 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-30 20:34:43,176 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:43,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-09-30 20:34:43,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:43,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:43,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:43,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:43,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:43,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:43,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:34:43,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:43,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:45,075 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:45,076 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-30 20:34:45,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 20:34:45,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 20:34:45,077 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:45,077 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-09-30 20:34:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:46,363 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-09-30 20:34:46,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 20:34:46,365 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-09-30 20:34:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:46,365 INFO L225 Difference]: With dead ends: 110 [2018-09-30 20:34:46,366 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 20:34:46,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:34:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 20:34:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-30 20:34:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 20:34:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-09-30 20:34:46,370 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-09-30 20:34:46,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:46,371 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-09-30 20:34:46,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 20:34:46,371 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-09-30 20:34:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 20:34:46,372 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:46,372 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-30 20:34:46,372 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:46,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:46,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-09-30 20:34:46,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:46,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:46,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:46,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:34:46,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:46,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:46,763 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 [2018-09-30 20:34:46,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:34:46,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:34:46,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:46,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:48,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:48,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-30 20:34:48,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 20:34:48,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 20:34:48,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:48,796 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-09-30 20:34:50,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:50,083 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-30 20:34:50,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:34:50,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-09-30 20:34:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:50,085 INFO L225 Difference]: With dead ends: 115 [2018-09-30 20:34:50,086 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 20:34:50,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-09-30 20:34:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 20:34:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-30 20:34:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 20:34:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-09-30 20:34:50,091 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-09-30 20:34:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:50,092 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-09-30 20:34:50,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 20:34:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-09-30 20:34:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 20:34:50,092 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:50,093 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-30 20:34:50,093 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:50,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:50,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-09-30 20:34:50,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:50,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:50,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:50,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:50,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:50,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:50,484 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 [2018-09-30 20:34:50,492 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:34:50,526 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 20:34:50,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:50,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:51,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:51,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-30 20:34:51,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 20:34:51,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 20:34:51,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:51,579 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-09-30 20:34:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:52,966 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-09-30 20:34:52,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:34:52,967 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-09-30 20:34:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:52,967 INFO L225 Difference]: With dead ends: 120 [2018-09-30 20:34:52,967 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 20:34:52,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:34:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 20:34:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-30 20:34:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 20:34:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-09-30 20:34:52,972 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-09-30 20:34:52,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:52,973 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-09-30 20:34:52,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 20:34:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-09-30 20:34:52,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 20:34:52,973 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:52,974 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-30 20:34:52,974 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:52,974 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:52,974 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-09-30 20:34:52,974 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:52,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:52,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:52,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:52,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:53,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:53,434 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 [2018-09-30 20:34:53,442 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:34:53,468 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:34:53,468 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:53,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:54,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:54,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-30 20:34:54,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 20:34:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 20:34:54,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:54,590 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-09-30 20:34:55,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:55,970 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-09-30 20:34:55,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:34:55,971 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-09-30 20:34:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:55,971 INFO L225 Difference]: With dead ends: 125 [2018-09-30 20:34:55,972 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 20:34:55,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:34:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 20:34:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-30 20:34:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 20:34:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-09-30 20:34:55,977 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-09-30 20:34:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:55,978 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-09-30 20:34:55,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 20:34:55,978 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-09-30 20:34:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 20:34:55,978 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:55,978 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-30 20:34:55,978 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:55,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-09-30 20:34:55,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:55,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:55,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:55,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:55,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:56,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:56,474 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 [2018-09-30 20:34:56,481 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:34:56,518 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 20:34:56,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:56,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:34:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:57,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:34:57,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-30 20:34:57,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 20:34:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 20:34:57,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:34:57,881 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-09-30 20:34:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:34:59,262 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-09-30 20:34:59,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:34:59,262 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-09-30 20:34:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:34:59,263 INFO L225 Difference]: With dead ends: 130 [2018-09-30 20:34:59,263 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 20:34:59,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:34:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 20:34:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-30 20:34:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 