java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:19:41,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:19:41,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:19:41,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:19:41,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:19:41,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:19:41,157 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:19:41,159 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:19:41,161 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:19:41,162 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:19:41,163 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 14:19:41,188 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 [2018-10-04 14:19:41,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:19:41,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:19:41,218 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:19:41,221 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:19:41,221 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:19:41,222 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:19:41,222 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:19:41,222 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:19:41,222 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:19:41,223 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:19:41,226 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:19:41,226 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:19:41,226 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:19:41,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:19:41,226 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:19:41,227 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:19:41,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:19:41,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:19:41,227 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:19:41,227 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:19:41,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:19:41,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:19:41,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:19:41,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:19:41,230 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:19:41,230 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:19:41,230 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:19:41,230 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:19:41,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:19:41,231 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:19:41,231 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:19:41,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:19:41,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:19:41,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:19:41,310 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:19:41,311 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:19:41,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-10-04 14:19:41,312 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-10-04 14:19:41,374 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:19:41,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:19:41,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:19:41,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:19:41,379 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:19:41,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,424 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 14:19:41,424 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 14:19:41,425 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 14:19:41,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:19:41,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:19:41,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:19:41,428 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:19:41,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/1) ... [2018-10-04 14:19:41,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:19:41,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:19:41,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:19:41,458 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:19:41,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (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 [2018-10-04 14:19:41,546 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-10-04 14:19:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-10-04 14:19:41,547 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-10-04 14:19:41,755 INFO L338 CfgBuilder]: Using library mode [2018-10-04 14:19:41,756 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:19:41 BoogieIcfgContainer [2018-10-04 14:19:41,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:19:41,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:19:41,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:19:41,761 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:19:41,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:19:41" (1/2) ... [2018-10-04 14:19:41,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea6650 and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:19:41, skipping insertion in model container [2018-10-04 14:19:41,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:19:41" (2/2) ... [2018-10-04 14:19:41,764 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-10-04 14:19:41,775 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:19:41,784 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:19:41,838 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:19:41,839 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:19:41,839 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:19:41,839 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:19:41,839 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:19:41,839 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:19:41,840 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:19:41,840 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:19:41,840 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:19:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-04 14:19:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 14:19:41,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:41,864 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 14:19:41,866 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:41,873 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:41,874 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-10-04 14:19:41,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:41,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:41,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:41,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:41,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:42,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:19:42,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:19:42,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:19:42,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:19:42,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:42,086 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-04 14:19:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:42,180 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-10-04 14:19:42,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:19:42,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 14:19:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:42,194 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:19:42,195 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:19:42,198 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 [2018-10-04 14:19:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:19:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-10-04 14:19:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:19:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-04 14:19:42,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-10-04 14:19:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:42,233 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-04 14:19:42,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:19:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-10-04 14:19:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:19:42,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:42,234 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 14:19:42,234 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:42,234 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:42,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-10-04 14:19:42,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:42,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:42,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:42,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:42,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:42,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:42,456 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 [2018-10-04 14:19:42,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:42,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:42,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:42,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-04 14:19:42,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:19:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:19:42,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:42,792 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-10-04 14:19:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:42,934 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-04 14:19:42,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:19:42,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 14:19:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:42,937 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:19:42,937 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 14:19:42,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 6 [2018-10-04 14:19:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 14:19:42,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-10-04 14:19:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 14:19:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-10-04 14:19:42,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-10-04 14:19:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:42,948 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-10-04 14:19:42,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:19:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-10-04 14:19:42,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:19:42,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:42,949 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 14:19:42,950 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:42,950 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:42,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-10-04 14:19:42,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:42,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:42,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:42,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:42,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:42,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:19:42,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:19:42,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:19:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:19:42,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:42,997 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-10-04 14:19:43,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:43,029 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-04 14:19:43,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:19:43,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-04 14:19:43,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:43,030 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:19:43,031 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 14:19:43,031 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 [2018-10-04 14:19:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 14:19:43,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 14:19:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 14:19:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-04 14:19:43,036 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-10-04 14:19:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:43,036 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-04 14:19:43,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:19:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-04 14:19:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 14:19:43,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:43,038 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-10-04 14:19:43,038 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:43,038 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-10-04 14:19:43,039 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:43,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:43,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:43,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:43,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:43,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:43,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:19:43,415 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:19:43,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:19:43,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:43,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:43,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:43,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-04 14:19:43,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:19:43,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:19:43,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:43,716 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-10-04 14:19:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:43,803 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-10-04 14:19:43,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:19:43,804 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-10-04 14:19:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:43,805 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:19:43,805 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 14:19:43,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 8 [2018-10-04 14:19:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 14:19:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-10-04 14:19:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 14:19:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-10-04 14:19:43,811 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-10-04 14:19:43,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:43,812 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-10-04 14:19:43,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:19:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-10-04 14:19:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 14:19:43,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:43,813 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-10-04 14:19:43,813 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:43,814 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:43,814 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-10-04 14:19:43,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:43,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:43,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:43,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:43,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:44,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:44,107 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 [2018-10-04 14:19:44,114 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:19:44,127 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 14:19:44,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:44,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:44,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:44,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-04 14:19:44,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:19:44,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:19:44,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:44,560 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-10-04 14:19:45,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:45,031 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-10-04 14:19:45,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:19:45,031 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-10-04 14:19:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:45,032 INFO L225 Difference]: With dead ends: 30 [2018-10-04 14:19:45,033 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 14:19:45,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 10 [2018-10-04 14:19:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 14:19:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-10-04 14:19:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 14:19:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-10-04 