java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/real-life/RailwayCrossing.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:02:55,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:02:55,484 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:02:55,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-03 09:02:55,529 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-03 09:02:55,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:02:55,544 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:02:55,545 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:02:55,545 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:02:55,546 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:02:55,546 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:02:55,546 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:02:55,546 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:02:55,547 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:02:55,547 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:02:55,547 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:02:55,547 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:02:55,547 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:02:55,547 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:02:55,548 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:02:55,548 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:02:55,548 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:02:55,548 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:02:55,548 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:02:55,549 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:02:55,549 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:02:55,549 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:02:55,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:02:55,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:02:55,550 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:02:55,550 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:02:55,550 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:02:55,550 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:02:55,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:02:55,551 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:02:55,551 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:02:55,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:02:55,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:02:55,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:02:55,621 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:02:55,621 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:02:55,622 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl [2018-10-03 09:02:55,623 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/RailwayCrossing.bpl' [2018-10-03 09:02:55,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:02:55,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:02:55,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:02:55,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:02:55,681 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:02:55,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,727 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-03 09:02:55,728 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-03 09:02:55,728 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-03 09:02:55,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:02:55,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:02:55,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:02:55,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:02:55,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... [2018-10-03 09:02:55,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:02:55,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:02:55,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:02:55,756 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:02:55,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:02:55,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-10-03 09:02:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-10-03 09:02:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-10-03 09:02:56,156 INFO L337 CfgBuilder]: Using library mode [2018-10-03 09:02:56,157 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:02:56 BoogieIcfgContainer [2018-10-03 09:02:56,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:02:56,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:02:56,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:02:56,166 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:02:56,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:02:55" (1/2) ... [2018-10-03 09:02:56,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fe5451 and model type RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:02:56, skipping insertion in model container [2018-10-03 09:02:56,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:02:56" (2/2) ... [2018-10-03 09:02:56,170 INFO L112 eAbstractionObserver]: Analyzing ICFG RailwayCrossing.bpl [2018-10-03 09:02:56,182 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:02:56,196 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:02:56,257 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:02:56,258 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:02:56,260 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:02:56,261 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:02:56,261 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:02:56,261 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:02:56,263 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:02:56,264 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:02:56,264 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:02:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-03 09:02:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-03 09:02:56,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:56,302 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-03 09:02:56,303 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:56,314 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash 30496, now seen corresponding path program 1 times [2018-10-03 09:02:56,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:56,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:56,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:56,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:02:56,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:56,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:02:56,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:02:56,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:02:56,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:02:56,562 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:02:56,565 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-03 09:02:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:02:56,676 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2018-10-03 09:02:56,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:02:56,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-03 09:02:56,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:02:56,699 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:02:56,700 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:02:56,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:02:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:02:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-10-03 09:02:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:02:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2018-10-03 09:02:56,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 12 transitions. Word has length 3 [2018-10-03 09:02:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:02:56,735 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-10-03 09:02:56,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:02:56,736 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 12 transitions. [2018-10-03 09:02:56,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:02:56,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:56,736 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:02:56,737 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:56,737 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1863215691, now seen corresponding path program 1 times [2018-10-03 09:02:56,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:56,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:56,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:56,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:02:56,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:56,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:02:56,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:02:56,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:02:56,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:02:56,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:02:56,778 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand 3 states. [2018-10-03 09:02:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:02:56,789 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2018-10-03 09:02:56,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:02:56,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-03 09:02:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:02:56,792 INFO L225 Difference]: With dead ends: 16 [2018-10-03 09:02:56,793 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:02:56,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:02:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:02:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:02:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:02:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-03 09:02:56,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2018-10-03 09:02:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:02:56,808 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-03 09:02:56,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:02:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-10-03 09:02:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:02:56,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:56,809 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 09:02:56,809 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:56,811 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1926837521, now seen corresponding path program 1 times [2018-10-03 09:02:56,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:56,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:56,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:56,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:02:56,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:56,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:02:56,915 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:02:56,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:02:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:56,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:02:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:57,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:02:57,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-10-03 09:02:57,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:02:57,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:02:57,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:02:57,161 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 6 states. [2018-10-03 09:02:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:02:57,218 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2018-10-03 09:02:57,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:02:57,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-03 09:02:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:02:57,221 INFO L225 Difference]: With dead ends: 20 [2018-10-03 09:02:57,221 INFO L226 Difference]: Without dead ends: 18 [2018-10-03 09:02:57,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 4 [2018-10-03 09:02:57,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-03 09:02:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-10-03 09:02:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 09:02:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-10-03 09:02:57,226 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-10-03 09:02:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:02:57,227 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-10-03 09:02:57,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:02:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-10-03 09:02:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 09:02:57,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:57,228 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-10-03 09:02:57,228 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:57,228 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:57,229 INFO L82 PathProgramCache]: Analyzing trace with hash 640583104, now seen corresponding path program 2 times [2018-10-03 09:02:57,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:57,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:57,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:57,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:02:57,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:57,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:02:57,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:02:57,359 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:02:57,402 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:02:57,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:02:57,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:02:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:57,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:02:57,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-03 09:02:57,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:02:57,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:02:57,901 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:02:57,901 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 8 states. [2018-10-03 09:02:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:02:57,959 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2018-10-03 09:02:57,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:02:57,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-10-03 09:02:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:02:57,961 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:02:57,961 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:02:57,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 5 [2018-10-03 09:02:57,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:02:57,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-10-03 09:02:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:02:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-10-03 09:02:57,967 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 13 [2018-10-03 09:02:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:02:57,968 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-10-03 09:02:57,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:02:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2018-10-03 09:02:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:02:57,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:57,969 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-10-03 09:02:57,969 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:57,970 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:57,970 INFO L82 PathProgramCache]: Analyzing trace with hash -297055631, now seen corresponding path program 3 times [2018-10-03 09:02:57,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:57,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:57,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:57,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:02:57,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:58,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:02:58,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:02:58,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:02:58,086 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-03 09:02:58,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:02:58,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:02:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:58,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:02:58,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-10-03 09:02:58,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:02:58,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:02:58,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:02:58,492 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 10 states. [2018-10-03 09:02:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:02:58,607 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2018-10-03 09:02:58,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:02:58,609 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-03 09:02:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:02:58,610 INFO L225 Difference]: With dead ends: 30 [2018-10-03 09:02:58,610 INFO L226 Difference]: Without dead ends: 28 [2018-10-03 09:02:58,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 6 [2018-10-03 09:02:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-03 09:02:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-10-03 09:02:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-03 09:02:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2018-10-03 09:02:58,616 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 18 [2018-10-03 09:02:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:02:58,616 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2018-10-03 09:02:58,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:02:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2018-10-03 09:02:58,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 09:02:58,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:58,617 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-10-03 09:02:58,618 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:58,618 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2073218144, now seen corresponding path program 4 times [2018-10-03 09:02:58,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:58,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:58,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:58,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:02:58,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:58,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:02:58,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:02:58,803 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:02:58,815 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:02:58,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:02:58,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:02:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:59,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:02:59,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-03 09:02:59,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:02:59,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:02:59,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:02:59,257 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand 12 states. [2018-10-03 09:02:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:02:59,562 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2018-10-03 09:02:59,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:02:59,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2018-10-03 09:02:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:02:59,564 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:02:59,564 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:02:59,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 7 [2018-10-03 09:02:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:02:59,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-10-03 09:02:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:02:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2018-10-03 09:02:59,574 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 23 [2018-10-03 09:02:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:02:59,576 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2018-10-03 09:02:59,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:02:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2018-10-03 09:02:59,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:02:59,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:02:59,580 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-10-03 09:02:59,581 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:02:59,581 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:02:59,581 INFO L82 PathProgramCache]: Analyzing trace with hash -609605679, now seen corresponding path program 5 times [2018-10-03 09:02:59,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:02:59,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:02:59,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:59,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:02:59,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:02:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:02:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:02:59,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:02:59,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:02:59,839 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:02:59,864 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-03 09:02:59,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:02:59,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:00,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:00,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-10-03 09:03:00,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:03:00,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:03:00,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:00,479 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand 14 states. [2018-10-03 09:03:00,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:00,691 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2018-10-03 09:03:00,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:03:00,692 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-10-03 09:03:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:00,693 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:03:00,693 INFO L226 Difference]: Without dead ends: 38 [2018-10-03 09:03:00,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 8 [2018-10-03 09:03:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-03 09:03:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-10-03 09:03:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-03 09:03:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2018-10-03 09:03:00,704 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 46 transitions. Word has length 28 [2018-10-03 09:03:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:00,704 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 46 transitions. [2018-10-03 09:03:00,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:03:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2018-10-03 09:03:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 09:03:00,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:00,705 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-10-03 09:03:00,706 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:00,706 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash -70825216, now seen corresponding path program 6 times [2018-10-03 09:03:00,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:00,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:00,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:00,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:00,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:00,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:00,843 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:00,853 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:00,876 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:03:00,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:00,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:01,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:01,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-03 09:03:01,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:03:01,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:03:01,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:01,357 INFO L87 Difference]: Start difference. First operand 34 states and 46 transitions. Second operand 16 states. [2018-10-03 09:03:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:01,458 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2018-10-03 09:03:01,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:03:01,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-10-03 09:03:01,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:01,460 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:03:01,460 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:03:01,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 9 [2018-10-03 09:03:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:03:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-03 09:03:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:03:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2018-10-03 09:03:01,468 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 33 [2018-10-03 09:03:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:01,468 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2018-10-03 09:03:01,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:03:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2018-10-03 09:03:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:03:01,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:01,470 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-10-03 09:03:01,470 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:01,470 