20:34:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-09-30 20:34:59,268 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-09-30 20:34:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:34:59,268 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-09-30 20:34:59,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 20:34:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-09-30 20:34:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 20:34:59,269 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:34:59,269 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-30 20:34:59,269 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:34:59,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:34:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-09-30 20:34:59,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:34:59,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:34:59,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:59,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:34:59,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:34:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:34:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:34:59,755 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:34:59,755 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 [2018-09-30 20:34:59,768 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:34:59,807 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 20:34:59,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:34:59,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:01,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:01,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-30 20:35:01,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 20:35:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 20:35:01,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:01,060 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-09-30 20:35:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:02,520 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-09-30 20:35:02,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 20:35:02,520 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-09-30 20:35:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:02,521 INFO L225 Difference]: With dead ends: 135 [2018-09-30 20:35:02,521 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 20:35:02,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:35:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 20:35:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-30 20:35:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 20:35:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-09-30 20:35:02,528 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-09-30 20:35:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:02,529 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-09-30 20:35:02,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 20:35:02,529 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-09-30 20:35:02,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 20:35:02,530 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:02,530 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-30 20:35:02,530 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:02,530 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-09-30 20:35:02,531 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:02,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:02,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:02,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:02,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:03,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:03,112 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 [2018-09-30 20:35:03,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:03,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:04,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:04,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-30 20:35:04,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 20:35:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 20:35:04,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:04,243 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-09-30 20:35:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:05,884 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-09-30 20:35:05,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 20:35:05,885 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-09-30 20:35:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:05,886 INFO L225 Difference]: With dead ends: 140 [2018-09-30 20:35:05,886 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 20:35:05,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:35:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 20:35:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-30 20:35:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 20:35:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-09-30 20:35:05,891 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-09-30 20:35:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:05,891 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-09-30 20:35:05,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 20:35:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-09-30 20:35:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 20:35:05,891 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:05,892 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-30 20:35:05,892 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:05,892 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:05,892 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-09-30 20:35:05,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:05,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:05,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:05,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:05,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:07,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:07,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:35:07,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:35:07,061 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:35:07,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:07,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:09,074 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:09,075 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-30 20:35:09,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 20:35:09,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 20:35:09,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:09,076 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-09-30 20:35:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:10,954 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-09-30 20:35:10,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:35:10,954 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-09-30 20:35:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:10,955 INFO L225 Difference]: With dead ends: 145 [2018-09-30 20:35:10,955 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 20:35:10,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-09-30 20:35:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 20:35:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-30 20:35:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 20:35:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-09-30 20:35:10,959 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-09-30 20:35:10,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:10,960 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-09-30 20:35:10,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 20:35:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-09-30 20:35:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 20:35:10,960 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:10,960 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-30 20:35:10,961 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:10,961 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-09-30 20:35:10,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:10,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:10,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:10,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:10,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:11,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:11,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:35:11,497 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:35:11,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 20:35:11,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:11,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:12,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:12,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:12,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-30 20:35:12,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 20:35:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 20:35:12,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:12,858 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-09-30 20:35:14,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:14,455 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-09-30 20:35:14,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 20:35:14,455 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-09-30 20:35:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:14,456 INFO L225 Difference]: With dead ends: 150 [2018-09-30 20:35:14,456 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 20:35:14,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:35:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 20:35:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-30 20:35:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 20:35:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-09-30 20:35:14,462 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-09-30 20:35:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:14,463 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-09-30 20:35:14,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 20:35:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-09-30 20:35:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 20:35:14,464 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:14,464 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-30 20:35:14,464 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:14,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-09-30 20:35:14,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:14,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:14,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:14,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:14,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:15,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:15,002 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:35:15,012 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:35:15,044 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:35:15,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:15,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:16,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:16,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-30 20:35:16,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 20:35:16,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 20:35:16,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:16,746 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-09-30 20:35:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:18,365 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-09-30 