14:19:45,038 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-10-04 14:19:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:45,038 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-10-04 14:19:45,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:19:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-10-04 14:19:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 14:19:45,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:45,040 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-10-04 14:19:45,040 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:45,040 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-10-04 14:19:45,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:45,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:45,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:45,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:45,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:45,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:45,248 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 [2018-10-04 14:19:45,257 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:19:45,271 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:19:45,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:45,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:45,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:45,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-04 14:19:45,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:19:45,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:19:45,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:45,794 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-10-04 14:19:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:46,188 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-04 14:19:46,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:19:46,188 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-10-04 14:19:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:46,190 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:19:46,190 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:19:46,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 12 [2018-10-04 14:19:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:19:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-10-04 14:19:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 14:19:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-10-04 14:19:46,196 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-10-04 14:19:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:46,196 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-10-04 14:19:46,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:19:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-10-04 14:19:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 14:19:46,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:46,198 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-10-04 14:19:46,198 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:46,198 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-10-04 14:19:46,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:46,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:46,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:46,200 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:46,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:46,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:46,534 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 [2018-10-04 14:19:46,543 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:19:46,573 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 14:19:46,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:46,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:47,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:47,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-10-04 14:19:47,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:19:47,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:19:47,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:47,093 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-10-04 14:19:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:47,256 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-10-04 14:19:47,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:19:47,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-10-04 14:19:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:47,259 INFO L225 Difference]: With dead ends: 40 [2018-10-04 14:19:47,259 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 14:19:47,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 14 [2018-10-04 14:19:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 14:19:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-10-04 14:19:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 14:19:47,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-10-04 14:19:47,266 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-10-04 14:19:47,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:47,267 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-10-04 14:19:47,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:19:47,267 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-10-04 14:19:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 14:19:47,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:47,268 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-10-04 14:19:47,268 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:47,268 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:47,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-10-04 14:19:47,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:47,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:47,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:47,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:47,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:47,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:47,500 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 [2018-10-04 14:19:47,508 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:19:47,528 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:19:47,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:47,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:48,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:48,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-10-04 14:19:48,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:19:48,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:19:48,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:48,200 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-10-04 14:19:48,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:48,436 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-10-04 14:19:48,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:19:48,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-10-04 14:19:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:48,438 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:19:48,438 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 14:19:48,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 16 [2018-10-04 14:19:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 14:19:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-04 14:19:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 14:19:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-10-04 14:19:48,447 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-10-04 14:19:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:48,447 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-10-04 14:19:48,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:19:48,448 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-10-04 14:19:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 14:19:48,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:48,449 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-10-04 14:19:48,449 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:48,449 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-10-04 14:19:48,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:48,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:48,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:48,451 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:48,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:48,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:48,688 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 [2018-10-04 14:19:48,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:48,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:49,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:49,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-10-04 14:19:49,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:19:49,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:19:49,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:49,266 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-10-04 14:19:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:49,469 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-10-04 14:19:49,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:19:49,470 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-10-04 14:19:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:49,471 INFO L225 Difference]: With dead ends: 50 [2018-10-04 14:19:49,471 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 14:19:49,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 18 [2018-10-04 14:19:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 14:19:49,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-04 14:19:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 14:19:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-10-04 14:19:49,478 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-10-04 14:19:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:49,478 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-10-04 14:19:49,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:19:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-10-04 14:19:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 14:19:49,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:49,480 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-10-04 14:19:49,480 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:49,480 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:49,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-10-04 14:19:49,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:49,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:49,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:49,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:49,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:49,797 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 [2018-10-04 14:19:49,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:19:49,818 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:19:49,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:49,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:50,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:50,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-10-04 14:19:50,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:19:50,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:19:50,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:50,473 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-10-04 14:19:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:50,621 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-10-04 14:19:50,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:19:50,622 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-10-04 14:19:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:50,623 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:19:50,623 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:19:50,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 20 [2018-10-04 14:19:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:19:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-04 14:19:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 14:19:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-10-04 14:19:50,632 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-10-04 14:19:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:50,633 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-10-04 14:19:50,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:19:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-10-04 14:19:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 14:19:50,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:50,634 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-10-04 14:19:50,634 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:50,635 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:50,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-10-04 14:19:50,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:50,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:50,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:50,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:50,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:51,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:51,043 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 [2018-10-04 14:19:51,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:19:51,085 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 14:19:51,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:51,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:52,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:52,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-10-04 14:19:52,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:19:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:19:52,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:52,659 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-10-04 14:19:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:52,833 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-10-04 14:19:52,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:19:52,834 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-10-04 14:19:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:52,835 INFO L225 Difference]: With dead ends: 60 [2018-10-04 14:19:52,835 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 14:19:52,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.0s impTime 22 [2018-10-04 14:19:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 14:19:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-10-04 14:19:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 14:19:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-10-04 14:19:52,842 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-10-04 14:19:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:52,842 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-10-04 14:19:52,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:19:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-10-04 14:19:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 14:19:52,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:52,843 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-10-04 14:19:52,844 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:52,844 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:52,844 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-10-04 14:19:52,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:52,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:52,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:52,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:52,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:53,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:53,724 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 [2018-10-04 14:19:53,731 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:19:53,745 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:19:53,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:53,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:54,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:54,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-10-04 14:19:54,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:19:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:19:54,416 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:54,417 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-10-04 14:19:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:54,647 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-10-04 14:19:54,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:19:54,647 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-10-04 14:19:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:54,648 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:19:54,648 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 14:19:54,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 24 [2018-10-04 14:19:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 14:19:54,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-10-04 14:19:54,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 14:19:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-10-04 14:19:54,654 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-10-04 14:19:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:54,654 