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:01,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1872481585, now seen corresponding path program 7 times [2018-10-03 09:03:01,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:01,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:01,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:01,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:01,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:01,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:01,657 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:01,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:01,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:02,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:02,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-10-03 09:03:02,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:03:02,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:03:02,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:02,136 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand 18 states. [2018-10-03 09:03:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:02,241 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2018-10-03 09:03:02,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:03:02,242 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-10-03 09:03:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:02,243 INFO L225 Difference]: With dead ends: 50 [2018-10-03 09:03:02,244 INFO L226 Difference]: Without dead ends: 48 [2018-10-03 09:03:02,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 10 [2018-10-03 09:03:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-03 09:03:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-03 09:03:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-03 09:03:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-10-03 09:03:02,250 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 38 [2018-10-03 09:03:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:02,251 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-10-03 09:03:02,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:03:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-10-03 09:03:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 09:03:02,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:02,252 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-10-03 09:03:02,253 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:02,253 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1776681376, now seen corresponding path program 8 times [2018-10-03 09:03:02,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:02,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:02,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:02,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:02,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:02,606 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:02,618 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:02,643 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:02,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:02,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:03,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:03,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-03 09:03:03,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:03:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:03:03,167 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:03,167 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 20 states. [2018-10-03 09:03:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:03,251 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2018-10-03 09:03:03,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:03:03,252 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2018-10-03 09:03:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:03,253 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:03:03,253 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:03:03,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 11 [2018-10-03 09:03:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:03:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-03 09:03:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:03:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2018-10-03 09:03:03,261 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 43 [2018-10-03 09:03:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:03,262 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2018-10-03 09:03:03,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:03:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2018-10-03 09:03:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:03:03,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:03,263 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-10-03 09:03:03,264 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:03,264 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash -951698799, now seen corresponding path program 9 times [2018-10-03 09:03:03,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:03,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:03,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:03,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:03,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:03,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:03,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:03,454 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:03,486 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-03 09:03:03,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:03,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:05,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:05,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-10-03 09:03:05,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:03:05,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:03:05,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:05,087 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand 22 states. [2018-10-03 09:03:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:05,249 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2018-10-03 09:03:05,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:03:05,249 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2018-10-03 09:03:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:05,250 INFO L225 Difference]: With dead ends: 60 [2018-10-03 09:03:05,251 INFO L226 Difference]: Without dead ends: 58 [2018-10-03 09:03:05,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.7s impTime 12 [2018-10-03 09:03:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-03 09:03:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-10-03 09:03:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-03 09:03:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2018-10-03 09:03:05,258 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 48 [2018-10-03 09:03:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:05,258 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2018-10-03 09:03:05,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:03:05,258 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2018-10-03 09:03:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 09:03:05,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:05,260 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-10-03 09:03:05,260 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:05,260 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:05,260 INFO L82 PathProgramCache]: Analyzing trace with hash -259461056, now seen corresponding path program 10 times [2018-10-03 09:03:05,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:05,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:05,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:05,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:05,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:05,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:05,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:05,496 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:05,541 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:05,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:05,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:06,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:06,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-10-03 09:03:06,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:03:06,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:03:06,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:06,200 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 24 states. [2018-10-03 09:03:06,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:06,331 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2018-10-03 09:03:06,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:03:06,332 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 53 [2018-10-03 09:03:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:06,333 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:03:06,333 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:03:06,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 13 [2018-10-03 09:03:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:03:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-10-03 09:03:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:03:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2018-10-03 09:03:06,343 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 53 [2018-10-03 09:03:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:06,344 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2018-10-03 09:03:06,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:03:06,344 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2018-10-03 09:03:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:03:06,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:06,345 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-10-03 09:03:06,345 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:06,345 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:06,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1213165553, now seen corresponding path program 11 times [2018-10-03 09:03:06,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:06,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:06,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:06,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:06,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:06,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:06,575 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:06,583 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:06,605 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-03 09:03:06,605 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:06,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:07,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:07,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2018-10-03 09:03:07,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:03:07,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:03:07,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:07,551 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand 26 states. [2018-10-03 09:03:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:07,665 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2018-10-03 09:03:07,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:03:07,666 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2018-10-03 09:03:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:07,667 INFO L225 Difference]: With dead ends: 70 [2018-10-03 09:03:07,667 INFO L226 Difference]: Without dead ends: 68 [2018-10-03 09:03:07,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.4s impTime 14 [2018-10-03 09:03:07,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-03 09:03:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-10-03 09:03:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-03 09:03:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2018-10-03 09:03:07,673 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 58 [2018-10-03 09:03:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:07,673 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2018-10-03 09:03:07,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:03:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2018-10-03 09:03:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 09:03:07,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:07,675 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-10-03 09:03:07,675 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:07,675 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:07,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1043720480, now seen corresponding path program 12 times [2018-10-03 09:03:07,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:07,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:07,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:07,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:07,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:08,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:08,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:08,042 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:08,109 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:03:08,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:08,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:08,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:08,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-10-03 09:03:08,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:03:08,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:03:08,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:08,531 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 28 states. [2018-10-03 09:03:08,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:08,648 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-10-03 09:03:08,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:03:08,649 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 63 [2018-10-03 09:03:08,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:08,650 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:03:08,651 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:03:08,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 15 [2018-10-03 09:03:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:03:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-10-03 09:03:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:03:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2018-10-03 09:03:08,658 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 63 [2018-10-03 09:03:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:08,658 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2018-10-03 09:03:08,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:03:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2018-10-03 09:03:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:03:08,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:08,660 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-10-03 09:03:08,660 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:08,661 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash 14511441, now seen corresponding path program 13 times [2018-10-03 09:03:08,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:08,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:08,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:08,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:08,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:09,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:09,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:09,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:09,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:09,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:09,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2018-10-03 09:03:09,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:03:09,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:03:09,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:09,569 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand 30 states. [2018-10-03 09:03:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:09,667 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2018-10-03 09:03:09,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:03:09,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 68 [2018-10-03 09:03:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:09,669 INFO L225 Difference]: With dead ends: 80 [2018-10-03 09:03:09,669 INFO L226 Difference]: Without dead ends: 78 [2018-10-03 09:03:09,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 16 [2018-10-03 09:03:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-03 09:03:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-10-03 09:03:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-03 09:03:09,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2018-10-03 09:03:09,682 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 68 [2018-10-03 09:03:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:09,683 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2018-10-03 09:03:09,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:03:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2018-10-03 09:03:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 09:03:09,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:09,684 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-10-03 09:03:09,685 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:09,685 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:09,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1220315776, now seen corresponding path program 14 times [2018-10-03 09:03:09,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:09,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:09,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:09,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:09,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:09,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:09,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:09,942 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:09,986 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:09,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:09,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:10,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:10,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-10-03 09:03:10,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:03:10,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:03:10,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:10,564 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 32 states. [2018-10-03 09:03:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:10,702 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2018-10-03 09:03:10,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:03:10,702 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2018-10-03 09:03:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:10,704 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:03:10,704 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:03:10,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 17 [2018-10-03 09:03:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:03:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-10-03 09:03:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:03:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 109 transitions. [2018-10-03 09:03:10,711 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 109 transitions. Word has length 73 [2018-10-03 09:03:10,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:10,711 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 109 transitions. [2018-10-03 09:03:10,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:03:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 109 transitions. [2018-10-03 09:03:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:03:10,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:10,713 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-10-03 09:03:10,713 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:10,713 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:10,713 INFO L82 PathProgramCache]: Analyzing trace with hash 127283889, now seen corresponding path program 15 times [2018-10-03 09:03:10,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:10,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:10,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:10,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:10,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:11,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:11,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:11,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:11,949 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-03 09:03:11,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:11,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:12,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:12,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2018-10-03 09:03:12,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:03:12,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:03:12,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:12,409 INFO L87 Difference]: Start difference. First operand 79 states and 109 transitions. Second operand 34 states. [2018-10-03 09:03:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:12,509 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2018-10-03 09:03:12,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:03:12,509 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-10-03 09:03:12,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:12,510 INFO L225 Difference]: With dead ends: 90 [2018-10-03 09:03:12,510 INFO L226 Difference]: Without dead ends: 88 [2018-10-03 09:03:12,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 18 [2018-10-03 09:03:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-03 09:03:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-10-03 09:03:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-03 09:03:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2018-10-03 09:03:12,515 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 78 [2018-10-03 09:03:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:12,515 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2018-10-03 09:03:12,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:03:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2018-10-03 09:03:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 09:03:12,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:12,516 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-10-03 09:03:12,516 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:12,516 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:12,516 INFO L82 PathProgramCache]: Analyzing trace with hash -233894880, now seen corresponding path program 16 times [2018-10-03 09:03:12,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:12,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:12,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:12,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:12,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:12,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:12,949 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:12,957 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:12,976 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:12,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:12,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:13,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:13,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-10-03 09:03:13,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:03:13,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:03:13,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:13,595 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand 36 states. [2018-10-03 09:03:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:13,882 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2018-10-03 09:03:13,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:03:13,883 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2018-10-03 09:03:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:13,883 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:03:13,884 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:03:13,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 19 [2018-10-03 09:03:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:03:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-10-03 09:03:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:03:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2018-10-03 09:03:13,888 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 83 [2018-10-03 09:03:13,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:13,888 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2018-10-03 09:03:13,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:03:13,888 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2018-10-03 09:03:13,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:03:13,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:13,889 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-10-03 09:03:13,889 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:13,890 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:13,890 INFO L82 PathProgramCache]: Analyzing trace with hash -610287599, now seen corresponding path program 17 times [2018-10-03 09:03:13,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:13,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:13,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:13,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:14,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:14,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:14,199 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:14,233 