20:35:18,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:35:18,366 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-09-30 20:35:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:18,367 INFO L225 Difference]: With dead ends: 155 [2018-09-30 20:35:18,367 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 20:35:18,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-09-30 20:35:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 20:35:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-30 20:35:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 20:35:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-09-30 20:35:18,373 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-09-30 20:35:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:18,374 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-09-30 20:35:18,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 20:35:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-09-30 20:35:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 20:35:18,375 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:18,375 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-30 20:35:18,375 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:18,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:18,375 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-09-30 20:35:18,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:18,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:18,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:18,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:18,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:19,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:19,090 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 [2018-09-30 20:35:19,097 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:35:19,145 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 20:35:19,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:19,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:20,677 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:20,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-30 20:35:20,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 20:35:20,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 20:35:20,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:20,679 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-09-30 20:35:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:22,395 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-09-30 20:35:22,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 20:35:22,396 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-09-30 20:35:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:22,397 INFO L225 Difference]: With dead ends: 160 [2018-09-30 20:35:22,397 INFO L226 Difference]: Without dead ends: 158 [2018-09-30 20:35:22,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-09-30 20:35:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-30 20:35:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-30 20:35:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-30 20:35:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-09-30 20:35:22,403 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-09-30 20:35:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:22,404 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-09-30 20:35:22,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 20:35:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-09-30 20:35:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-30 20:35:22,405 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:22,405 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-30 20:35:22,405 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:22,405 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:22,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-09-30 20:35:22,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:22,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:22,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:22,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:22,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:22,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:22,966 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 [2018-09-30 20:35:22,973 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:35:23,037 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 20:35:23,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:23,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:24,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:24,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-30 20:35:24,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 20:35:24,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 20:35:24,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:24,670 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-09-30 20:35:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:26,598 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-09-30 20:35:26,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 20:35:26,598 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-09-30 20:35:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:26,599 INFO L225 Difference]: With dead ends: 165 [2018-09-30 20:35:26,599 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 20:35:26,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-09-30 20:35:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 20:35:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-30 20:35:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 20:35:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-09-30 20:35:26,606 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-09-30 20:35:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:26,607 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-09-30 20:35:26,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 20:35:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-09-30 20:35:26,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 20:35:26,608 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:26,608 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-30 20:35:26,608 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:26,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-09-30 20:35:26,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:26,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:26,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:26,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:26,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:27,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:27,306 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 [2018-09-30 20:35:27,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:27,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:28,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:28,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-30 20:35:28,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 20:35:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 20:35:28,996 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:28,997 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-09-30 20:35:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:31,137 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-09-30 20:35:31,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 20:35:31,137 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-09-30 20:35:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:31,139 INFO L225 Difference]: With dead ends: 170 [2018-09-30 20:35:31,139 INFO L226 Difference]: Without dead ends: 168 [2018-09-30 20:35:31,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-09-30 20:35:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-30 20:35:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-30 20:35:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-30 20:35:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-09-30 20:35:31,146 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-09-30 20:35:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:31,146 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-09-30 20:35:31,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 20:35:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-09-30 20:35:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-30 20:35:31,147 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:31,147 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-30 20:35:31,148 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:31,148 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:31,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-09-30 20:35:31,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:31,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:31,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:31,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:35:31,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:33,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:33,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:35:33,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:35:33,283 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:35:33,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:33,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:35,407 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:35,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-30 20:35:35,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 20:35:35,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 20:35:35,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:35,409 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-09-30 20:35:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:37,395 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-09-30 20:35:37,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:35:37,395 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-09-30 20:35:37,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:37,396 INFO L225 Difference]: With dead ends: 175 [2018-09-30 20:35:37,396 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 20:35:37,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time [2018-09-30 20:35:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 20:35:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-30 20:35:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 20:35:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-09-30 20:35:37,402 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-09-30 20:35:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:37,403 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-09-30 20:35:37,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 20:35:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-09-30 20:35:37,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 20:35:37,404 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:37,404 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-30 20:35:37,404 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:37,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:37,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-09-30 20:35:37,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:37,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:37,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:37,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:37,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:39,026 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:39,026 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 [2018-09-30 20:35:39,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:35:39,090 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 