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-10-04 14:19:54,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:19:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-10-04 14:19:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 14:19:54,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:54,656 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-10-04 14:19:54,656 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:54,656 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:54,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-10-04 14:19:54,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:54,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:54,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:54,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:54,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:55,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:55,047 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 [2018-10-04 14:19:55,055 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:19:55,140 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 14:19:55,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:55,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:55,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:55,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-10-04 14:19:55,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:19:55,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:19:55,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:55,760 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-10-04 14:19:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:55,985 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-10-04 14:19:55,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:19:55,985 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-10-04 14:19:55,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:55,986 INFO L225 Difference]: With dead ends: 70 [2018-10-04 14:19:55,986 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 14:19:55,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 26 [2018-10-04 14:19:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 14:19:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-10-04 14:19:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 14:19:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-10-04 14:19:55,993 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-10-04 14:19:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:55,994 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-10-04 14:19:55,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:19:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-10-04 14:19:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 14:19:55,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:55,996 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-10-04 14:19:55,996 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:55,996 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-10-04 14:19:55,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:55,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:55,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:55,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:55,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:56,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:56,570 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 [2018-10-04 14:19:56,590 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:19:56,611 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:19:56,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:56,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:57,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:57,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-10-04 14:19:57,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:19:57,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:19:57,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:57,159 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-10-04 14:19:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:57,319 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-10-04 14:19:57,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:19:57,319 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-10-04 14:19:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:57,320 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:19:57,321 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 14:19:57,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 28 [2018-10-04 14:19:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 14:19:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-10-04 14:19:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 14:19:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-10-04 14:19:57,327 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-10-04 14:19:57,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:57,328 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-10-04 14:19:57,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:19:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-10-04 14:19:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 14:19:57,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:57,329 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-10-04 14:19:57,330 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:57,330 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:57,330 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-10-04 14:19:57,330 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:57,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:57,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:57,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:19:57,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:57,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:57,846 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 [2018-10-04 14:19:57,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:57,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:19:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:58,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:19:58,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-10-04 14:19:58,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:19:58,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:19:58,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:19:58,919 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-10-04 14:19:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:19:59,145 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-10-04 14:19:59,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:19:59,146 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-10-04 14:19:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:19:59,147 INFO L225 Difference]: With dead ends: 80 [2018-10-04 14:19:59,147 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 14:19:59,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 30 [2018-10-04 14:19:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 14:19:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-10-04 14:19:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 14:19:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-10-04 14:19:59,154 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-10-04 14:19:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:19:59,154 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-10-04 14:19:59,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:19:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-10-04 14:19:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 14:19:59,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:19:59,156 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-10-04 14:19:59,156 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:19:59,156 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:19:59,156 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-10-04 14:19:59,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:19:59,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:19:59,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:59,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:19:59,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:19:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:19:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:19:59,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:19:59,778 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 [2018-10-04 14:19:59,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:19:59,826 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:19:59,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:19:59,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:00,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:00,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-10-04 14:20:00,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:20:00,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:20:00,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:00,628 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-10-04 14:20:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:00,924 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-10-04 14:20:00,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:20:00,924 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-10-04 14:20:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:00,925 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:20:00,925 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 14:20:00,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 32 [2018-10-04 14:20:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 14:20:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-10-04 14:20:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 14:20:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-10-04 14:20:00,931 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-10-04 14:20:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:00,932 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-10-04 14:20:00,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:20:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-10-04 14:20:00,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 14:20:00,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:00,933 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-10-04 14:20:00,934 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:00,934 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:00,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-10-04 14:20:00,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:00,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:00,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:00,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:00,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:01,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:01,538 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 [2018-10-04 14:20:01,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:20:01,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 14:20:01,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:01,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:02,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:02,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-10-04 14:20:02,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:20:02,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:20:02,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:02,655 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-10-04 14:20:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:03,602 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-10-04 14:20:03,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:20:03,603 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-10-04 14:20:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:03,604 INFO L225 Difference]: With dead ends: 90 [2018-10-04 14:20:03,604 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 14:20:03,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 34 [2018-10-04 14:20:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 14:20:03,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-10-04 14:20:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 14:20:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-10-04 14:20:03,611 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-10-04 14:20:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:03,611 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-10-04 14:20:03,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:20:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-10-04 14:20:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 14:20:03,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:03,613 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-10-04 14:20:03,613 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:03,613 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:03,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-10-04 14:20:03,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:03,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:03,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:03,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:03,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:04,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:04,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:20:04,981 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:20:05,004 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:20:05,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:05,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:06,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:06,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-10-04 14:20:06,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:20:06,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:20:06,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:06,757 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-10-04 14:20:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:07,132 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-10-04 14:20:07,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:20:07,132 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-10-04 14:20:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:07,133 INFO L225 Difference]: With dead ends: 95 [2018-10-04 14:20:07,133 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:20:07,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.2s impTime 36 [2018-10-04 14:20:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:20:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-10-04 14:20:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 14:20:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-10-04 14:20:07,140 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-10-04 14:20:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:07,140 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-10-04 14:20:07,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:20:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-10-04 14:20:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 14:20:07,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:07,142 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-10-04 14:20:07,142 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:07,142 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:07,142 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-10-04 14:20:07,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:07,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:07,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:07,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:07,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:07,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:07,768 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 [2018-10-04 14:20:07,775 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:20:07,863 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 14:20:07,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:07,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:09,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:09,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-10-04 14:20:09,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:20:09,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:20:09,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:09,217 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-10-04 14:20:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:09,516 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-10-04 14:20:09,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:20:09,516 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-10-04 14:20:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:09,517 INFO L225 Difference]: With dead ends: 100 [2018-10-04 14:20:09,517 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 14:20:09,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 38 [2018-10-04 14:20:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 14:20:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-10-04 14:20:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 