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-03 09:03:14,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:14,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:14,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:14,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2018-10-03 09:03:14,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:03:14,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:03:14,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:14,955 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand 38 states. [2018-10-03 09:03:15,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:15,076 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2018-10-03 09:03:15,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:03:15,079 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 88 [2018-10-03 09:03:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:15,080 INFO L225 Difference]: With dead ends: 100 [2018-10-03 09:03:15,080 INFO L226 Difference]: Without dead ends: 98 [2018-10-03 09:03:15,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.3s impTime 20 [2018-10-03 09:03:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-03 09:03:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-10-03 09:03:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-03 09:03:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2018-10-03 09:03:15,085 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 88 [2018-10-03 09:03:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:15,085 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2018-10-03 09:03:15,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:03:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2018-10-03 09:03:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 09:03:15,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:15,086 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-10-03 09:03:15,086 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:15,086 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:15,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2059852480, now seen corresponding path program 18 times [2018-10-03 09:03:15,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:15,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:15,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:15,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:15,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:15,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:15,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:15,427 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:15,465 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:03:15,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:15,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:16,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:16,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-10-03 09:03:16,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:03:16,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:03:16,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:16,145 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand 40 states. [2018-10-03 09:03:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:16,288 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2018-10-03 09:03:16,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:03:16,289 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2018-10-03 09:03:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:16,290 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:03:16,290 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:03:16,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 21 [2018-10-03 09:03:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:03:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-10-03 09:03:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:03:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2018-10-03 09:03:16,295 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 93 [2018-10-03 09:03:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:16,295 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2018-10-03 09:03:16,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:03:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2018-10-03 09:03:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:03:16,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:16,296 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-10-03 09:03:16,297 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:16,297 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:16,297 INFO L82 PathProgramCache]: Analyzing trace with hash -996141711, now seen corresponding path program 19 times [2018-10-03 09:03:16,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:16,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:16,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:16,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:16,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:16,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:16,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:16,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:16,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:17,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:17,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2018-10-03 09:03:17,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:03:17,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:03:17,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:17,410 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand 42 states. [2018-10-03 09:03:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:17,577 INFO L93 Difference]: Finished difference Result 110 states and 152 transitions. [2018-10-03 09:03:17,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:03:17,578 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 98 [2018-10-03 09:03:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:17,579 INFO L225 Difference]: With dead ends: 110 [2018-10-03 09:03:17,579 INFO L226 Difference]: Without dead ends: 108 [2018-10-03 09:03:17,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 22 [2018-10-03 09:03:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-03 09:03:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-10-03 09:03:17,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-03 09:03:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2018-10-03 09:03:17,586 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 98 [2018-10-03 09:03:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:17,586 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2018-10-03 09:03:17,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:03:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2018-10-03 09:03:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 09:03:17,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:17,587 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-10-03 09:03:17,587 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:17,588 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:17,588 INFO L82 PathProgramCache]: Analyzing trace with hash -511385248, now seen corresponding path program 20 times [2018-10-03 09:03:17,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:17,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:17,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:17,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:17,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:18,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:18,282 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:18,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:18,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:18,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:18,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:20,653 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:20,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:20,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-10-03 09:03:20,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:03:20,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:03:20,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:20,675 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand 44 states. [2018-10-03 09:03:20,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:20,862 INFO L93 Difference]: Finished difference Result 115 states and 159 transitions. [2018-10-03 09:03:20,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:03:20,865 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 103 [2018-10-03 09:03:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:20,866 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:03:20,866 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:03:20,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.4s impTime 23 [2018-10-03 09:03:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:03:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-10-03 09:03:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:03:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 151 transitions. [2018-10-03 09:03:20,872 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 151 transitions. Word has length 103 [2018-10-03 09:03:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:20,872 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 151 transitions. [2018-10-03 09:03:20,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:03:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 151 transitions. [2018-10-03 09:03:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:03:20,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:20,873 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-10-03 09:03:20,874 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:20,874 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:20,874 INFO L82 PathProgramCache]: Analyzing trace with hash 851260113, now seen corresponding path program 21 times [2018-10-03 09:03:20,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:20,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:20,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:20,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:20,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:21,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:21,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:21,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:21,312 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-03 09:03:21,312 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:21,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:22,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:22,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2018-10-03 09:03:22,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:03:22,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:03:22,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:22,891 INFO L87 Difference]: Start difference. First operand 109 states and 151 transitions. Second operand 46 states. [2018-10-03 09:03:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:23,204 INFO L93 Difference]: Finished difference Result 120 states and 166 transitions. [2018-10-03 09:03:23,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:03:23,204 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 108 [2018-10-03 09:03:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:23,205 INFO L225 Difference]: With dead ends: 120 [2018-10-03 09:03:23,205 INFO L226 Difference]: Without dead ends: 118 [2018-10-03 09:03:23,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 0.9s impTime 24 [2018-10-03 09:03:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-03 09:03:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-10-03 09:03:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-03 09:03:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2018-10-03 09:03:23,212 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 158 transitions. Word has length 108 [2018-10-03 09:03:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:23,212 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 158 transitions. [2018-10-03 09:03:23,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:03:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 158 transitions. [2018-10-03 09:03:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-03 09:03:23,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:23,214 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-10-03 09:03:23,214 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:23,214 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash -572317696, now seen corresponding path program 22 times [2018-10-03 09:03:23,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:23,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:23,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:23,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:23,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:23,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:23,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:23,747 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:23,779 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:23,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:23,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:24,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:24,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-10-03 09:03:24,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:03:24,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:03:24,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:24,444 INFO L87 Difference]: Start difference. First operand 114 states and 158 transitions. Second operand 48 states. [2018-10-03 09:03:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:24,623 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2018-10-03 09:03:24,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:03:24,624 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 113 [2018-10-03 09:03:24,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:24,624 INFO L225 Difference]: With dead ends: 125 [2018-10-03 09:03:24,624 INFO L226 Difference]: Without dead ends: 123 [2018-10-03 09:03:24,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 25 [2018-10-03 09:03:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-03 09:03:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-10-03 09:03:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 09:03:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2018-10-03 09:03:24,630 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 113 [2018-10-03 09:03:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:24,630 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2018-10-03 09:03:24,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:03:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2018-10-03 09:03:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:03:24,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:24,631 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-10-03 09:03:24,631 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:24,631 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 513611825, now seen corresponding path program 23 times [2018-10-03 09:03:24,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:24,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:24,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:24,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:24,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:25,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:25,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:25,397 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:25,442 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-03 09:03:25,442 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:25,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:26,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:26,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2018-10-03 09:03:26,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:03:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:03:26,158 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:26,158 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 50 states. [2018-10-03 09:03:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:26,339 INFO L93 Difference]: Finished difference Result 130 states and 180 transitions. [2018-10-03 09:03:26,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:03:26,339 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 118 [2018-10-03 09:03:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:26,340 INFO L225 Difference]: With dead ends: 130 [2018-10-03 09:03:26,340 INFO L226 Difference]: Without dead ends: 128 [2018-10-03 09:03:26,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 26 [2018-10-03 09:03:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-03 09:03:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-10-03 09:03:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-03 09:03:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 172 transitions. [2018-10-03 09:03:26,345 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 172 transitions. Word has length 118 [2018-10-03 09:03:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:26,346 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 172 transitions. [2018-10-03 09:03:26,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:03:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 172 transitions. [2018-10-03 09:03:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-03 09:03:26,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:26,347 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-10-03 09:03:26,347 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:26,347 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:26,347 INFO L82 PathProgramCache]: Analyzing trace with hash -285501792, now seen corresponding path program 24 times [2018-10-03 09:03:26,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:26,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:26,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:26,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:26,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:27,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:27,767 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:27,775 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:27,828 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:03:27,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:27,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:29,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:29,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-10-03 09:03:29,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:03:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:03:29,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:29,461 INFO L87 Difference]: Start difference. First operand 124 states and 172 transitions. Second operand 52 states. [2018-10-03 09:03:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:29,644 INFO L93 Difference]: Finished difference Result 135 states and 187 transitions. [2018-10-03 09:03:29,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:03:29,644 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 123 [2018-10-03 09:03:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:29,645 INFO L225 Difference]: With dead ends: 135 [2018-10-03 09:03:29,646 INFO L226 Difference]: Without dead ends: 133 [2018-10-03 09:03:29,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.8s impTime 27 [2018-10-03 09:03:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-03 09:03:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-10-03 09:03:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-03 09:03:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 179 transitions. [2018-10-03 09:03:29,651 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 179 transitions. Word has length 123 [2018-10-03 09:03:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:29,651 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 179 transitions. [2018-10-03 09:03:29,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:03:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 179 transitions. [2018-10-03 09:03:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 09:03:29,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:29,653 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-10-03 09:03:29,653 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:29,653 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:29,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1768277393, now seen corresponding path program 25 times [2018-10-03 09:03:29,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:29,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:29,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:29,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:29,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:30,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:30,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:30,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:30,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:31,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:31,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2018-10-03 09:03:31,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:03:31,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:03:31,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:31,128 INFO L87 Difference]: Start difference. First operand 129 states and 179 transitions. Second operand 54 states. [2018-10-03 09:03:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:31,364 INFO L93 Difference]: Finished difference Result 140 states and 194 transitions. [2018-10-03 09:03:31,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:03:31,365 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 128 [2018-10-03 09:03:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:31,366 INFO L225 Difference]: With dead ends: 140 [2018-10-03 09:03:31,366 INFO L226 Difference]: Without dead ends: 138 [2018-10-03 09:03:31,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 28 [2018-10-03 09:03:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-03 09:03:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-10-03 09:03:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-03 09:03:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2018-10-03 09:03:31,373 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 128 [2018-10-03 09:03:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:31,373 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2018-10-03 09:03:31,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:03:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2018-10-03 09:03:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-03 09:03:31,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:31,374 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-10-03 09:03:31,374 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:31,375 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:31,375 INFO L82 PathProgramCache]: Analyzing trace with hash -77052608, now seen corresponding path program 26 times [2018-10-03 09:03:31,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:31,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:31,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:31,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:31,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:31,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:31,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:32,007 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:32,046 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:32,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:32,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:33,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:33,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-10-03 09:03:33,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:03:33,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:03:33,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:33,222 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 56 states. [2018-10-03 09:03:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:33,479 INFO L93 Difference]: Finished difference Result 145 states and 201 transitions. [2018-10-03 09:03:33,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:03:33,479 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 133 [2018-10-03 09:03:33,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:33,480 INFO L225 Difference]: With dead ends: 145 [2018-10-03 09:03:33,480 INFO L226 Difference]: Without dead ends: 143 [2018-10-03 09:03:33,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 29 [2018-10-03 09:03:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-03 09:03:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-10-03 09:03:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-03 09:03:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2018-10-03 09:03:33,485 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 133 [2018-10-03 09:03:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:33,485 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2018-10-03 09:03:33,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:03:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2018-10-03 09:03:33,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 09:03:33,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:33,486 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-10-03 09:03:33,487 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:33,487 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:33,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1019034353, now seen corresponding path program 27 times [2018-10-03 