20:35:39,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:39,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:40,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:40,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-30 20:35:40,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 20:35:40,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 20:35:40,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:40,866 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-09-30 20:35:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:42,515 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-09-30 20:35:42,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:35:42,515 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-09-30 20:35:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:42,517 INFO L225 Difference]: With dead ends: 180 [2018-09-30 20:35:42,517 INFO L226 Difference]: Without dead ends: 178 [2018-09-30 20:35:42,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-09-30 20:35:42,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-30 20:35:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-30 20:35:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-30 20:35:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-09-30 20:35:42,523 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-09-30 20:35:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:42,524 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-09-30 20:35:42,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 20:35:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-09-30 20:35:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 20:35:42,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:42,525 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-30 20:35:42,525 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:42,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:42,526 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-09-30 20:35:42,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:42,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:42,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:42,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:42,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:43,327 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:43,327 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 [2018-09-30 20:35:43,335 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:35:43,378 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:35:43,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:43,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:46,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:46,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-30 20:35:46,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 20:35:46,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 20:35:46,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:46,255 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-09-30 20:35:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:49,297 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-09-30 20:35:49,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:35:49,297 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-09-30 20:35:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:49,298 INFO L225 Difference]: With dead ends: 185 [2018-09-30 20:35:49,298 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 20:35:49,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-09-30 20:35:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 20:35:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-30 20:35:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 20:35:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-09-30 20:35:49,303 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-09-30 20:35:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:49,303 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-09-30 20:35:49,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 20:35:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-09-30 20:35:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 20:35:49,304 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:49,304 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-30 20:35:49,304 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:49,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-09-30 20:35:49,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:49,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:49,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:49,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:49,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:50,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:50,419 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 [2018-09-30 20:35:50,427 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:35:50,492 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 20:35:50,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:50,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:52,301 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:52,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-30 20:35:52,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 20:35:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 20:35:52,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:52,303 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-09-30 20:35:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:35:54,834 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-09-30 20:35:54,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 20:35:54,834 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-09-30 20:35:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:35:54,835 INFO L225 Difference]: With dead ends: 190 [2018-09-30 20:35:54,835 INFO L226 Difference]: Without dead ends: 188 [2018-09-30 20:35:54,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-09-30 20:35:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-30 20:35:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-30 20:35:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 20:35:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-09-30 20:35:54,841 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-09-30 20:35:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:35:54,842 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-09-30 20:35:54,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 20:35:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-09-30 20:35:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-30 20:35:54,843 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:35:54,843 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-30 20:35:54,843 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:35:54,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:35:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-09-30 20:35:54,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:35:54,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:35:54,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:54,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:35:54,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:35:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:35:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:55,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:35:55,848 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 [2018-09-30 20:35:55,856 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:35:55,915 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 20:35:55,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:35:55,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:35:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:35:58,438 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:35:58,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-30 20:35:58,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 20:35:58,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 20:35:58,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:35:58,440 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-09-30 20:36:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:01,181 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-09-30 20:36:01,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 20:36:01,182 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-09-30 20:36:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:01,183 INFO L225 Difference]: With dead ends: 195 [2018-09-30 20:36:01,183 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 20:36:01,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-09-30 20:36:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 20:36:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-30 20:36:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 20:36:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-09-30 20:36:01,189 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-09-30 20:36:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:01,190 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-09-30 20:36:01,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 20:36:01,190 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-09-30 20:36:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 20:36:01,191 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:01,191 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-30 20:36:01,191 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:01,191 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:01,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-09-30 20:36:01,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:01,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:01,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:01,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:01,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:02,501 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:02,501 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 [2018-09-30 20:36:02,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:02,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:04,682 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:04,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-09-30 20:36:04,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-09-30 20:36:04,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-09-30 20:36:04,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:04,684 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-09-30 20:36:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:06,763 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-09-30 20:36:06,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 20:36:06,764 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-09-30 20:36:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:06,765 INFO L225 Difference]: With dead ends: 200 [2018-09-30 20:36:06,765 INFO L226 Difference]: Without dead ends: 198 [2018-09-30 20:36:06,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-09-30 20:36:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-30 20:36:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-30 20:36:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-30 20:36:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-09-30 20:36:06,771 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-09-30 20:36:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:06,771 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-09-30 20:36:06,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-09-30 20:36:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-09-30 20:36:06,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-30 20:36:06,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:06,772 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-30 