14:20:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-10-04 14:20:09,523 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-10-04 14:20:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:09,523 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-10-04 14:20:09,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:20:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-10-04 14:20:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 14:20:09,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:09,525 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-10-04 14:20:09,525 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:09,526 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:09,526 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-10-04 14:20:09,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:09,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:09,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:09,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:09,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:10,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:10,272 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 [2018-10-04 14:20:10,280 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:20:10,311 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:20:10,311 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:10,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:11,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:11,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-10-04 14:20:11,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 14:20:11,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 14:20:11,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:11,548 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-10-04 14:20:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:11,921 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-10-04 14:20:11,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:20:11,922 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-10-04 14:20:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:11,923 INFO L225 Difference]: With dead ends: 105 [2018-10-04 14:20:11,923 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 14:20:11,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 40 [2018-10-04 14:20:11,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 14:20:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-10-04 14:20:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 14:20:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-10-04 14:20:11,926 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-10-04 14:20:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:11,927 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-10-04 14:20:11,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 14:20:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-10-04 14:20:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 14:20:11,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:11,928 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-10-04 14:20:11,928 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:11,928 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:11,928 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-10-04 14:20:11,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:11,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:11,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:11,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:11,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:12,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:12,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:20:12,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:20:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:12,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:14,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:14,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-10-04 14:20:14,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 14:20:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 14:20:14,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:14,383 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-10-04 14:20:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:14,704 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-10-04 14:20:14,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:20:14,705 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-10-04 14:20:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:14,705 INFO L225 Difference]: With dead ends: 110 [2018-10-04 14:20:14,705 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 14:20:14,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 42 [2018-10-04 14:20:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 14:20:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-10-04 14:20:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 14:20:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-10-04 14:20:14,710 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-10-04 14:20:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:14,711 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-10-04 14:20:14,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 14:20:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-10-04 14:20:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 14:20:14,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:14,712 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-10-04 14:20:14,712 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:14,712 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:14,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-10-04 14:20:14,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:14,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:14,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:14,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:20:14,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:15,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:15,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:20:15,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:20:15,456 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:20:15,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:15,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:17,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:17,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-10-04 14:20:17,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 14:20:17,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 14:20:17,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:17,828 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-10-04 14:20:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:18,212 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-10-04 14:20:18,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:20:18,213 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-10-04 14:20:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:18,215 INFO L225 Difference]: With dead ends: 115 [2018-10-04 14:20:18,215 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 14:20:18,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 44 [2018-10-04 14:20:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 14:20:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-10-04 14:20:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 14:20:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-10-04 14:20:18,221 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-10-04 14:20:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:18,221 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-10-04 14:20:18,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 14:20:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-10-04 14:20:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 14:20:18,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:18,222 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-10-04 14:20:18,222 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:18,222 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-10-04 14:20:18,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:18,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:18,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:18,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:18,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:19,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:19,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:20:19,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:20:19,295 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 14:20:19,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:19,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:20,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:20,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-10-04 14:20:20,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 14:20:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 14:20:20,795 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:20,795 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-10-04 14:20:21,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:21,185 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-10-04 14:20:21,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:20:21,186 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-10-04 14:20:21,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:21,187 INFO L225 Difference]: With dead ends: 120 [2018-10-04 14:20:21,187 INFO L226 Difference]: Without dead ends: 118 [2018-10-04 14:20:21,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 46 [2018-10-04 14:20:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-04 14:20:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-10-04 14:20:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-04 14:20:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-10-04 14:20:21,192 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-10-04 14:20:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:21,193 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-10-04 14:20:21,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 14:20:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-10-04 14:20:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-04 14:20:21,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:21,194 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-10-04 14:20:21,194 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:21,194 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-10-04 14:20:21,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:21,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:21,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:21,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:21,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:22,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:22,249 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:20:22,256 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:20:22,288 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:20:22,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:22,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:24,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:24,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-10-04 14:20:24,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 14:20:24,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 14:20:24,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:24,032 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-10-04 14:20:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:24,538 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-10-04 14:20:24,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:20:24,538 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-10-04 14:20:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:24,539 INFO L225 Difference]: With dead ends: 125 [2018-10-04 14:20:24,539 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 14:20:24,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 48 [2018-10-04 14:20:24,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 14:20:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-10-04 14:20:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 14:20:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-10-04 14:20:24,545 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-10-04 14:20:24,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:24,545 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-10-04 14:20:24,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 14:20:24,545 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-10-04 14:20:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 14:20:24,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:24,546 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-10-04 14:20:24,546 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:24,546 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-10-04 14:20:24,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:24,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:24,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:24,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:24,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:25,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:25,645 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 [2018-10-04 14:20:25,653 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:20:25,690 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 14:20:25,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:25,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:27,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:27,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-10-04 14:20:27,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 14:20:27,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 14:20:27,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:27,381 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-10-04 14:20:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:27,826 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-10-04 14:20:27,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:20:27,826 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-10-04 14:20:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:27,827 INFO L225 Difference]: With dead ends: 130 [2018-10-04 14:20:27,827 INFO L226 Difference]: Without dead ends: 128 [2018-10-04 14:20:27,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 50 [2018-10-04 14:20:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-04 14:20:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-10-04 14:20:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-04 14:20:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-10-04 14:20:27,831 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-10-04 14:20:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:27,831 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-10-04 14:20:27,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 14:20:27,832 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-10-04 14:20:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-04 14:20:27,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:27,832 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-10-04 14:20:27,833 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:27,833 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-10-04 14:20:27,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:27,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:27,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:27,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:27,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:29,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:29,400 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 [2018-10-04 14:20:29,407 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:20:29,459 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:20:29,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:29,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:30,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:30,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-10-04 14:20:30,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 14:20:30,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 14:20:30,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:30,713 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-10-04 14:20:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:31,334 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-10-04 14:20:31,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:20:31,334 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-10-04 14:20:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:31,335 INFO L225 Difference]: With dead ends: 135 [2018-10-04 14:20:31,335 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 14:20:31,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.9s impTime 52 [2018-10-04 14:20:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 14:20:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-10-04 14:20:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 14:20:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-10-04 