09:03:33,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:33,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:33,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:33,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:33,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:34,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:34,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:34,162 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:34,217 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-03 09:03:34,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:34,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:35,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:35,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2018-10-03 09:03:35,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:03:35,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:03:35,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:35,189 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 58 states. [2018-10-03 09:03:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:35,426 INFO L93 Difference]: Finished difference Result 150 states and 208 transitions. [2018-10-03 09:03:35,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:03:35,427 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 138 [2018-10-03 09:03:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:35,428 INFO L225 Difference]: With dead ends: 150 [2018-10-03 09:03:35,428 INFO L226 Difference]: Without dead ends: 148 [2018-10-03 09:03:35,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 30 [2018-10-03 09:03:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-03 09:03:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-10-03 09:03:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-03 09:03:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2018-10-03 09:03:35,435 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 138 [2018-10-03 09:03:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:35,435 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2018-10-03 09:03:35,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:03:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2018-10-03 09:03:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-03 09:03:35,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:35,436 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-10-03 09:03:35,436 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:35,437 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:35,437 INFO L82 PathProgramCache]: Analyzing trace with hash -247256096, now seen corresponding path program 28 times [2018-10-03 09:03:35,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:35,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:35,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:35,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:35,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:36,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:36,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:36,094 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:36,133 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:36,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:36,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:37,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:37,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-10-03 09:03:37,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:03:37,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:03:37,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:37,472 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 60 states. [2018-10-03 09:03:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:37,751 INFO L93 Difference]: Finished difference Result 155 states and 215 transitions. [2018-10-03 09:03:37,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:03:37,751 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 143 [2018-10-03 09:03:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:37,752 INFO L225 Difference]: With dead ends: 155 [2018-10-03 09:03:37,753 INFO L226 Difference]: Without dead ends: 153 [2018-10-03 09:03:37,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 31 [2018-10-03 09:03:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-03 09:03:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-10-03 09:03:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-03 09:03:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 207 transitions. [2018-10-03 09:03:37,759 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 207 transitions. Word has length 143 [2018-10-03 09:03:37,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:37,760 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 207 transitions. [2018-10-03 09:03:37,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:03:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 207 transitions. [2018-10-03 09:03:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 09:03:37,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:37,761 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-10-03 09:03:37,761 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:37,761 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:37,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1791588433, now seen corresponding path program 29 times [2018-10-03 09:03:37,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:37,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:37,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:39,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:39,050 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:39,057 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:39,123 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-03 09:03:39,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:39,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:40,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2018-10-03 09:03:40,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:03:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:03:40,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:40,138 INFO L87 Difference]: Start difference. First operand 149 states and 207 transitions. Second operand 62 states. [2018-10-03 09:03:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:40,403 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2018-10-03 09:03:40,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:03:40,403 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 148 [2018-10-03 09:03:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:40,404 INFO L225 Difference]: With dead ends: 160 [2018-10-03 09:03:40,404 INFO L226 Difference]: Without dead ends: 158 [2018-10-03 09:03:40,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 32 [2018-10-03 09:03:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-03 09:03:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-10-03 09:03:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-03 09:03:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 214 transitions. [2018-10-03 09:03:40,410 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 214 transitions. Word has length 148 [2018-10-03 09:03:40,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:40,411 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 214 transitions. [2018-10-03 09:03:40,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:03:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 214 transitions. [2018-10-03 09:03:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-03 09:03:40,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:40,412 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-10-03 09:03:40,412 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:40,412 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:40,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1713785472, now seen corresponding path program 30 times [2018-10-03 09:03:40,412 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:40,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:40,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:40,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:40,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:41,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:41,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:41,381 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:41,444 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:03:41,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:41,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:42,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:42,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-10-03 09:03:42,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:03:42,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:03:42,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:42,518 INFO L87 Difference]: Start difference. First operand 154 states and 214 transitions. Second operand 64 states. [2018-10-03 09:03:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:42,781 INFO L93 Difference]: Finished difference Result 165 states and 229 transitions. [2018-10-03 09:03:42,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:03:42,781 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 153 [2018-10-03 09:03:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:42,782 INFO L225 Difference]: With dead ends: 165 [2018-10-03 09:03:42,782 INFO L226 Difference]: Without dead ends: 163 [2018-10-03 09:03:42,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 33 [2018-10-03 09:03:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-03 09:03:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-10-03 09:03:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-03 09:03:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2018-10-03 09:03:42,788 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 153 [2018-10-03 09:03:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:42,788 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2018-10-03 09:03:42,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:03:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2018-10-03 09:03:42,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 09:03:42,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:42,789 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-10-03 09:03:42,790 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:42,790 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:42,790 INFO L82 PathProgramCache]: Analyzing trace with hash -835682895, now seen corresponding path program 31 times [2018-10-03 09:03:42,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:42,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:42,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:42,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:43,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:43,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:43,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:43,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:44,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:44,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2018-10-03 09:03:44,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:03:44,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:03:44,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:44,592 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand 66 states. [2018-10-03 09:03:45,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:45,378 INFO L93 Difference]: Finished difference Result 170 states and 236 transitions. [2018-10-03 09:03:45,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:03:45,378 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 158 [2018-10-03 09:03:45,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:45,379 INFO L225 Difference]: With dead ends: 170 [2018-10-03 09:03:45,380 INFO L226 Difference]: Without dead ends: 168 [2018-10-03 09:03:45,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 34 [2018-10-03 09:03:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-03 09:03:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-10-03 09:03:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-03 09:03:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 228 transitions. [2018-10-03 09:03:45,386 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 228 transitions. Word has length 158 [2018-10-03 09:03:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:45,386 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 228 transitions. [2018-10-03 09:03:45,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:03:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 228 transitions. [2018-10-03 09:03:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-03 09:03:45,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:45,388 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-10-03 09:03:45,388 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:45,388 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash 925606176, now seen corresponding path program 32 times [2018-10-03 09:03:45,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:45,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:45,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:45,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:45,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:45,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:45,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:45,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:45,984 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:45,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:45,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:47,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:47,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-10-03 09:03:47,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:03:47,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:03:47,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:47,114 INFO L87 Difference]: Start difference. First operand 164 states and 228 transitions. Second operand 68 states. [2018-10-03 09:03:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:47,375 INFO L93 Difference]: Finished difference Result 175 states and 243 transitions. [2018-10-03 09:03:47,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:03:47,375 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 163 [2018-10-03 09:03:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:47,376 INFO L225 Difference]: With dead ends: 175 [2018-10-03 09:03:47,376 INFO L226 Difference]: Without dead ends: 173 [2018-10-03 09:03:47,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 35 [2018-10-03 09:03:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-03 09:03:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-10-03 09:03:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-03 09:03:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2018-10-03 09:03:47,383 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 163 [2018-10-03 09:03:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:47,383 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2018-10-03 09:03:47,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:03:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2018-10-03 09:03:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-03 09:03:47,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:47,384 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-10-03 09:03:47,385 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:47,385 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1441248495, now seen corresponding path program 33 times [2018-10-03 09:03:47,385 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:47,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:47,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:47,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:47,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:48,448 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:48,448 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:48,455 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:48,548 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-03 09:03:48,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:48,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:49,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:49,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69 [2018-10-03 09:03:49,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:03:49,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:03:49,832 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:49,832 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand 70 states. [2018-10-03 09:03:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:50,128 INFO L93 Difference]: Finished difference Result 180 states and 250 transitions. [2018-10-03 09:03:50,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:03:50,129 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 168 [2018-10-03 09:03:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:50,130 INFO L225 Difference]: With dead ends: 180 [2018-10-03 09:03:50,130 INFO L226 Difference]: Without dead ends: 178 [2018-10-03 09:03:50,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 36 [2018-10-03 09:03:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-03 09:03:50,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-10-03 09:03:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-03 09:03:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2018-10-03 09:03:50,136 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 168 [2018-10-03 09:03:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:50,136 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2018-10-03 09:03:50,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:03:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2018-10-03 09:03:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-03 09:03:50,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:50,138 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-10-03 09:03:50,138 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:50,138 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:50,138 INFO L82 PathProgramCache]: Analyzing trace with hash 686632896, now seen corresponding path program 34 times [2018-10-03 09:03:50,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:50,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:50,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:50,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:50,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:52,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:52,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:52,911 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:52,956 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:52,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:52,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:54,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:54,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-10-03 09:03:54,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:03:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:03:54,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:54,359 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand 72 states. [2018-10-03 09:03:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:54,645 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2018-10-03 09:03:54,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:03:54,645 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 173 [2018-10-03 09:03:54,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:54,646 INFO L225 Difference]: With dead ends: 185 [2018-10-03 09:03:54,646 INFO L226 Difference]: Without dead ends: 183 [2018-10-03 09:03:54,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 2.9s impTime 37 [2018-10-03 09:03:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-03 09:03:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-03 09:03:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-03 09:03:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2018-10-03 09:03:54,652 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 173 [2018-10-03 09:03:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:54,652 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2018-10-03 09:03:54,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:03:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2018-10-03 09:03:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 09:03:54,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:54,653 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-10-03 09:03:54,654 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:54,654 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:54,654 INFO L82 PathProgramCache]: Analyzing trace with hash 170319985, now seen corresponding path program 35 times [2018-10-03 09:03:54,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:54,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:54,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:54,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:54,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:55,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:55,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:55,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:55,452 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:55,567 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-03 09:03:55,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:55,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:58,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:58,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73 [2018-10-03 09:03:58,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:03:58,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:03:58,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:58,048 INFO L87 Difference]: Start difference. First operand 179 states and 249 transitions. Second operand 74 states. [2018-10-03 09:03:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:58,402 INFO L93 Difference]: Finished difference Result 190 states and 264 transitions. [2018-10-03 09:03:58,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:03:58,402 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 178 [2018-10-03 09:03:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:58,403 INFO L225 Difference]: With dead ends: 190 [2018-10-03 09:03:58,403 INFO L226 Difference]: Without dead ends: 188 [2018-10-03 09:03:58,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.6s impTime 38 [2018-10-03 09:03:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-03 09:03:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-10-03 09:03:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-03 09:03:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2018-10-03 09:03:58,409 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 178 [2018-10-03 09:03:58,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:58,410 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2018-10-03 09:03:58,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:03:58,410 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2018-10-03 09:03:58,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-03 09:03:58,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:58,411 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-10-03 09:03:58,411 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:58,411 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:58,411 INFO L82 PathProgramCache]: Analyzing trace with hash -2021329312, now seen corresponding path program 36 times [2018-10-03 09:03:58,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:58,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:58,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:58,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:58,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:00,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:00,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:00,811 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:00,888 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:04:00,888 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:00,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:02,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:02,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-10-03 09:04:02,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:04:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:04:02,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:02,797 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand 76 states. [2018-10-03 09:04:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:03,138 INFO L93 Difference]: Finished difference Result 195 states and 271 transitions. [2018-10-03 09:04:03,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:04:03,138 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 183 [2018-10-03 09:04:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:03,140 INFO L225 Difference]: With dead ends: 195 [2018-10-03 09:04:03,140 INFO L226 Difference]: Without dead ends: 193 [2018-10-03 09:04:03,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 2.8s impTime 39 [2018-10-03 09:04:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-03 09:04:03,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-10-03 09:04:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-03 09:04:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2018-10-03 09:04:03,146 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 183 [2018-10-03 09:04:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:03,146 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2018-10-03 09:04:03,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:04:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2018-10-03 09:04:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-03 09:04:03,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:03,148 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-10-03 09:04:03,148 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:03,148 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash 578960849, now seen corresponding path program 37 times [2018-10-03 09:04:03,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:03,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:03,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:03,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:03,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:04,197 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:04,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:05,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77 [2018-10-03 09:04:05,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:04:05,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:04:05,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:05,675 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 78 states. [2018-10-03 09:04:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:05,990 INFO L93 Difference]: Finished difference Result 200 states and 278 transitions. [2018-10-03 09:04:05,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:04:05,991 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 188 [2018-10-03 09:04:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:05,992 INFO L225 Difference]: With dead ends: 200 [2018-10-03 09:04:05,992 INFO L226 Difference]: Without dead ends: 198 [2018-10-03 09:04:05,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 40 [2018-10-03 09:04:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-03 09:04:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-10-03 09:04:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-03 09:04:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2018-10-03 09:04:05,998 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 188 [2018-10-03 09:04:05,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:05,999 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2018-10-03 09:04:05,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:04:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2018-10-03 09:04:06,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-03 09:04:06,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:06,000 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-10-03 09:04:06,000 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:06,000 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:06,001 INFO L82 PathProgramCache]: Analyzing trace with hash -963840768, now seen corresponding path program 38 times [2018-10-03 09:04:06,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:06,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:06,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:06,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:06,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:07,299 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:07,306 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:07,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:07,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:07,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,789 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:08,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-10-03 09:04:08,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:04:08,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:04:08,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:08,791 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 80 states. [2018-10-03 09:04:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:09,218 INFO L93 Difference]: Finished difference Result 205 states and 285 transitions. [2018-10-03 09:04:09,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:04:09,219 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 193 [2018-10-03 09:04:09,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:09,220 INFO L225 Difference]: With dead ends: 205 [2018-10-03 09:04:09,220 INFO L226 Difference]: Without dead ends: 203 [2018-10-03 09:04:09,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.6s impTime 41 [2018-10-03 09:04:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-03 09:04:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-10-03 09:04:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-03 09:04:09,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 277 transitions. [2018-10-03 09:04:09,224 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 277 transitions. Word has length 193 [2018-10-03 09:04:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:09,225 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 277 transitions. [2018-10-03 09:04:09,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:04:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 277 transitions. [2018-10-03 09:04:09,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 09:04:09,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:09,226 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-10-03 09:04:09,226 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:09,227 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:09,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1345297615, now seen corresponding path program 39 times [2018-10-03 09:04:09,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:09,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:09,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:09,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:09,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:10,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:10,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:10,723 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:10,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-03 09:04:10,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:10,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:12,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:12,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81 [2018-10-03 09:04:12,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:04:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:04:12,360 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:12,360 INFO L87 Difference]: Start difference. First operand 199 states and 277 transitions. Second operand 82 states. [2018-10-03 09:04:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:12,791 INFO L93 Difference]: Finished difference Result 210 states and 292 transitions. [2018-10-03 09:04:12,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:04:12,791 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 198 [2018-10-03 09:04:12,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:12,792 INFO L225 Difference]: With dead ends: 210 [2018-10-03 09:04:12,793 INFO L226 Difference]: Without dead ends: 208 [2018-10-03 09:04:12,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.9s impTime 42 [2018-10-03 09:04:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-03 09:04:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-10-03 09:04:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-03 09:04:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 284 transitions. [2018-10-03 09:04:12,797 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 284 transitions. Word has length 198 [2018-10-03 09:04:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:12,797 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 284 transitions. [2018-10-03 09:04:12,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:04:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 284 transitions. [2018-10-03 09:04:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-03 09:04:12,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:12,798 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-10-03 09:04:12,798 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:12,799 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:12,799 INFO L82 PathProgramCache]: Analyzing trace with hash 555690912, now seen corresponding path program 40 times [2018-10-03 09:04:12,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:12,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:12,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:12,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:12,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:13,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:13,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:13,567 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:13,621 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:13,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:13,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:15,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:15,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-10-03 09:04:15,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:04:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:04:15,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:15,280 INFO L87 Difference]: Start difference. First operand 204 states and 284 transitions. Second operand 84 states. [2018-10-03 09:04:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:15,709 INFO L93 Difference]: Finished difference Result 215 states and 299 transitions. [2018-10-03 09:04:15,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:04:15,709 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 203 [2018-10-03 09:04:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:15,711 INFO L225 Difference]: With dead ends: 215 [2018-10-03 09:04:15,711 INFO L226 Difference]: Without dead ends: 213 [2018-10-03 09:04:15,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 43 [2018-10-03 09:04:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-03 09:04:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-10-03 09:04:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-03 09:04:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 291 transitions. [2018-10-03 09:04:15,737 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 291 transitions. Word has length 203 [2018-10-03 09:04:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:15,737 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 291 transitions. [2018-10-03 09:04:15,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:04:15,737 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 291 transitions. [2018-10-03 09:04:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-03 09:04:15,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:15,738 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-10-03 09:04:15,739 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:15,739 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:15,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1463242897, now seen corresponding path program 41 times [2018-10-03 09:04:15,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:15,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:15,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:15,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:15,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:16,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:16,650 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:16,661 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:16,751 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-03 09:04:16,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:16,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:20,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:20,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 85 [2018-10-03 09:04:20,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:04:20,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:04:20,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:20,975 INFO L87 Difference]: Start difference. First operand 209 states and 291 transitions. Second operand 86 states. [2018-10-03 09:04:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:21,409 INFO L93 Difference]: Finished difference Result 220 states and 306 transitions. [2018-10-03 09:04:21,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:04:21,409 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 208 [2018-10-03 09:04:21,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:21,410 INFO L225 Difference]: With dead ends: 220 [2018-10-03 09:04:21,410 INFO L226 Difference]: Without dead ends: 218 [2018-10-03 09:04:21,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 3.3s impTime 44 [2018-10-03 09:04:21,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-03 09:04:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-10-03 09:04:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-03 09:04:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 298 transitions. [2018-10-03 09:04:21,416 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 298 transitions. Word has length 208 [2018-10-03 09:04:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:21,416 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 298 transitions. [2018-10-03 09:04:21,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:04:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 298 transitions. [2018-10-03 09:04:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-03 09:04:21,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:21,417 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-10-03 09:04:21,417 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:21,418 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash 970299968, now seen corresponding path program 42 times [2018-10-03 09:04:21,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:21,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:21,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:21,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:21,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:22,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:22,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:22,715 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:22,811 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:04:22,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:22,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:24,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:24,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-10-03 09:04:24,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:04:24,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:04:24,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:24,833 INFO L87 Difference]: Start difference. First operand 214 states and 298 transitions. Second operand 88 states. [2018-10-03 09:04:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:25,275 INFO L93 Difference]: Finished difference Result 225 states and 313 transitions. [2018-10-03 09:04:25,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:04:25,276 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 213 [2018-10-03 09:04:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:25,277 INFO L225 Difference]: With dead ends: 225 [2018-10-03 09:04:25,277 INFO L226 Difference]: Without dead ends: 223 [2018-10-03 09:04:25,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.0s impTime 45 [2018-10-03 09:04:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-03 09:04:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-10-03 09:04:25,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-03 09:04:25,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 305 transitions. [2018-10-03 09:04:25,282 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 305 transitions. Word has length 213 [2018-10-03 09:04:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:25,283 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 305 transitions. [2018-10-03 09:04:25,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:04:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 305 transitions. [2018-10-03 09:04:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 09:04:25,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:25,284 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-10-03 09:04:25,284 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:25,285 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:25,285 INFO L82 PathProgramCache]: Analyzing trace with hash 106759665, now seen corresponding path program 43 times [2018-10-03 09:04:25,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:25,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:25,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:25,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:25,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:26,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:26,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:26,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:26,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:28,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:28,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 89 [2018-10-03 09:04:28,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:04:28,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:04:28,029 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:28,029 INFO L87 Difference]: Start difference. First operand 219 states and 305 transitions. Second operand 90 states. [2018-10-03 09:04:28,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:28,467 INFO L93 Difference]: Finished difference Result 230 states and 320 transitions. [2018-10-03 09:04:28,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:04:28,467 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 218 [2018-10-03 09:04:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:28,468 INFO L225 Difference]: With dead ends: 230 [2018-10-03 09:04:28,468 INFO L226 Difference]: Without dead ends: 228 [2018-10-03 09:04:28,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 46 [2018-10-03 09:04:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-03 09:04:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-10-03 09:04:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-03 09:04:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 312 transitions. [2018-10-03 09:04:28,473 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 312 transitions. Word has length 218 [2018-10-03 09:04:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:28,473 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 312 transitions. [2018-10-03 09:04:28,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:04:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 312 transitions. [2018-10-03 09:04:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-03 09:04:28,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:28,474 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-10-03 09:04:28,475 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:28,475 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1161150240, now seen corresponding path program 44 times [2018-10-03 09:04:28,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:28,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:28,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:28,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:28,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:29,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:29,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:29,322 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:29,378 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:29,379 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:29,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:31,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:31,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-10-03 09:04:31,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:04:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:04:31,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:31,014 INFO L87 Difference]: Start difference. First operand 224 states and 312 transitions. Second operand 92 states. [2018-10-03 09:04:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:31,527 INFO L93 Difference]: Finished difference Result 235 states and 327 transitions. [2018-10-03 09:04:31,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:04:31,528 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 223 [2018-10-03 09:04:31,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:31,529 INFO L225 Difference]: With dead ends: 235 [2018-10-03 09:04:31,529 INFO L226 Difference]: Without dead ends: 233 [2018-10-03 09:04:31,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 47 [2018-10-03 09:04:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-03 09:04:31,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-10-03 09:04:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-03 09:04:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2018-10-03 09:04:31,534 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 223 [2018-10-03 09:04:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:31,534 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2018-10-03 09:04:31,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:04:31,535 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2018-10-03 09:04:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-03 09:04:31,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:31,535 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-10-03 09:04:31,536 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:31,536 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:31,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1399292753, now seen corresponding path program 45 times [2018-10-03 09:04:31,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:31,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:31,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:31,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:31,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:32,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:32,396 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:32,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:32,513 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-03 09:04:32,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:32,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:34,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:34,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93 [2018-10-03 09:04:34,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:04:34,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:04:34,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:34,060 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand 94 states. [2018-10-03 09:04:34,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:34,595 INFO L93 Difference]: Finished difference Result 240 states and 334 transitions. [2018-10-03 09:04:34,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:04:34,595 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 228 [2018-10-03 09:04:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:34,596 INFO L225 Difference]: With dead ends: 240 [2018-10-03 09:04:34,597 INFO L226 Difference]: Without dead ends: 238 [2018-10-03 09:04:34,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 48 [2018-10-03 09:04:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-03 09:04:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-10-03 09:04:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-03 09:04:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 326 transitions. [2018-10-03 09:04:34,604 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 326 transitions. Word has length 228 [2018-10-03 09:04:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:34,604 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 326 transitions. [2018-10-03 09:04:34,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:04:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 326 transitions. [2018-10-03 09:04:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-03 09:04:34,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:34,606 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-10-03 09:04:34,606 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:34,606 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:34,607 INFO L82 PathProgramCache]: Analyzing trace with hash -174645376, now seen corresponding path program 46 times [2018-10-03 09:04:34,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:34,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:34,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:34,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:34,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:36,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:36,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:36,207 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:36,281 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:36,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:36,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:38,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:38,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-10-03 09:04:38,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:04:38,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:04:38,373 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:38,373 INFO L87 Difference]: Start difference. First operand 234 states and 326 transitions. Second operand 96 states. [2018-10-03 09:04:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:38,878 INFO L93 Difference]: Finished difference Result 245 states and 341 transitions. [2018-10-03 09:04:38,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:04:38,879 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 233 [2018-10-03 09:04:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:38,880 INFO L225 Difference]: With dead ends: 245 [2018-10-03 09:04:38,880 INFO L226 Difference]: Without dead ends: 243 [2018-10-03 09:04:38,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.3s impTime 49 [2018-10-03 09:04:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-03 09:04:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-10-03 09:04:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-03 09:04:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2018-10-03 09:04:38,887 