20:36:06,772 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:06,772 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-09-30 20:36:06,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:06,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:06,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:06,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:06,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:07,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:07,514 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 [2018-09-30 20:36:07,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:36:07,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:36:07,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:07,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:09,737 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:09,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-09-30 20:36:09,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-09-30 20:36:09,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-09-30 20:36:09,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:09,740 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-09-30 20:36:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:12,537 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-09-30 20:36:12,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 20:36:12,537 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-09-30 20:36:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:12,538 INFO L225 Difference]: With dead ends: 205 [2018-09-30 20:36:12,538 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 20:36:12,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-09-30 20:36:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 20:36:12,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-09-30 20:36:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 20:36:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-09-30 20:36:12,543 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-09-30 20:36:12,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:12,543 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-09-30 20:36:12,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-09-30 20:36:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-09-30 20:36:12,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 20:36:12,544 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:12,544 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-09-30 20:36:12,545 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:12,545 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:12,545 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-09-30 20:36:12,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:12,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:12,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:12,546 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:12,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:13,532 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:13,532 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:13,539 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:36:13,605 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 20:36:13,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:13,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:15,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:15,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-09-30 20:36:15,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-09-30 20:36:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-09-30 20:36:15,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:15,830 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-09-30 20:36:18,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:18,679 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-09-30 20:36:18,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 20:36:18,679 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-09-30 20:36:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:18,680 INFO L225 Difference]: With dead ends: 210 [2018-09-30 20:36:18,680 INFO L226 Difference]: Without dead ends: 208 [2018-09-30 20:36:18,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-09-30 20:36:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-30 20:36:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-09-30 20:36:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-30 20:36:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-09-30 20:36:18,685 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-09-30 20:36:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:18,685 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-09-30 20:36:18,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-09-30 20:36:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-09-30 20:36:18,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-30 20:36:18,686 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:18,686 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-09-30 20:36:18,686 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:18,686 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:18,686 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-09-30 20:36:18,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:18,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:18,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:18,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:18,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:20,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:20,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:20,201 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:36:20,247 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:36:20,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:20,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:22,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:22,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-09-30 20:36:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-09-30 20:36:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-09-30 20:36:22,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:22,345 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-09-30 20:36:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:25,372 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-09-30 20:36:25,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 20:36:25,372 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-09-30 20:36:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:25,373 INFO L225 Difference]: With dead ends: 215 [2018-09-30 20:36:25,373 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 20:36:25,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-09-30 20:36:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 20:36:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-09-30 20:36:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 20:36:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-09-30 20:36:25,378 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-09-30 20:36:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:25,378 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-09-30 20:36:25,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-09-30 20:36:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-09-30 20:36:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 20:36:25,379 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:25,379 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-09-30 20:36:25,379 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:25,379 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:25,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-09-30 20:36:25,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:25,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:25,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:25,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:25,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:26,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:26,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:26,187 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:36:26,260 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 20:36:26,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:26,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:31,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:31,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-09-30 20:36:31,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-09-30 20:36:31,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-09-30 20:36:31,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:31,165 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. [2018-09-30 20:36:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:34,140 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2018-09-30 20:36:34,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 20:36:34,140 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 208 [2018-09-30 20:36:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:34,141 INFO L225 Difference]: With dead ends: 220 [2018-09-30 20:36:34,141 INFO L226 Difference]: Without dead ends: 218 [2018-09-30 20:36:34,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time [2018-09-30 20:36:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-09-30 20:36:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-09-30 20:36:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-09-30 20:36:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2018-09-30 20:36:34,147 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 208 [2018-09-30 20:36:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:34,147 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2018-09-30 20:36:34,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-09-30 20:36:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2018-09-30 20:36:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-30 20:36:34,148 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:34,149 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-09-30 20:36:34,149 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:34,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:34,149 INFO L82 PathProgramCache]: Analyzing trace with hash -638782368, now seen corresponding path program 42 times [2018-09-30 20:36:34,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:34,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:34,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:34,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:34,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:35,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:35,123 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:35,130 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:36:35,200 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 20:36:35,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:35,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:37,542 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:37,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2018-09-30 20:36:37,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-09-30 20:36:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-09-30 20:36:37,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:37,545 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand 172 states. [2018-09-30 20:36:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:40,680 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2018-09-30 20:36:40,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 20:36:40,681 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 213 [2018-09-30 20:36:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:40,682 