14:20:31,341 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-10-04 14:20:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:31,341 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-10-04 14:20:31,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 14:20:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-10-04 14:20:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 14:20:31,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:31,342 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-10-04 14:20:31,342 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:31,342 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-10-04 14:20:31,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:31,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:31,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:31,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:31,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:32,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:32,164 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 [2018-10-04 14:20:32,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:20:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:32,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:33,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:33,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-10-04 14:20:33,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 14:20:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 14:20:33,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:33,838 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-10-04 14:20:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:34,478 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-10-04 14:20:34,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:20:34,479 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-10-04 14:20:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:34,479 INFO L225 Difference]: With dead ends: 140 [2018-10-04 14:20:34,480 INFO L226 Difference]: Without dead ends: 138 [2018-10-04 14:20:34,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 54 [2018-10-04 14:20:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-04 14:20:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-10-04 14:20:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-04 14:20:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-10-04 14:20:34,485 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-10-04 14:20:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:34,485 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-10-04 14:20:34,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 14:20:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-10-04 14:20:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-04 14:20:34,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:34,486 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-10-04 14:20:34,486 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:34,486 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:34,487 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-10-04 14:20:34,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:34,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:34,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:34,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:20:34,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:35,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:35,891 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 [2018-10-04 14:20:35,901 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:20:35,931 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:20:35,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:35,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:38,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:38,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-10-04 14:20:38,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 14:20:38,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 14:20:38,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:38,480 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-10-04 14:20:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:39,284 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-10-04 14:20:39,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:20:39,284 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-10-04 14:20:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:39,285 INFO L225 Difference]: With dead ends: 145 [2018-10-04 14:20:39,285 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 14:20:39,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.0s impTime 56 [2018-10-04 14:20:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 14:20:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-10-04 14:20:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 14:20:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-10-04 14:20:39,290 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-10-04 14:20:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:39,290 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-10-04 14:20:39,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 14:20:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-10-04 14:20:39,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 14:20:39,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:39,291 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-10-04 14:20:39,291 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:39,291 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:39,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-10-04 14:20:39,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:39,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:39,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:39,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:39,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:40,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:40,452 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 [2018-10-04 14:20:40,459 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:20:40,504 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 14:20:40,504 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:40,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:42,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:42,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-10-04 14:20:42,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 14:20:42,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 14:20:42,153 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:42,153 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-10-04 14:20:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:42,648 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-10-04 14:20:42,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:20:42,649 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-10-04 14:20:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:42,650 INFO L225 Difference]: With dead ends: 150 [2018-10-04 14:20:42,650 INFO L226 Difference]: Without dead ends: 148 [2018-10-04 14:20:42,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 58 [2018-10-04 14:20:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-04 14:20:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-10-04 14:20:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-04 14:20:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-10-04 14:20:42,656 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-10-04 14:20:42,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:42,656 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-10-04 14:20:42,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 14:20:42,656 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-10-04 14:20:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-04 14:20:42,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:42,657 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-10-04 14:20:42,657 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:42,658 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-10-04 14:20:42,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:42,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:42,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:42,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:42,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:43,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:43,651 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 [2018-10-04 14:20:43,659 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:20:43,693 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:20:43,693 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:43,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:45,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:45,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-10-04 14:20:45,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-04 14:20:45,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-04 14:20:45,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:45,764 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-10-04 14:20:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:46,252 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-10-04 14:20:46,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:20:46,252 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-10-04 14:20:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:46,253 INFO L225 Difference]: With dead ends: 155 [2018-10-04 14:20:46,253 INFO L226 Difference]: Without dead ends: 153 [2018-10-04 14:20:46,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime 60 [2018-10-04 14:20:46,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-04 14:20:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-10-04 14:20:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 14:20:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-10-04 14:20:46,259 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-10-04 14:20:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:46,259 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-10-04 14:20:46,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-04 14:20:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-10-04 14:20:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 14:20:46,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:46,260 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-10-04 14:20:46,261 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:46,261 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-10-04 14:20:46,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:46,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:46,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:46,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:46,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:47,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:47,724 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 [2018-10-04 14:20:47,731 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:20:47,776 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 14:20:47,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:47,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:49,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:49,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-10-04 14:20:49,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-04 14:20:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-04 14:20:49,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:49,958 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-10-04 14:20:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:50,662 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-10-04 14:20:50,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:20:50,662 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-10-04 14:20:50,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:50,663 INFO L225 Difference]: With dead ends: 160 [2018-10-04 14:20:50,663 INFO L226 Difference]: Without dead ends: 158 [2018-10-04 14:20:50,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.8s impTime 62 [2018-10-04 14:20:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-04 14:20:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-10-04 14:20:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-04 14:20:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-10-04 14:20:50,669 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-10-04 14:20:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:50,670 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-10-04 14:20:50,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-04 14:20:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-10-04 14:20:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-04 14:20:50,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:50,671 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-10-04 14:20:50,671 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:50,671 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:50,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-10-04 14:20:50,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:50,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:50,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:52,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:52,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:20:52,223 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:20:52,274 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:20:52,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:20:52,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:20:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:55,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:20:55,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-10-04 14:20:55,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-04 14:20:55,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-04 14:20:55,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:20:55,084 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-10-04 14:20:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:20:55,754 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-10-04 14:20:55,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:20:55,754 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-10-04 14:20:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:20:55,755 INFO L225 Difference]: With dead ends: 165 [2018-10-04 14:20:55,755 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 14:20:55,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.4s impTime 64 [2018-10-04 14:20:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 14:20:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-10-04 14:20:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 14:20:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-10-04 14:20:55,761 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-10-04 14:20:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:20:55,762 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-10-04 14:20:55,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-04 14:20:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-10-04 14:20:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 14:20:55,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:20:55,763 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-10-04 14:20:55,763 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:20:55,763 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:20:55,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-10-04 14:20:55,764 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:20:55,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:20:55,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:55,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:20:55,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:20:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:20:57,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:20:57,531 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 [2018-10-04 14:20:57,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:20:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:20:57,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:00,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:00,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-10-04 14:21:00,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-04 14:21:00,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-04 14:21:00,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:00,559 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-10-04 14:21:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:01,278 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-10-04 14:21:01,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:21:01,278 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-10-04 14:21:01,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:01,279 INFO L225 Difference]: With dead ends: 170 [2018-10-04 14:21:01,279 INFO L226 Difference]: Without dead ends: 168 [2018-10-04 14:21:01,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time 3.8s impTime 66 [2018-10-04 14:21:01,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-04 