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 233 [2018-10-03 09:04:38,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:38,888 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2018-10-03 09:04:38,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:04:38,888 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2018-10-03 09:04:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-03 09:04:38,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:38,889 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-10-03 09:04:38,890 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:38,890 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash -587413327, now seen corresponding path program 47 times [2018-10-03 09:04:38,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:38,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:38,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:40,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:40,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:40,444 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:40,550 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-03 09:04:40,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:40,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:42,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:42,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2018-10-03 09:04:42,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:04:42,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:04:42,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:42,518 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand 98 states. [2018-10-03 09:04:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:43,101 INFO L93 Difference]: Finished difference Result 250 states and 348 transitions. [2018-10-03 09:04:43,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:04:43,101 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 238 [2018-10-03 09:04:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:43,103 INFO L225 Difference]: With dead ends: 250 [2018-10-03 09:04:43,103 INFO L226 Difference]: Without dead ends: 248 [2018-10-03 09:04:43,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.3s impTime 50 [2018-10-03 09:04:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-03 09:04:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-10-03 09:04:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-03 09:04:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 340 transitions. [2018-10-03 09:04:43,110 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 340 transitions. Word has length 238 [2018-10-03 09:04:43,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:43,111 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 340 transitions. [2018-10-03 09:04:43,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:04:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 340 transitions. [2018-10-03 09:04:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-03 09:04:43,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:43,112 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-10-03 09:04:43,112 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:43,113 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:43,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2091502048, now seen corresponding path program 48 times [2018-10-03 09:04:43,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:43,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:43,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:43,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:43,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:44,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:44,045 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:44,053 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:44,167 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:04:44,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:44,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:46,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:46,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-10-03 09:04:46,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:04:46,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:04:46,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:46,347 INFO L87 Difference]: Start difference. First operand 244 states and 340 transitions. Second operand 100 states. [2018-10-03 09:04:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:46,960 INFO L93 Difference]: Finished difference Result 255 states and 355 transitions. [2018-10-03 09:04:46,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:04:46,960 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 243 [2018-10-03 09:04:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:46,961 INFO L225 Difference]: With dead ends: 255 [2018-10-03 09:04:46,961 INFO L226 Difference]: Without dead ends: 253 [2018-10-03 09:04:46,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.9s impTime 51 [2018-10-03 09:04:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-03 09:04:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-10-03 09:04:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-03 09:04:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2018-10-03 09:04:46,966 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 243 [2018-10-03 09:04:46,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:46,967 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2018-10-03 09:04:46,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:04:46,967 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2018-10-03 09:04:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-03 09:04:46,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:46,968 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-10-03 09:04:46,968 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:46,968 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:46,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1438460399, now seen corresponding path program 49 times [2018-10-03 09:04:46,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:46,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:46,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:46,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:46,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:48,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:48,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:48,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:48,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:51,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:51,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101 [2018-10-03 09:04:51,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:04:51,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:04:51,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:51,005 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand 102 states. [2018-10-03 09:04:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:51,655 INFO L93 Difference]: Finished difference Result 260 states and 362 transitions. [2018-10-03 09:04:51,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:04:51,656 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 248 [2018-10-03 09:04:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:51,658 INFO L225 Difference]: With dead ends: 260 [2018-10-03 09:04:51,658 INFO L226 Difference]: Without dead ends: 258 [2018-10-03 09:04:51,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.6s impTime 52 [2018-10-03 09:04:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-03 09:04:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-10-03 09:04:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-03 09:04:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2018-10-03 09:04:51,666 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 248 [2018-10-03 09:04:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:51,666 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2018-10-03 09:04:51,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:04:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2018-10-03 09:04:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-03 09:04:51,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:51,673 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-10-03 09:04:51,673 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:51,673 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:51,673 INFO L82 PathProgramCache]: Analyzing trace with hash -459176768, now seen corresponding path program 50 times [2018-10-03 09:04:51,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:51,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:51,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:51,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:51,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:52,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:52,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:52,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:52,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:52,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:52,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:54,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:54,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-10-03 09:04:54,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:04:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:04:54,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:54,689 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand 104 states. [2018-10-03 09:04:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:55,261 INFO L93 Difference]: Finished difference Result 265 states and 369 transitions. [2018-10-03 09:04:55,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:04:55,261 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 253 [2018-10-03 09:04:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:55,262 INFO L225 Difference]: With dead ends: 265 [2018-10-03 09:04:55,262 INFO L226 Difference]: Without dead ends: 263 [2018-10-03 09:04:55,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.6s impTime 53 [2018-10-03 09:04:55,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-03 09:04:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-10-03 09:04:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-03 09:04:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 361 transitions. [2018-10-03 09:04:55,270 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 361 transitions. Word has length 253 [2018-10-03 09:04:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:55,270 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 361 transitions. [2018-10-03 09:04:55,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:04:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 361 transitions. [2018-10-03 09:04:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-03 09:04:55,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:55,272 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-10-03 09:04:55,272 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:55,272 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:55,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1965053071, now seen corresponding path program 51 times [2018-10-03 09:04:55,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:55,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:55,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:55,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:55,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:56,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:56,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:56,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:56,543 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-03 09:04:56,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:56,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:58,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:58,751 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:58,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105 [2018-10-03 09:04:58,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:04:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:04:58,753 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:58,753 INFO L87 Difference]: Start difference. First operand 259 states and 361 transitions. Second operand 106 states. [2018-10-03 09:04:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:59,477 INFO L93 Difference]: Finished difference Result 270 states and 376 transitions. [2018-10-03 09:04:59,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:04:59,477 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 258 [2018-10-03 09:04:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:59,479 INFO L225 Difference]: With dead ends: 270 [2018-10-03 09:04:59,479 INFO L226 Difference]: Without dead ends: 268 [2018-10-03 09:04:59,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.0s impTime 54 [2018-10-03 09:04:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-10-03 09:04:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-10-03 09:04:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-10-03 09:04:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 368 transitions. [2018-10-03 09:04:59,485 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 368 transitions. Word has length 258 [2018-10-03 09:04:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:59,486 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 368 transitions. [2018-10-03 09:04:59,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:04:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 368 transitions. [2018-10-03 09:04:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-03 09:04:59,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:59,487 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-10-03 09:04:59,487 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:59,487 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:59,488 INFO L82 PathProgramCache]: Analyzing trace with hash 563284832, now seen corresponding path program 52 times [2018-10-03 09:04:59,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:59,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:59,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:59,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:59,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:00,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:00,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:00,951 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:01,016 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:01,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:01,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:03,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:03,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-10-03 09:05:03,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:05:03,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:05:03,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:03,263 INFO L87 Difference]: Start difference. First operand 264 states and 368 transitions. Second operand 108 states. [2018-10-03 09:05:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:03,944 INFO L93 Difference]: Finished difference Result 275 states and 383 transitions. [2018-10-03 09:05:03,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:05:03,944 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 263 [2018-10-03 09:05:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:03,945 INFO L225 Difference]: With dead ends: 275 [2018-10-03 09:05:03,945 INFO L226 Difference]: Without dead ends: 273 [2018-10-03 09:05:03,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.4s impTime 55 [2018-10-03 09:05:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-03 09:05:03,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-10-03 09:05:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-03 09:05:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2018-10-03 09:05:03,951 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 263 [2018-10-03 09:05:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:03,951 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2018-10-03 09:05:03,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:05:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2018-10-03 09:05:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-03 09:05:03,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:03,952 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-10-03 09:05:03,953 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:03,953 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1996048593, now seen corresponding path program 53 times [2018-10-03 09:05:03,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:03,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:03,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:03,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:03,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:05,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:05,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:05,135 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:05,253 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-03 09:05:05,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:05,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:07,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:07,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 109 [2018-10-03 09:05:07,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:05:07,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:05:07,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:07,770 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand 110 states. [2018-10-03 09:05:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:08,515 INFO L93 Difference]: Finished difference Result 280 states and 390 transitions. [2018-10-03 09:05:08,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:05:08,516 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 268 [2018-10-03 09:05:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:08,517 INFO L225 Difference]: With dead ends: 280 [2018-10-03 09:05:08,517 INFO L226 Difference]: Without dead ends: 278 [2018-10-03 09:05:08,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.3s impTime 56 [2018-10-03 09:05:08,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-10-03 09:05:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-10-03 09:05:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-10-03 09:05:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 382 transitions. [2018-10-03 09:05:08,525 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 382 transitions. Word has length 268 [2018-10-03 09:05:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:08,525 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 382 transitions. [2018-10-03 09:05:08,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:05:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 382 transitions. [2018-10-03 09:05:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-03 09:05:08,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:08,527 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-10-03 09:05:08,527 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:08,527 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1774504448, now seen corresponding path program 54 times [2018-10-03 09:05:08,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:08,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:08,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:08,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:08,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:09,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:09,583 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:09,600 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:09,728 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:05:09,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:09,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:11,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:11,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:11,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-10-03 09:05:11,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:05:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:05:11,786 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:11,786 INFO L87 Difference]: Start difference. First operand 274 states and 382 transitions. Second operand 112 states. [2018-10-03 09:05:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:12,578 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2018-10-03 09:05:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:05:12,579 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 273 [2018-10-03 09:05:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:12,580 INFO L225 Difference]: With dead ends: 285 [2018-10-03 09:05:12,580 INFO L226 Difference]: Without dead ends: 283 [2018-10-03 09:05:12,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.7s impTime 57 [2018-10-03 09:05:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-03 09:05:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-10-03 09:05:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-03 09:05:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 389 transitions. [2018-10-03 09:05:12,588 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 389 transitions. Word has length 273 [2018-10-03 09:05:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:12,588 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 389 transitions. [2018-10-03 09:05:12,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:05:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 389 transitions. [2018-10-03 09:05:12,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-03 09:05:12,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:12,590 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1] [2018-10-03 09:05:12,590 INFO L423 AbstractCegarLoop]: === Iteration 57 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:12,590 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:12,590 INFO L82 PathProgramCache]: Analyzing trace with hash -281694671, now seen corresponding path program 55 times [2018-10-03 09:05:12,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:12,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:12,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:12,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:12,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:14,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:14,027 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:14,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:14,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:16,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:16,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113 [2018-10-03 09:05:16,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:05:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:05:16,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:16,764 INFO L87 Difference]: Start difference. First operand 279 states and 389 transitions. Second operand 114 states. [2018-10-03 09:05:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:17,504 INFO L93 Difference]: Finished difference Result 290 states and 404 transitions. [2018-10-03 09:05:17,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:05:17,504 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 278 [2018-10-03 09:05:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:17,505 INFO L225 Difference]: With dead ends: 290 [2018-10-03 09:05:17,506 INFO L226 Difference]: Without dead ends: 288 [2018-10-03 09:05:17,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.8s impTime 58 [2018-10-03 09:05:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-10-03 09:05:17,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2018-10-03 09:05:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-03 09:05:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 396 transitions. [2018-10-03 09:05:17,511 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 396 transitions. Word has length 278 [2018-10-03 09:05:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:17,511 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 396 transitions. [2018-10-03 09:05:17,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:05:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 396 transitions. [2018-10-03 09:05:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-03 09:05:17,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:17,513 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1] [2018-10-03 09:05:17,513 INFO L423 AbstractCegarLoop]: === Iteration 58 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:17,513 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:17,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1269776224, now seen corresponding path program 56 times [2018-10-03 09:05:17,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:17,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:17,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:17,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:17,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:19,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:19,114 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:19,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:19,199 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:19,199 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:19,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:21,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:21,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-10-03 09:05:21,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 09:05:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 09:05:21,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:21,926 INFO L87 Difference]: Start difference. First operand 284 states and 396 transitions. Second