INFO L225 Difference]: With dead ends: 225 [2018-09-30 20:36:40,682 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 20:36:40,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-09-30 20:36:40,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 20:36:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-09-30 20:36:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 20:36:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2018-09-30 20:36:40,686 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 213 [2018-09-30 20:36:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:40,687 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2018-09-30 20:36:40,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-09-30 20:36:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2018-09-30 20:36:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 20:36:40,688 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:40,688 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-09-30 20:36:40,688 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:40,688 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:40,688 INFO L82 PathProgramCache]: Analyzing trace with hash 372754796, now seen corresponding path program 43 times [2018-09-30 20:36:40,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:40,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:40,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:40,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:40,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:41,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:41,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:41,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:41,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:43,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:43,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2018-09-30 20:36:43,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-09-30 20:36:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-09-30 20:36:43,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:43,985 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand 176 states. [2018-09-30 20:36:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:47,247 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2018-09-30 20:36:47,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 20:36:47,247 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 218 [2018-09-30 20:36:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:47,248 INFO L225 Difference]: With dead ends: 230 [2018-09-30 20:36:47,248 INFO L226 Difference]: Without dead ends: 228 [2018-09-30 20:36:47,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-09-30 20:36:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-30 20:36:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-09-30 20:36:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-09-30 20:36:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2018-09-30 20:36:47,253 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 218 [2018-09-30 20:36:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:47,254 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2018-09-30 20:36:47,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-09-30 20:36:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2018-09-30 20:36:47,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-30 20:36:47,255 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:47,255 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-09-30 20:36:47,255 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:47,255 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:47,255 INFO L82 PathProgramCache]: Analyzing trace with hash -2065417248, now seen corresponding path program 44 times [2018-09-30 20:36:47,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:47,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:47,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:47,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:36:47,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:48,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:48,090 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:48,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:36:48,152 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:36:48,153 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:48,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:50,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:50,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2018-09-30 20:36:50,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-09-30 20:36:50,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-09-30 20:36:50,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:50,710 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 180 states. [2018-09-30 20:36:54,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:36:54,015 INFO L93 Difference]: Finished difference Result 235 states and 281 transitions. [2018-09-30 20:36:54,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 20:36:54,015 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 223 [2018-09-30 20:36:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:36:54,016 INFO L225 Difference]: With dead ends: 235 [2018-09-30 20:36:54,016 INFO L226 Difference]: Without dead ends: 233 [2018-09-30 20:36:54,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-09-30 20:36:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-30 20:36:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-09-30 20:36:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 20:36:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2018-09-30 20:36:54,023 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 223 [2018-09-30 20:36:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:36:54,023 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2018-09-30 20:36:54,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-09-30 20:36:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2018-09-30 20:36:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-30 20:36:54,025 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:36:54,025 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-09-30 20:36:54,025 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:36:54,025 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:36:54,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1340001812, now seen corresponding path program 45 times [2018-09-30 20:36:54,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:36:54,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:36:54,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:54,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:36:54,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:36:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:36:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:54,829 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:36:54,829 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:36:54,837 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:36:54,915 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 20:36:54,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:36:54,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:36:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:36:57,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:36:57,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2018-09-30 20:36:57,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-09-30 20:36:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-09-30 20:36:57,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:36:57,499 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand 184 states. [2018-09-30 20:37:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:00,146 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-09-30 20:37:00,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 20:37:00,146 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 228 [2018-09-30 20:37:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:00,147 INFO L225 Difference]: With dead ends: 240 [2018-09-30 20:37:00,147 INFO L226 Difference]: Without dead ends: 238 [2018-09-30 20:37:00,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time [2018-09-30 20:37:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-09-30 20:37:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-09-30 20:37:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-09-30 20:37:00,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2018-09-30 20:37:00,155 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 228 [2018-09-30 20:37:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:00,155 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2018-09-30 20:37:00,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-09-30 20:37:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2018-09-30 20:37:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-09-30 20:37:00,156 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:00,157 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-09-30 20:37:00,157 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:00,157 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash 117973856, now seen corresponding path program 46 times [2018-09-30 20:37:00,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:00,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:00,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:00,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:01,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:01,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:01,298 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:37:01,369 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:37:01,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:01,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:04,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:04,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2018-09-30 20:37:04,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-09-30 20:37:04,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-09-30 20:37:04,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:04,300 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand 188 states. [2018-09-30 20:37:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:07,825 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2018-09-30 20:37:07,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 20:37:07,825 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 233 [2018-09-30 20:37:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:07,827 INFO L225 Difference]: With dead ends: 245 [2018-09-30 20:37:07,827 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 20:37:07,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-09-30 20:37:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 20:37:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-09-30 20:37:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 20:37:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2018-09-30 20:37:07,835 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 233 [2018-09-30 20:37:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:07,835 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2018-09-30 20:37:07,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-09-30 20:37:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2018-09-30 20:37:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 20:37:07,837 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:07,837 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-09-30 20:37:07,837 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:07,837 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash 365034092, now seen corresponding path program 47 times [2018-09-30 20:37:07,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:07,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:07,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:07,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:07,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:08,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:08,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:08,821 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:37:08,906 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 20:37:08,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:08,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:11,674 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:11,674 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2018-09-30 20:37:11,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-09-30 20:37:11,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-09-30 20:37:11,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:11,677 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand 192 states. [2018-09-30 20:37:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:14,786 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2018-09-30 20:37:14,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 20:37:14,786 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 238 [2018-09-30 20:37:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:14,788 INFO L225 Difference]: With dead ends: 250 [2018-09-30 20:37:14,788 INFO L226 Difference]: Without dead ends: 248 [2018-09-30 20:37:14,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-09-30 20:37:14,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-09-30 20:37:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-09-30 20:37:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-09-30 20:37:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2018-09-30 20:37:14,795 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 238 [2018-09-30 20:37:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:14,796 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2018-09-30 20:37:14,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-09-30 20:37:14,796 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2018-09-30 20:37:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-30 20:37:14,797 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:14,797 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-09-30 20:37:14,798 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:14,798 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:14,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1225829088, now seen corresponding path program 48 times [2018-09-30 20:37:14,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:14,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:14,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:14,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:14,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:15,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:15,691 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:15,698 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:37:15,786 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 20:37:15,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:15,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:18,566 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:18,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2018-09-30 20:37:18,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-09-30 20:37:18,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-09-30 20:37:18,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:18,569 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand 196 states. [2018-09-30 20:37:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:22,440 INFO L93 Difference]: Finished difference Result 255 states and 305 transitions. [2018-09-30 20:37:22,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 20:37:22,440 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 243 [2018-09-30 20:37:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:22,441 INFO L225 Difference]: With dead ends: 255 [2018-09-30 20:37:22,442 INFO L226 Difference]: Without dead ends: 253 [2018-09-30 20:37:22,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-09-30 20:37:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-30 20:37:22,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-09-30 20:37:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-30 20:37:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2018-09-30 20:37:22,448 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 243 [2018-09-30 20:37:22,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:22,448 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2018-09-30 20:37:22,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-09-30 20:37:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2018-09-30 20:37:22,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-30 20:37:22,450 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:22,450 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-09-30 20:37:22,450 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:22,451 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:22,451 INFO L82 PathProgramCache]: Analyzing trace with hash 291644140, now seen corresponding path program 49 times [2018-09-30 20:37:22,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:22,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:22,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:22,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:22,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:23,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:23,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:23,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:37:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:23,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:26,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:26,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2018-09-30 20:37:26,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-09-30 20:37:26,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-09-30 20:37:26,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:26,197 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand 200 states. [2018-09-30 20:37:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:30,442 INFO L93 Difference]: Finished difference Result 260 states and 311 transitions. [2018-09-30 20:37:30,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 20:37:30,443 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 248 [2018-09-30 20:37:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:30,444 INFO L225 Difference]: With dead ends: 260 [2018-09-30 20:37:30,444 INFO L226 Difference]: Without dead ends: 258 [2018-09-30 20:37:30,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-09-30 20:37:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-09-30 20:37:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-09-30 20:37:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-09-30 20:37:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 304 transitions. [2018-09-30 20:37:30,450 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 304 transitions. Word has length 248 [2018-09-30 20:37:30,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:30,450 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 304 transitions. [2018-09-30 20:37:30,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-09-30 20:37:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 304 transitions. [2018-09-30 20:37:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-30 20:37:30,452 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:30,452 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-09-30 20:37:30,452 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:30,452 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1380593056, now seen corresponding path program 50 times [2018-09-30 20:37:30,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:30,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:30,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:30,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:37:30,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:31,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:31,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:31,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:37:31,738 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:37:31,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:31,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:34,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:34,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 203 [2018-09-30 20:37:34,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-09-30 20:37:34,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-09-30 20:37:34,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:34,574 INFO L87 Difference]: Start difference. First operand 254 states and 304 transitions. Second operand 204 states. [2018-09-30 20:37:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:38,794 INFO L93 Difference]: Finished difference Result 265 states and 317 transitions. [2018-09-30 20:37:38,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 20:37:38,794 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 253 [2018-09-30 20:37:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:38,795 INFO L225 Difference]: With dead ends: 265 [2018-09-30 20:37:38,796 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 20:37:38,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-09-30 20:37:38,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 20:37:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-09-30 20:37:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 20:37:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2018-09-30 20:37:38,803 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 253 [2018-09-30 20:37:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:38,803 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2018-09-30 20:37:38,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-09-30 20:37:38,803 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2018-09-30 20:37:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 20:37:38,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:38,805 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-09-30 20:37:38,805 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:38,805 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:38,805 INFO L82 PathProgramCache]: Analyzing trace with hash 860466028, now seen corresponding path program 51 times [2018-09-30 20:37:38,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:38,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:38,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:38,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:38,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:39,784 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:39,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:39,794 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:37:39,901 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 20:37:39,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:39,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:42,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:42,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 207 [2018-09-30 20:37:42,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-09-30 20:37:42,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-09-30 20:37:42,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:42,897 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand 208 