14:21:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-10-04 14:21:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-04 14:21:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-10-04 14:21:01,286 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-10-04 14:21:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:01,286 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-10-04 14:21:01,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-04 14:21:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-10-04 14:21:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-04 14:21:01,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:01,287 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-10-04 14:21:01,287 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:01,288 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:01,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-10-04 14:21:01,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:01,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:01,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:01,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:21:01,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:04,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:04,203 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 [2018-10-04 14:21:04,210 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:21:04,248 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:21:04,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:04,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:07,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:07,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-10-04 14:21:07,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-04 14:21:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-04 14:21:07,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:07,279 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-10-04 14:21:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:08,000 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-10-04 14:21:08,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:21:08,001 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-10-04 14:21:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:08,002 INFO L225 Difference]: With dead ends: 175 [2018-10-04 14:21:08,002 INFO L226 Difference]: Without dead ends: 173 [2018-10-04 14:21:08,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time 4.7s impTime 68 [2018-10-04 14:21:08,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-04 14:21:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-10-04 14:21:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-04 14:21:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-10-04 14:21:08,009 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-10-04 14:21:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:08,009 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-10-04 14:21:08,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-04 14:21:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-10-04 14:21:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-04 14:21:08,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:08,011 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-10-04 14:21:08,011 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:08,011 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:08,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-10-04 14:21:08,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:08,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:08,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:08,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:08,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:09,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:09,989 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 [2018-10-04 14:21:09,997 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:21:10,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 14:21:10,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:10,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:12,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:12,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-10-04 14:21:12,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-04 14:21:12,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-04 14:21:12,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:12,597 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-10-04 14:21:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:13,260 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-10-04 14:21:13,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:21:13,262 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-10-04 14:21:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:13,264 INFO L225 Difference]: With dead ends: 180 [2018-10-04 14:21:13,264 INFO L226 Difference]: Without dead ends: 178 [2018-10-04 14:21:13,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.5s impTime 70 [2018-10-04 14:21:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-04 14:21:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-10-04 14:21:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-04 14:21:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-10-04 14:21:13,268 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-10-04 14:21:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:13,269 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-10-04 14:21:13,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-04 14:21:13,269 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-10-04 14:21:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-04 14:21:13,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:13,270 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-10-04 14:21:13,270 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:13,271 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:13,271 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-10-04 14:21:13,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:13,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:13,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:13,272 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:13,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:15,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:15,768 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 [2018-10-04 14:21:15,775 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:21:15,816 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:21:15,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:15,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:20,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:20,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-10-04 14:21:20,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-04 14:21:20,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-04 14:21:20,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:20,296 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-10-04 14:21:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:21,974 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-10-04 14:21:21,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:21:21,974 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-10-04 14:21:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:21,975 INFO L225 Difference]: With dead ends: 185 [2018-10-04 14:21:21,975 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 14:21:21,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6s Time 5.7s impTime 72 [2018-10-04 14:21:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 14:21:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-04 14:21:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 14:21:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-10-04 14:21:21,982 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-10-04 14:21:21,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:21,982 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-10-04 14:21:21,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-04 14:21:21,982 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-10-04 14:21:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 14:21:21,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:21,983 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-10-04 14:21:21,983 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:21,984 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:21,984 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-10-04 14:21:21,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:21,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:21,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:21,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:21,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:24,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:24,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:21:24,445 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:21:24,518 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 14:21:24,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:24,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:28,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:28,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-10-04 14:21:28,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-04 14:21:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-04 14:21:28,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:28,181 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-10-04 14:21:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:29,029 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-10-04 14:21:29,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 14:21:29,030 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-10-04 14:21:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:29,031 INFO L225 Difference]: With dead ends: 190 [2018-10-04 14:21:29,031 INFO L226 Difference]: Without dead ends: 188 [2018-10-04 14:21:29,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7s Time 5.1s impTime 74 [2018-10-04 14:21:29,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-04 14:21:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-10-04 14:21:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-04 14:21:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-10-04 14:21:29,037 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-10-04 14:21:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:29,038 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-10-04 14:21:29,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-04 14:21:29,038 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-10-04 14:21:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-04 14:21:29,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:29,039 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-10-04 14:21:29,039 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:29,039 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:29,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-10-04 14:21:29,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:29,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:29,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:29,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:29,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:31,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:31,656 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 [2018-10-04 14:21:31,664 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:21:31,724 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 14:21:31,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:31,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:36,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:36,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-10-04 14:21:36,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-04 14:21:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-04 14:21:36,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:36,228 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-10-04 14:21:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:37,086 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-10-04 14:21:37,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 14:21:37,087 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-10-04 14:21:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:37,088 INFO L225 Difference]: With dead ends: 195 [2018-10-04 14:21:37,088 INFO L226 Difference]: Without dead ends: 193 [2018-10-04 14:21:37,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s Time 5.9s impTime 76 [2018-10-04 14:21:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-04 14:21:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-10-04 14:21:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-04 14:21:37,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-10-04 14:21:37,094 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-10-04 14:21:37,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:37,094 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-10-04 14:21:37,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-04 14:21:37,094 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-10-04 14:21:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-04 14:21:37,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:37,095 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-10-04 14:21:37,095 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:37,095 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:37,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-10-04 14:21:37,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:37,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:37,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:37,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:37,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:38,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:38,894 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 [2018-10-04 14:21:38,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:21:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:38,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:41,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:41,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-10-04 14:21:41,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-04 14:21:41,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-04 14:21:41,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:41,773 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-10-04 14:21:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:42,591 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-10-04 14:21:42,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 14:21:42,591 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-10-04 14:21:42,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:42,592 INFO L225 Difference]: With dead ends: 200 [2018-10-04 14:21:42,592 INFO L226 Difference]: Without dead ends: 198 [2018-10-04 14:21:42,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s Time 3.5s impTime 78 [2018-10-04 14:21:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-04 14:21:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-10-04 14:21:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-04 14:21:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-10-04 14:21:42,599 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-10-04 14:21:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:42,599 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-10-04 14:21:42,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-04 14:21:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-10-04 14:21:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-04 14:21:42,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:42,600 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-10-04 14:21:42,601 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:42,601 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-10-04 14:21:42,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:42,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:42,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:42,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:21:42,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:45,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:45,297 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 [2018-10-04 14:21:45,304 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:21:45,357 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:21:45,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:45,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:49,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:49,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-10-04 14:21:49,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-04 14:21:49,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-04 14:21:49,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:49,498 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-10-04 14:21:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:50,481 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-10-04 14:21:50,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 