operand 116 states. [2018-10-03 09:05:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:22,759 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-10-03 09:05:22,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:05:22,759 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 283 [2018-10-03 09:05:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:22,760 INFO L225 Difference]: With dead ends: 295 [2018-10-03 09:05:22,760 INFO L226 Difference]: Without dead ends: 293 [2018-10-03 09:05:22,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.8s impTime 59 [2018-10-03 09:05:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-10-03 09:05:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-10-03 09:05:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-03 09:05:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2018-10-03 09:05:22,766 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 283 [2018-10-03 09:05:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:22,766 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2018-10-03 09:05:22,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-03 09:05:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2018-10-03 09:05:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-03 09:05:22,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:22,767 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1] [2018-10-03 09:05:22,767 INFO L423 AbstractCegarLoop]: === Iteration 59 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:22,768 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:22,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1555749777, now seen corresponding path program 57 times [2018-10-03 09:05:22,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:22,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:22,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:22,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:22,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:24,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:24,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:24,823 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:24,958 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-03 09:05:24,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:24,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:27,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:27,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117 [2018-10-03 09:05:27,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-03 09:05:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-03 09:05:27,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:27,837 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand 118 states. [2018-10-03 09:05:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:28,649 INFO L93 Difference]: Finished difference Result 300 states and 418 transitions. [2018-10-03 09:05:28,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:05:28,649 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 288 [2018-10-03 09:05:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:28,650 INFO L225 Difference]: With dead ends: 300 [2018-10-03 09:05:28,651 INFO L226 Difference]: Without dead ends: 298 [2018-10-03 09:05:28,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s Time 3.4s impTime 60 [2018-10-03 09:05:28,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-10-03 09:05:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-10-03 09:05:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-03 09:05:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 410 transitions. [2018-10-03 09:05:28,658 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 410 transitions. Word has length 288 [2018-10-03 09:05:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:28,658 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 410 transitions. [2018-10-03 09:05:28,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-03 09:05:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 410 transitions. [2018-10-03 09:05:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-03 09:05:28,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:28,660 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1] [2018-10-03 09:05:28,660 INFO L423 AbstractCegarLoop]: === Iteration 60 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:28,660 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1607528256, now seen corresponding path program 58 times [2018-10-03 09:05:28,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:28,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:28,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:28,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:28,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:30,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:30,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:30,703 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:30,773 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:30,773 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:30,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:33,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:33,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-10-03 09:05:33,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-03 09:05:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-03 09:05:33,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:33,592 INFO L87 Difference]: Start difference. First operand 294 states and 410 transitions. Second operand 120 states. [2018-10-03 09:05:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:34,387 INFO L93 Difference]: Finished difference Result 305 states and 425 transitions. [2018-10-03 09:05:34,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:05:34,387 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 293 [2018-10-03 09:05:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:34,389 INFO L225 Difference]: With dead ends: 305 [2018-10-03 09:05:34,389 INFO L226 Difference]: Without dead ends: 303 [2018-10-03 09:05:34,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.3s impTime 61 [2018-10-03 09:05:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-03 09:05:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-10-03 09:05:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-03 09:05:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 417 transitions. [2018-10-03 09:05:34,397 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 417 transitions. Word has length 293 [2018-10-03 09:05:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:34,397 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 417 transitions. [2018-10-03 09:05:34,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-03 09:05:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 417 transitions. [2018-10-03 09:05:34,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-03 09:05:34,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:34,399 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1] [2018-10-03 09:05:34,399 INFO L423 AbstractCegarLoop]: === Iteration 61 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:34,399 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1898893553, now seen corresponding path program 59 times [2018-10-03 09:05:34,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:34,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:34,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:34,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:34,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:35,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:35,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:35,587 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:35,734 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-03 09:05:35,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:35,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:38,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:38,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 121 [2018-10-03 09:05:38,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-03 09:05:38,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-03 09:05:38,017 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:38,017 INFO L87 Difference]: Start difference. First operand 299 states and 417 transitions. Second operand 122 states. [2018-10-03 09:05:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:38,879 INFO L93 Difference]: Finished difference Result 310 states and 432 transitions. [2018-10-03 09:05:38,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:05:38,879 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 298 [2018-10-03 09:05:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:38,881 INFO L225 Difference]: With dead ends: 310 [2018-10-03 09:05:38,881 INFO L226 Difference]: Without dead ends: 308 [2018-10-03 09:05:38,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.9s impTime 62 [2018-10-03 09:05:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-10-03 09:05:38,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2018-10-03 09:05:38,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-10-03 09:05:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 424 transitions. [2018-10-03 09:05:38,886 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 424 transitions. Word has length 298 [2018-10-03 09:05:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:38,887 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 424 transitions. [2018-10-03 09:05:38,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-03 09:05:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 424 transitions. [2018-10-03 09:05:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-03 09:05:38,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:38,889 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1] [2018-10-03 09:05:38,889 INFO L423 AbstractCegarLoop]: === Iteration 62 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:38,889 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -765504032, now seen corresponding path program 60 times [2018-10-03 09:05:38,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:38,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:38,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:38,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:38,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:40,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:40,105 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:40,113 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:40,250 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-03 09:05:40,250 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:40,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:42,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:42,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-10-03 09:05:42,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-03 09:05:42,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-03 09:05:42,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:42,610 INFO L87 Difference]: Start difference. First operand 304 states and 424 transitions. Second operand 124 states. [2018-10-03 09:05:43,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:43,514 INFO L93 Difference]: Finished difference Result 315 states and 439 transitions. [2018-10-03 09:05:43,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:05:43,514 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 303 [2018-10-03 09:05:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:43,515 INFO L225 Difference]: With dead ends: 315 [2018-10-03 09:05:43,515 INFO L226 Difference]: Without dead ends: 313 [2018-10-03 09:05:43,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.0s impTime 63 [2018-10-03 09:05:43,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-03 09:05:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-10-03 09:05:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-10-03 09:05:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 431 transitions. [2018-10-03 09:05:43,522 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 431 transitions. Word has length 303 [2018-10-03 09:05:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:43,522 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 431 transitions. [2018-10-03 09:05:43,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-03 09:05:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 431 transitions. [2018-10-03 09:05:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-03 09:05:43,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:43,523 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1] [2018-10-03 09:05:43,524 INFO L423 AbstractCegarLoop]: === Iteration 63 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:43,524 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2034790831, now seen corresponding path program 61 times [2018-10-03 09:05:43,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:43,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:43,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:43,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:43,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:45,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:45,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:45,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:45,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:48,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:48,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 125 [2018-10-03 09:05:48,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-03 09:05:48,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-03 09:05:48,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:48,502 INFO L87 Difference]: Start difference. First operand 309 states and 431 transitions. Second operand 126 states. [2018-10-03 09:05:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:49,365 INFO L93 Difference]: Finished difference Result 320 states and 446 transitions. [2018-10-03 09:05:49,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:05:49,365 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 308 [2018-10-03 09:05:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:49,367 INFO L225 Difference]: With dead ends: 320 [2018-10-03 09:05:49,367 INFO L226 Difference]: Without dead ends: 318 [2018-10-03 09:05:49,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.3s impTime 64 [2018-10-03 09:05:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-10-03 09:05:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2018-10-03 09:05:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-10-03 09:05:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 438 transitions. [2018-10-03 09:05:49,375 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 438 transitions. Word has length 308 [2018-10-03 09:05:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:49,375 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 438 transitions. [2018-10-03 09:05:49,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-03 09:05:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 438 transitions. [2018-10-03 09:05:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-03 09:05:49,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:49,377 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1] [2018-10-03 09:05:49,378 INFO L423 AbstractCegarLoop]: === Iteration 64 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:49,378 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash 429257856, now seen corresponding path program 62 times [2018-10-03 09:05:49,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:49,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:49,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:49,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:49,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:50,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:50,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:50,774 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:50,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:50,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:53,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:53,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-10-03 09:05:53,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-03 09:05:53,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-03 09:05:53,341 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:53,341 INFO L87 Difference]: Start difference. First operand 314 states and 438 transitions. Second operand 128 states. [2018-10-03 09:05:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:54,355 INFO L93 Difference]: Finished difference Result 325 states and 453 transitions. [2018-10-03 09:05:54,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:05:54,355 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 313 [2018-10-03 09:05:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:54,357 INFO L225 Difference]: With dead ends: 325 [2018-10-03 09:05:54,357 INFO L226 Difference]: Without dead ends: 323 [2018-10-03 09:05:54,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.3s impTime 65 [2018-10-03 09:05:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-03 09:05:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-10-03 09:05:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-03 09:05:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 445 transitions. [2018-10-03 09:05:54,363 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 445 transitions. Word has length 313 [2018-10-03 09:05:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:54,363 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 445 transitions. [2018-10-03 09:05:54,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-03 09:05:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 445 transitions. [2018-10-03 09:05:54,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-03 09:05:54,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:54,365 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1] [2018-10-03 09:05:54,365 INFO L423 AbstractCegarLoop]: === Iteration 65 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:54,365 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:54,365 INFO L82 PathProgramCache]: Analyzing trace with hash -322639, now seen corresponding path program 63 times [2018-10-03 09:05:54,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:54,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:54,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:54,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:54,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:55,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:55,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:55,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:55,635 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-03 09:05:55,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:55,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:58,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:58,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2018-10-03 09:05:58,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-03 09:05:58,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-03 09:05:58,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:58,312 INFO L87 Difference]: Start difference. First operand 319 states and 445 transitions. Second operand 130 states. [2018-10-03 09:05:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:59,394 INFO L93 Difference]: Finished difference Result 330 states and 460 transitions. [2018-10-03 09:05:59,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:05:59,394 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 318 [2018-10-03 09:05:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:59,396 INFO L225 Difference]: With dead ends: 330 [2018-10-03 09:05:59,396 INFO L226 Difference]: Without dead ends: 328 [2018-10-03 09:05:59,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.1s impTime 66 [2018-10-03 09:05:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-03 09:05:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-10-03 09:05:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-10-03 09:05:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2018-10-03 09:05:59,402 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 318 [2018-10-03 09:05:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:59,402 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2018-10-03 09:05:59,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-03 09:05:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2018-10-03 09:05:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-03 09:05:59,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:59,404 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1] [2018-10-03 09:05:59,404 INFO L423 AbstractCegarLoop]: === Iteration 66 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:59,404 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1970353376, now seen corresponding path program 64 times [2018-10-03 09:05:59,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:59,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:59,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:59,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:00,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:00,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:00,536 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:00,618 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:00,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:00,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:03,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:03,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-10-03 09:06:03,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-03 09:06:03,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-03 09:06:03,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:03,248 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand 132 states. [2018-10-03 09:06:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:04,282 INFO L93 Difference]: Finished difference Result 335 states and 467 transitions. [2018-10-03 09:06:04,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:06:04,282 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 323 [2018-10-03 09:06:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:04,283 INFO L225 Difference]: With dead ends: 335 [2018-10-03 09:06:04,283 INFO L226 Difference]: Without dead ends: 333 [2018-10-03 09:06:04,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.1s impTime 67 [2018-10-03 09:06:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-03 09:06:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-10-03 09:06:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-03 09:06:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 459 transitions. [2018-10-03 09:06:04,290 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 459 transitions. Word has length 323 [2018-10-03 09:06:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:04,290 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 459 transitions. [2018-10-03 09:06:04,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-03 09:06:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 459 transitions. [2018-10-03 09:06:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-03 09:06:04,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:04,292 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1] [2018-10-03 09:06:04,292 INFO L423 AbstractCegarLoop]: === Iteration 67 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:04,292 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:04,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1474338543, now seen corresponding path program 65 times [2018-10-03 09:06:04,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:04,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:04,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:04,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:04,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:05,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:05,211 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:05,218 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:05,377 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-03 09:06:05,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:05,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:07,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:07,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 133 [2018-10-03 09:06:07,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-03 09:06:07,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-03 09:06:07,863 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:07,863 INFO L87 Difference]: Start difference. First operand 329 states and 459 transitions. Second operand 134 states. [2018-10-03 09:06:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:09,017 INFO L93 Difference]: Finished difference Result 340 states and 474 transitions. [2018-10-03 09:06:09,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:06:09,017 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 328 [2018-10-03 09:06:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:09,018 INFO L225 Difference]: With dead ends: 340 [2018-10-03 09:06:09,019 INFO L226 Difference]: Without dead ends: 338 [2018-10-03 09:06:09,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.7s impTime 68 [2018-10-03 09:06:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-10-03 09:06:09,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2018-10-03 09:06:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-10-03 09:06:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 466 transitions. [2018-10-03 09:06:09,025 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 466 transitions. Word has length 328 [2018-10-03 09:06:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:09,025 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 466 transitions. [2018-10-03 09:06:09,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-03 