states. [2018-09-30 20:37:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:46,681 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2018-09-30 20:37:46,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 20:37:46,682 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 258 [2018-09-30 20:37:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:46,683 INFO L225 Difference]: With dead ends: 270 [2018-09-30 20:37:46,683 INFO L226 Difference]: Without dead ends: 268 [2018-09-30 20:37:46,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-09-30 20:37:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-09-30 20:37:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-09-30 20:37:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-09-30 20:37:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 316 transitions. [2018-09-30 20:37:46,688 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 316 transitions. Word has length 258 [2018-09-30 20:37:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:46,688 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 316 transitions. [2018-09-30 20:37:46,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-09-30 20:37:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 316 transitions. [2018-09-30 20:37:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-09-30 20:37:46,690 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:46,690 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-09-30 20:37:46,690 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:46,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:46,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1850762784, now seen corresponding path program 52 times [2018-09-30 20:37:46,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:46,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:46,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:46,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:46,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:47,704 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:47,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:47,711 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:37:47,768 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:37:47,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:47,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:50,712 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:50,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 211 [2018-09-30 20:37:50,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-09-30 20:37:50,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-09-30 20:37:50,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:50,715 INFO L87 Difference]: Start difference. First operand 264 states and 316 transitions. Second operand 212 states. [2018-09-30 20:37:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:37:55,462 INFO L93 Difference]: Finished difference Result 275 states and 329 transitions. [2018-09-30 20:37:55,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 20:37:55,462 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 263 [2018-09-30 20:37:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:37:55,463 INFO L225 Difference]: With dead ends: 275 [2018-09-30 20:37:55,463 INFO L226 Difference]: Without dead ends: 273 [2018-09-30 20:37:55,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-09-30 20:37:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-09-30 20:37:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-09-30 20:37:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-30 20:37:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 322 transitions. [2018-09-30 20:37:55,469 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 322 transitions. Word has length 263 [2018-09-30 20:37:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:37:55,469 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 322 transitions. [2018-09-30 20:37:55,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-09-30 20:37:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 322 transitions. [2018-09-30 20:37:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-30 20:37:55,470 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:37:55,470 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-09-30 20:37:55,471 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:37:55,471 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:37:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1371575276, now seen corresponding path program 53 times [2018-09-30 20:37:55,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:37:55,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:37:55,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:55,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:37:55,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:37:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:37:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:56,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:37:56,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:37:56,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:37:56,556 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 20:37:56,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:37:56,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:37:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:37:59,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:37:59,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 215 [2018-09-30 20:37:59,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-09-30 20:37:59,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-09-30 20:37:59,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:37:59,719 INFO L87 Difference]: Start difference. First operand 269 states and 322 transitions. Second operand 216 states. [2018-09-30 20:38:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:04,287 INFO L93 Difference]: Finished difference Result 280 states and 335 transitions. [2018-09-30 20:38:04,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 20:38:04,287 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 268 [2018-09-30 20:38:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:04,289 INFO L225 Difference]: With dead ends: 280 [2018-09-30 20:38:04,289 INFO L226 Difference]: Without dead ends: 278 [2018-09-30 20:38:04,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-09-30 20:38:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-09-30 20:38:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-09-30 20:38:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-09-30 20:38:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 328 transitions. [2018-09-30 20:38:04,294 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 328 transitions. Word has length 268 [2018-09-30 20:38:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:04,294 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 328 transitions. [2018-09-30 20:38:04,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-09-30 20:38:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 328 transitions. [2018-09-30 20:38:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-30 20:38:04,295 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:04,295 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-09-30 20:38:04,296 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:04,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:04,296 INFO L82 PathProgramCache]: Analyzing trace with hash -877264544, now seen corresponding path program 54 times [2018-09-30 20:38:04,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:04,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:04,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:04,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:04,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:05,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:05,331 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:38:05,339 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:05,449 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 20:38:05,449 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:05,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:08,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:08,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 219 [2018-09-30 20:38:08,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-09-30 20:38:08,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-09-30 20:38:08,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:08,566 INFO L87 Difference]: Start difference. First operand 274 states and 328 transitions. Second operand 220 states. Received shutdown request... [2018-09-30 20:38:09,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:38:09,918 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:38:09,923 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:38:09,923 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:38:09 BoogieIcfgContainer [2018-09-30 20:38:09,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:38:09,924 INFO L168 Benchmark]: Toolchain (without parser) took 242264.93 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -214.4 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 211.0 MB). Peak memory consumption was 378.6 MB. Max. memory is 7.1 GB. [2018-09-30 20:38:09,926 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-09-30 20:38:09,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.45 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. [2018-09-30 20:38:09,927 INFO L168 Benchmark]: Boogie Preprocessor took 23.52 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. [2018-09-30 20:38:09,927 INFO L168 Benchmark]: RCFGBuilder took 412.58 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. [2018-09-30 20:38:09,928 INFO L168 Benchmark]: TraceAbstraction took 241778.67 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -214.4 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 189.8 MB). Peak memory consumption was 357.5 MB. Max. memory is 7.1 GB. [2018-09-30 20:38:09,934 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 0.22 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 43.45 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 23.52 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 412.58 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 241778.67 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -214.4 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 189.8 MB). Peak memory consumption was 357.5 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 (274states) and FLOYD_HOARE automaton (currently 21 states, 220 states before enhancement), while ReachableStatesComputation was computing reachable states (48 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 241.7s OverallTime, 56 OverallIterations, 54 TraceHistogramMax, 106.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 563 SDtfs, 20020 SDslu, 17677 SDs, 0 SdLazy, 17855 SolverSat, 3689 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10615 GetRequests, 4565 SyntacticMatches, 0 SemanticMatches, 6050 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 55 MinimizatonAttempts, 217 StatesRemovedByMinimization, 54 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 127.7s InterpolantComputationTime, 15185 NumberOfCodeBlocks, 15185 NumberOfCodeBlocksAsserted, 902 NumberOfCheckSat, 15075 ConstructedInterpolants, 7479 QuantifiedInterpolants, 27160009 SizeOfPredicates, 1647 NumberOfNonLiveVariables, 12744 ConjunctsInSsa, 3186 ConjunctsInUnsatCore, 110 InterpolantComputations, 2 PerfectInterpolantSequences, 1/265321 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-0-2018-09-30_20-38-09-950.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-0-2018-09-30_20-38-09-950.csv Completed graceful shutdown