14:21:50,481 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-10-04 14:21:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:50,482 INFO L225 Difference]: With dead ends: 205 [2018-10-04 14:21:50,483 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 14:21:50,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s Time 5.6s impTime 80 [2018-10-04 14:21:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 14:21:50,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-10-04 14:21:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 14:21:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-10-04 14:21:50,489 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-10-04 14:21:50,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:50,490 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-10-04 14:21:50,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-04 14:21:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-10-04 14:21:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 14:21:50,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:50,490 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-10-04 14:21:50,491 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:50,491 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:50,491 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-10-04 14:21:50,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:50,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:50,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:50,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:50,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:21:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:53,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:21:53,736 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 [2018-10-04 14:21:53,745 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:21:53,819 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 14:21:53,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:21:53,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:21:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:21:58,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:21:58,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-10-04 14:21:58,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-04 14:21:58,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-04 14:21:58,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:21:58,466 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-10-04 14:21:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:21:59,470 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-10-04 14:21:59,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 14:21:59,470 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-10-04 14:21:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:21:59,471 INFO L225 Difference]: With dead ends: 210 [2018-10-04 14:21:59,471 INFO L226 Difference]: Without dead ends: 208 [2018-10-04 14:21:59,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5s Time 6.5s impTime 82 [2018-10-04 14:21:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-04 14:21:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-10-04 14:21:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-04 14:21:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-10-04 14:21:59,475 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-10-04 14:21:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:21:59,475 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-10-04 14:21:59,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-04 14:21:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-10-04 14:21:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-04 14:21:59,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:21:59,476 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-10-04 14:21:59,477 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:21:59,477 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:21:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-10-04 14:21:59,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:21:59,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:21:59,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:59,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:21:59,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:21:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:02,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:22:02,353 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 14:22:02,362 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:22:02,409 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:22:02,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:22:02,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:22:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:06,824 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:22:06,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-10-04 14:22:06,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-04 14:22:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-04 14:22:06,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:22:06,826 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-10-04 14:22:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:22:07,889 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-10-04 14:22:07,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 14:22:07,890 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-10-04 14:22:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:22:07,891 INFO L225 Difference]: With dead ends: 215 [2018-10-04 14:22:07,891 INFO L226 Difference]: Without dead ends: 213 [2018-10-04 14:22:07,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9s Time 6.0s impTime 84 [2018-10-04 14:22:07,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-04 14:22:07,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-10-04 14:22:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-04 14:22:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-10-04 14:22:07,896 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-10-04 14:22:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:22:07,896 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-10-04 14:22:07,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-04 14:22:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-10-04 14:22:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-04 14:22:07,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:22:07,897 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-10-04 14:22:07,897 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:22:07,897 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:22:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-10-04 14:22:07,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:22:07,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:22:07,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:07,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:22:07,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:11,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:22:11,042 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 [2018-10-04 14:22:11,050 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:22:11,122 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 14:22:11,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:22:11,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:22:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:18,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:22:18,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-10-04 14:22:18,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-04 14:22:18,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-04 14:22:18,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:22:18,333 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. [2018-10-04 14:22:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:22:19,457 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2018-10-04 14:22:19,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 14:22:19,457 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 208 [2018-10-04 14:22:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:22:19,458 INFO L225 Difference]: With dead ends: 220 [2018-10-04 14:22:19,458 INFO L226 Difference]: Without dead ends: 218 [2018-10-04 14:22:19,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9s Time 8.8s impTime 86 [2018-10-04 14:22:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-04 14:22:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-10-04 14:22:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-04 14:22:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2018-10-04 14:22:19,465 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 208 [2018-10-04 14:22:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:22:19,466 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2018-10-04 14:22:19,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-04 14:22:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2018-10-04 14:22:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-04 14:22:19,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:22:19,467 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-10-04 14:22:19,467 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:22:19,467 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:22:19,468 INFO L82 PathProgramCache]: Analyzing trace with hash -638782368, now seen corresponding path program 42 times [2018-10-04 14:22:19,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:22:19,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:22:19,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:19,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:22:19,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:23,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:22:23,054 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 [2018-10-04 14:22:23,062 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:22:23,133 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 14:22:23,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:22:23,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:22:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:28,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:22:28,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2018-10-04 14:22:28,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-04 14:22:28,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-04 14:22:28,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:22:28,064 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand 172 states. [2018-10-04 14:22:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:22:29,244 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2018-10-04 14:22:29,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 14:22:29,244 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 213 [2018-10-04 14:22:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:22:29,245 INFO L225 Difference]: With dead ends: 225 [2018-10-04 14:22:29,245 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 14:22:29,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1s Time 7.2s impTime 88 [2018-10-04 14:22:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 14:22:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-10-04 14:22:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 14:22:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2018-10-04 14:22:29,252 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 213 [2018-10-04 14:22:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:22:29,252 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2018-10-04 14:22:29,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-04 14:22:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2018-10-04 14:22:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 14:22:29,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:22:29,254 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-10-04 14:22:29,254 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:22:29,254 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:22:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 372754796, now seen corresponding path program 43 times [2018-10-04 14:22:29,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:22:29,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:22:29,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:29,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:22:29,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:32,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:22:32,615 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 [2018-10-04 14:22:32,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:22:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:32,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:22:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:37,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:22:37,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2018-10-04 14:22:37,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-04 14:22:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-04 14:22:37,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:22:37,769 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand 176 states. [2018-10-04 14:22:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:22:39,020 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2018-10-04 14:22:39,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 14:22:39,021 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 218 [2018-10-04 14:22:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:22:39,022 INFO L225 Difference]: With dead ends: 230 [2018-10-04 14:22:39,022 INFO L226 Difference]: Without dead ends: 228 [2018-10-04 14:22:39,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0s Time 7.2s impTime 90 [2018-10-04 14:22:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-04 14:22:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-10-04 14:22:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-04 14:22:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2018-10-04 14:22:39,027 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 218 [2018-10-04 14:22:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:22:39,027 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2018-10-04 14:22:39,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-04 14:22:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2018-10-04 14:22:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-04 14:22:39,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:22:39,028 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-10-04 14:22:39,028 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:22:39,029 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:22:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2065417248, now seen corresponding path program 44 times [2018-10-04 14:22:39,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:22:39,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:22:39,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:39,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:22:39,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:41,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:22:41,255 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 [2018-10-04 14:22:41,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:22:41,314 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:22:41,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:22:41,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:22:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:46,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:22:46,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2018-10-04 14:22:46,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-04 14:22:46,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-04 14:22:46,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:22:46,584 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 180 states. [2018-10-04 14:22:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:22:47,834 INFO L93 Difference]: Finished difference Result 235 states and 281 transitions. [2018-10-04 14:22:47,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 14:22:47,834 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 223 [2018-10-04 14:22:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:22:47,835 INFO L225 Difference]: With dead ends: 235 [2018-10-04 14:22:47,835 INFO L226 Difference]: Without dead ends: 233 [2018-10-04 14:22:47,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0s Time 6.2s impTime 92 [2018-10-04 14:22:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-04 14:22:47,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-10-04 14:22:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-04 14:22:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2018-10-04 14:22:47,842 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 223 [2018-10-04 14:22:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:22:47,842 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2018-10-04 14:22:47,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-04 14:22:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2018-10-04 