09:06:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 466 transitions. [2018-10-03 09:06:09,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-03 09:06:09,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:09,036 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1] [2018-10-03 09:06:09,037 INFO L423 AbstractCegarLoop]: === Iteration 68 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:09,037 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:09,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1642322368, now seen corresponding path program 66 times [2018-10-03 09:06:09,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:09,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:09,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:09,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:09,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:10,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:10,341 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:10,348 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:10,515 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-03 09:06:10,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:10,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:13,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:13,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-10-03 09:06:13,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-03 09:06:13,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-03 09:06:13,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:13,399 INFO L87 Difference]: Start difference. First operand 334 states and 466 transitions. Second operand 136 states. [2018-10-03 09:06:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:14,576 INFO L93 Difference]: Finished difference Result 345 states and 481 transitions. [2018-10-03 09:06:14,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:06:14,576 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 333 [2018-10-03 09:06:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:14,577 INFO L225 Difference]: With dead ends: 345 [2018-10-03 09:06:14,577 INFO L226 Difference]: Without dead ends: 343 [2018-10-03 09:06:14,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.4s impTime 69 [2018-10-03 09:06:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-03 09:06:14,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-10-03 09:06:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-03 09:06:14,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 473 transitions. [2018-10-03 09:06:14,586 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 473 transitions. Word has length 333 [2018-10-03 09:06:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:14,586 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 473 transitions. [2018-10-03 09:06:14,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-03 09:06:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 473 transitions. [2018-10-03 09:06:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-03 09:06:14,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:14,588 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1] [2018-10-03 09:06:14,589 INFO L423 AbstractCegarLoop]: === Iteration 69 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:14,589 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash 315258481, now seen corresponding path program 67 times [2018-10-03 09:06:14,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:14,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:14,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:16,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:16,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:16,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:16,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:19,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:19,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 137 [2018-10-03 09:06:19,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-03 09:06:19,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-03 09:06:19,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:19,101 INFO L87 Difference]: Start difference. First operand 339 states and 473 transitions. Second operand 138 states. [2018-10-03 09:06:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:20,267 INFO L93 Difference]: Finished difference Result 350 states and 488 transitions. [2018-10-03 09:06:20,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:06:20,267 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 338 [2018-10-03 09:06:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:20,269 INFO L225 Difference]: With dead ends: 350 [2018-10-03 09:06:20,269 INFO L226 Difference]: Without dead ends: 348 [2018-10-03 09:06:20,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.7s impTime 70 [2018-10-03 09:06:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-10-03 09:06:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2018-10-03 09:06:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-10-03 09:06:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 480 transitions. [2018-10-03 09:06:20,275 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 480 transitions. Word has length 338 [2018-10-03 09:06:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:20,275 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 480 transitions. [2018-10-03 09:06:20,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-03 09:06:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 480 transitions. [2018-10-03 09:06:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-03 09:06:20,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:20,277 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1] [2018-10-03 09:06:20,277 INFO L423 AbstractCegarLoop]: === Iteration 70 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:20,277 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:20,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1672421472, now seen corresponding path program 68 times [2018-10-03 09:06:20,277 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:20,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:20,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:20,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:20,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:21,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:21,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:21,599 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:21,678 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:21,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:21,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:24,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:24,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-10-03 09:06:24,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-03 09:06:24,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-03 09:06:24,648 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:24,648 INFO L87 Difference]: Start difference. First operand 344 states and 480 transitions. Second operand 140 states. [2018-10-03 09:06:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:25,952 INFO L93 Difference]: Finished difference Result 355 states and 495 transitions. [2018-10-03 09:06:25,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:06:25,952 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 343 [2018-10-03 09:06:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:25,954 INFO L225 Difference]: With dead ends: 355 [2018-10-03 09:06:25,954 INFO L226 Difference]: Without dead ends: 353 [2018-10-03 09:06:25,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.5s impTime 71 [2018-10-03 09:06:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-03 09:06:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2018-10-03 09:06:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-10-03 09:06:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2018-10-03 09:06:25,960 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 343 [2018-10-03 09:06:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:25,960 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2018-10-03 09:06:25,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-03 09:06:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2018-10-03 09:06:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-03 09:06:25,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:25,962 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1] [2018-10-03 09:06:25,962 INFO L423 AbstractCegarLoop]: === Iteration 71 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:25,962 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash -64859183, now seen corresponding path program 69 times [2018-10-03 09:06:25,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:25,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:25,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:25,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:25,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:27,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:27,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:27,151 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:27,342 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-03 09:06:27,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:27,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:29,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:29,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 141 [2018-10-03 09:06:29,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-03 09:06:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-03 09:06:29,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:29,989 INFO L87 Difference]: Start difference. First operand 349 states and 487 transitions. Second operand 142 states. [2018-10-03 09:06:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:31,347 INFO L93 Difference]: Finished difference Result 360 states and 502 transitions. [2018-10-03 09:06:31,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:06:31,347 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 348 [2018-10-03 09:06:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:31,349 INFO L225 Difference]: With dead ends: 360 [2018-10-03 09:06:31,349 INFO L226 Difference]: Without dead ends: 358 [2018-10-03 09:06:31,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.9s impTime 72 [2018-10-03 09:06:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-10-03 09:06:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2018-10-03 09:06:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-10-03 09:06:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 494 transitions. [2018-10-03 09:06:31,355 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 494 transitions. Word has length 348 [2018-10-03 09:06:31,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:31,356 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 494 transitions. [2018-10-03 09:06:31,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-03 09:06:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 494 transitions. [2018-10-03 09:06:31,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-03 09:06:31,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:31,357 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 1, 1, 1] [2018-10-03 09:06:31,357 INFO L423 AbstractCegarLoop]: === Iteration 72 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:31,357 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:31,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2072682240, now seen corresponding path program 70 times [2018-10-03 09:06:31,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:31,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:31,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:31,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:31,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:33,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:33,005 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:33,023 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:33,110 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:33,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:33,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:35,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:35,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-10-03 09:06:35,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-03 09:06:35,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-03 09:06:35,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:35,990 INFO L87 Difference]: Start difference. First operand 354 states and 494 transitions. Second operand 144 states. [2018-10-03 09:06:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:37,161 INFO L93 Difference]: Finished difference Result 365 states and 509 transitions. [2018-10-03 09:06:37,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:06:37,161 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 353 [2018-10-03 09:06:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:37,162 INFO L225 Difference]: With dead ends: 365 [2018-10-03 09:06:37,162 INFO L226 Difference]: Without dead ends: 363 [2018-10-03 09:06:37,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.7s impTime 73 [2018-10-03 09:06:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-03 09:06:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-10-03 09:06:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-03 09:06:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 501 transitions. [2018-10-03 09:06:37,169 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 501 transitions. Word has length 353 [2018-10-03 09:06:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:37,169 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 501 transitions. [2018-10-03 09:06:37,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-03 09:06:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 501 transitions. [2018-10-03 09:06:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-03 09:06:37,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:37,171 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 1, 1, 1] [2018-10-03 09:06:37,171 INFO L423 AbstractCegarLoop]: === Iteration 73 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:37,171 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1462961871, now seen corresponding path program 71 times [2018-10-03 09:06:37,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:37,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:37,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:37,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:37,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:38,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:38,995 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:39,001 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:39,180 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-03 09:06:39,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:39,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:42,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:42,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 145 [2018-10-03 09:06:42,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-03 09:06:42,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-03 09:06:42,221 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:42,221 INFO L87 Difference]: Start difference. First operand 359 states and 501 transitions. Second operand 146 states. [2018-10-03 09:06:43,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:43,694 INFO L93 Difference]: Finished difference Result 370 states and 516 transitions. [2018-10-03 09:06:43,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:06:43,694 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 358 [2018-10-03 09:06:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:43,696 INFO L225 Difference]: With dead ends: 370 [2018-10-03 09:06:43,696 INFO L226 Difference]: Without dead ends: 368 [2018-10-03 09:06:43,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 2.9s impTime 74 [2018-10-03 09:06:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-10-03 09:06:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2018-10-03 09:06:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-10-03 09:06:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 508 transitions. [2018-10-03 09:06:43,702 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 508 transitions. Word has length 358 [2018-10-03 09:06:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:43,702 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 508 transitions. [2018-10-03 09:06:43,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-03 09:06:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 508 transitions. [2018-10-03 09:06:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-03 09:06:43,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:43,704 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 1, 1, 1] [2018-10-03 09:06:43,704 INFO L423 AbstractCegarLoop]: === Iteration 74 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:43,704 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:43,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1552962976, now seen corresponding path program 72 times [2018-10-03 09:06:43,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:43,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:43,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:43,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:43,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:45,199 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:45,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:45,206 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:45,399 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-03 09:06:45,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:45,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:48,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:48,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-10-03 09:06:48,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-03 09:06:48,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-03 09:06:48,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:48,530 INFO L87 Difference]: Start difference. First operand 364 states and 508 transitions. Second operand 148 states. [2018-10-03 09:06:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:49,913 INFO L93 Difference]: Finished difference Result 375 states and 523 transitions. [2018-10-03 09:06:49,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:06:49,913 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 363 [2018-10-03 09:06:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:49,915 INFO L225 Difference]: With dead ends: 375 [2018-10-03 09:06:49,915 INFO L226 Difference]: Without dead ends: 373 [2018-10-03 09:06:49,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.7s impTime 75 [2018-10-03 09:06:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-03 09:06:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2018-10-03 09:06:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-10-03 09:06:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 515 transitions. [2018-10-03 09:06:49,922 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 515 transitions. Word has length 363 [2018-10-03 09:06:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:49,922 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 515 transitions. [2018-10-03 09:06:49,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-03 09:06:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 515 transitions. [2018-10-03 09:06:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-03 09:06:49,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:49,923 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 1, 1, 1] [2018-10-03 09:06:49,924 INFO L423 AbstractCegarLoop]: === Iteration 75 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:49,924 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1173382801, now seen corresponding path program 73 times [2018-10-03 09:06:49,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:49,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:49,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:49,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:49,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:51,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:51,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:51,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:51,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:54,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:54,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 149 [2018-10-03 09:06:54,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-03 09:06:54,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-03 09:06:54,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:54,007 INFO L87 Difference]: Start difference. First operand 369 states and 515 transitions. Second operand 150 states. [2018-10-03 09:06:55,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:55,396 INFO L93 Difference]: Finished difference Result 380 states and 530 transitions. [2018-10-03 09:06:55,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:06:55,396 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 368 [2018-10-03 09:06:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:55,397 INFO L225 Difference]: With dead ends: 380 [2018-10-03 09:06:55,397 INFO L226 Difference]: Without dead ends: 378 [2018-10-03 09:06:55,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.1s impTime 76 [2018-10-03 09:06:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-10-03 09:06:55,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2018-10-03 09:06:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-10-03 09:06:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 522 transitions. [2018-10-03 09:06:55,404 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 522 transitions. Word has length 368 [2018-10-03 09:06:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:55,405 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 522 transitions. [2018-10-03 09:06:55,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-03 09:06:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 522 transitions. [2018-10-03 09:06:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-03 09:06:55,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:55,406 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 1, 1, 1] [2018-10-03 09:06:55,407 INFO L423 AbstractCegarLoop]: === Iteration 76 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:55,407 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash 559563840, now seen corresponding path program 74 times [2018-10-03 09:06:55,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:55,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:55,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:55,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:55,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:06:56,273 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:06:56,279 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:06:56,279 INFO L202 PluginConnector]: Adding new model RailwayCrossing.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:06:56 BoogieIcfgContainer [2018-10-03 09:06:56,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:06:56,280 INFO L168 Benchmark]: Toolchain (without parser) took 240603.40 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 158.9 MB). Free memory was 1.5 GB in the beginning and 989.2 MB in the end (delta: 484.3 MB). Peak memory consumption was 643.2 MB. Max. memory is 7.1 GB. [2018-10-03 09:06:56,282 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:06:56,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:06:56,283 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:06:56,283 INFO L168 Benchmark]: RCFGBuilder took 401.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:06:56,284 INFO L168 Benchmark]: TraceAbstraction took 240120.87 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 158.9 MB). Free memory was 1.5 GB in the beginning and 989.2 MB in the end (delta: 463.2 MB). Peak memory consumption was 622.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:06:56,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.19 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 23.60 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 401.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240120.87 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 158.9 MB). Free memory was 1.5 GB in the beginning and 989.2 MB in the end (delta: 463.2 MB). Peak memory consumption was 622.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 39). Cancelled while BasicCegarLoop was analyzing trace of length 374 with TraceHistMax 74, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 372 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 240.0s OverallTime, 76 OverallIterations, 74 TraceHistogramMax, 38.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 613 SDtfs, 33301 SDslu, 23403 SDs, 0 SdLazy, 10873 SolverSat, 280 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16502 GetRequests, 10952 SyntacticMatches, 0 SemanticMatches, 5550 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 165.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 75 MinimizatonAttempts, 296 StatesRemovedByMinimization, 74 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 187.3s InterpolantComputationTime, 27458 NumberOfCodeBlocks, 27458 NumberOfCodeBlocksAsserted, 1528 NumberOfCheckSat, 27310 ConstructedInterpolants, 13578 QuantifiedInterpolants, 63665684 SizeOfPredicates, 2920 NumberOfNonLiveVariables, 25477 ConjunctsInSsa, 5694 ConjunctsInUnsatCore, 148 InterpolantComputations, 2 PerfectInterpolantSequences, 1/653643 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-06-56-298.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/RailwayCrossing.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-06-56-298.csv Completed graceful shutdown