14:22:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-04 14:22:47,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:22:47,844 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-10-04 14:22:47,844 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:22:47,844 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:22:47,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1340001812, now seen corresponding path program 45 times [2018-10-04 14:22:47,845 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:22:47,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:22:47,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:47,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:22:47,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:22:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:51,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:22:51,218 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 [2018-10-04 14:22:51,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:22:51,302 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 14:22:51,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:22:51,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:22:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:22:55,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:22:55,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2018-10-04 14:22:55,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-04 14:22:55,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-04 14:22:55,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:22:55,682 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand 184 states. [2018-10-04 14:22:56,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:22:56,860 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-10-04 14:22:56,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 14:22:56,861 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 228 [2018-10-04 14:22:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:22:56,862 INFO L225 Difference]: With dead ends: 240 [2018-10-04 14:22:56,862 INFO L226 Difference]: Without dead ends: 238 [2018-10-04 14:22:56,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2s Time 6.4s impTime 94 [2018-10-04 14:22:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-04 14:22:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-10-04 14:22:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-04 14:22:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2018-10-04 14:22:56,869 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 228 [2018-10-04 14:22:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:22:56,870 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2018-10-04 14:22:56,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-04 14:22:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2018-10-04 14:22:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-04 14:22:56,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:22:56,871 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-10-04 14:22:56,871 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:22:56,872 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:22:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash 117973856, now seen corresponding path program 46 times [2018-10-04 14:22:56,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:22:56,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:22:56,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:56,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:22:56,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:22:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:00,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:00,620 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 [2018-10-04 14:23:00,627 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:23:00,699 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:23:00,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:00,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:06,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:06,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2018-10-04 14:23:06,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-04 14:23:06,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-04 14:23:06,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:06,611 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand 188 states. [2018-10-04 14:23:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:08,058 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2018-10-04 14:23:08,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 14:23:08,058 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 233 [2018-10-04 14:23:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:08,060 INFO L225 Difference]: With dead ends: 245 [2018-10-04 14:23:08,060 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 14:23:08,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1s Time 8.2s impTime 96 [2018-10-04 14:23:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 14:23:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-10-04 14:23:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-04 14:23:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2018-10-04 14:23:08,070 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 233 [2018-10-04 14:23:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:08,071 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2018-10-04 14:23:08,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-04 14:23:08,071 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2018-10-04 14:23:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-04 14:23:08,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:08,072 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-10-04 14:23:08,073 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:08,073 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:08,073 INFO L82 PathProgramCache]: Analyzing trace with hash 365034092, now seen corresponding path program 47 times [2018-10-04 14:23:08,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:08,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:08,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:08,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:08,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:10,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:10,602 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 [2018-10-04 14:23:10,609 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:23:10,695 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 14:23:10,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:10,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:14,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:14,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2018-10-04 14:23:14,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-04 14:23:14,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-04 14:23:14,647 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:14,647 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand 192 states. [2018-10-04 14:23:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:15,937 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2018-10-04 14:23:15,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 14:23:15,937 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 238 [2018-10-04 14:23:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:15,938 INFO L225 Difference]: With dead ends: 250 [2018-10-04 14:23:15,938 INFO L226 Difference]: Without dead ends: 248 [2018-10-04 14:23:15,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0s Time 5.1s impTime 98 [2018-10-04 14:23:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-04 14:23:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-10-04 14:23:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-04 14:23:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2018-10-04 14:23:15,944 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 238 [2018-10-04 14:23:15,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:15,945 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2018-10-04 14:23:15,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-04 14:23:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2018-10-04 14:23:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-04 14:23:15,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:15,946 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-10-04 14:23:15,946 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:15,946 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:15,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1225829088, now seen corresponding path program 48 times [2018-10-04 14:23:15,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:15,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:15,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:15,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:15,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:20,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:20,406 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 [2018-10-04 14:23:20,413 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:23:20,509 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 14:23:20,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:23:20,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:27,054 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:27,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2018-10-04 14:23:27,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-04 14:23:27,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-04 14:23:27,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:27,057 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand 196 states. [2018-10-04 14:23:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:28,592 INFO L93 Difference]: Finished difference Result 255 states and 305 transitions. [2018-10-04 14:23:28,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 14:23:28,593 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 243 [2018-10-04 14:23:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:28,594 INFO L225 Difference]: With dead ends: 255 [2018-10-04 14:23:28,594 INFO L226 Difference]: Without dead ends: 253 [2018-10-04 14:23:28,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5s Time 9.6s impTime 100 [2018-10-04 14:23:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-04 14:23:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-10-04 14:23:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-04 14:23:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2018-10-04 14:23:28,601 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 243 [2018-10-04 14:23:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:28,602 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2018-10-04 14:23:28,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-04 14:23:28,602 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2018-10-04 14:23:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-04 14:23:28,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:28,603 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-10-04 14:23:28,604 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:28,604 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:28,604 INFO L82 PathProgramCache]: Analyzing trace with hash 291644140, now seen corresponding path program 49 times [2018-10-04 14:23:28,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:28,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:28,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:28,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:23:28,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:32,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 14:23:32,138 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 [2018-10-04 14:23:32,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:23:32,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:23:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:23:38,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 14:23:38,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2018-10-04 14:23:38,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-04 14:23:38,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-04 14:23:38,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:23:38,850 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand 200 states. [2018-10-04 14:23:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:23:40,511 INFO L93 Difference]: Finished difference Result 260 states and 311 transitions. [2018-10-04 14:23:40,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 14:23:40,512 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 248 [2018-10-04 14:23:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:23:40,513 INFO L225 Difference]: With dead ends: 260 [2018-10-04 14:23:40,513 INFO L226 Difference]: Without dead ends: 258 [2018-10-04 14:23:40,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6s Time 8.8s impTime 102 [2018-10-04 14:23:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-04 14:23:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-10-04 14:23:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-10-04 14:23:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 304 transitions. [2018-10-04 14:23:40,521 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 304 transitions. Word has length 248 [2018-10-04 14:23:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:23:40,521 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 304 transitions. [2018-10-04 14:23:40,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-04 14:23:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 304 transitions. [2018-10-04 14:23:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-04 14:23:40,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:23:40,523 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-10-04 14:23:40,523 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:23:40,523 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:23:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1380593056, now seen corresponding path program 50 times [2018-10-04 14:23:40,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:23:40,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:23:40,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:40,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:23:40,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:23:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-04 14:23:43,819 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 14:23:43,824 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 14:23:43,824 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 02:23:43 BoogieIcfgContainer [2018-10-04 14:23:43,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 14:23:43,825 INFO L168 Benchmark]: Toolchain (without parser) took 242449.45 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -96.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 333.2 MB). Peak memory consumption was 236.8 MB. Max. memory is 7.1 GB. [2018-10-04 14:23:43,827 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:23:43,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:23:43,828 INFO L168 Benchmark]: Boogie Preprocessor took 29.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 14:23:43,828 INFO L168 Benchmark]: RCFGBuilder took 298.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 14:23:43,829 INFO L168 Benchmark]: TraceAbstraction took 242067.22 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -96.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 312.1 MB). Peak memory consumption was 215.6 MB. Max. memory is 7.1 GB. [2018-10-04 14:23:43,833 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 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 298.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242067.22 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -96.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 312.1 MB). Peak memory consumption was 215.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 44). Cancelled while BasicCegarLoop was analyzing trace of length 254 with TraceHistMax 50, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 252 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 241.9s OverallTime, 52 OverallIterations, 50 TraceHistogramMax, 33.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 515 SDtfs, 16987 SDslu, 14992 SDs, 0 SdLazy, 15048 SolverSat, 3117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8775 GetRequests, 3775 SyntacticMatches, 0 SemanticMatches, 5000 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 189.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 51 MinimizatonAttempts, 201 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 199.2s InterpolantComputationTime, 12555 NumberOfCodeBlocks, 12555 NumberOfCodeBlocksAsserted, 732 NumberOfCheckSat, 12455 ConstructedInterpolants, 6174 QuantifiedInterpolants, 20383669 SizeOfPredicates, 1372 NumberOfNonLiveVariables, 10584 ConjunctsInSsa, 2646 ConjunctsInUnsatCore, 100 InterpolantComputations, 2 PerfectInterpolantSequences, 1/198451 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-23-43-847.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_14-23-43-847.csv Completed graceful shutdown