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.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 23:06:06,152 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 23:06:06,154 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 23:06:06,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 23:06:06,166 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 23:06:06,168 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 23:06:06,169 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 23:06:06,171 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 23:06:06,173 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 23:06:06,174 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 23:06:06,175 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 23:06:06,211 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 23:06:06,230 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 23:06:06,230 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 23:06:06,231 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 23:06:06,231 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 23:06:06,232 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 23:06:06,232 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 23:06:06,232 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 23:06:06,238 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 23:06:06,238 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 23:06:06,238 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 23:06:06,238 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 23:06:06,238 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 23:06:06,239 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 23:06:06,239 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 23:06:06,239 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 23:06:06,239 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 23:06:06,239 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 23:06:06,240 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 23:06:06,240 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 23:06:06,240 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 23:06:06,240 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 23:06:06,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 23:06:06,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 23:06:06,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 23:06:06,242 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 23:06:06,242 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 23:06:06,243 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 23:06:06,243 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 23:06:06,243 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 23:06:06,243 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 23:06:06,302 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 23:06:06,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 23:06:06,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 23:06:06,326 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 23:06:06,327 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 23:06:06,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-09-30 23:06:06,329 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-09-30 23:06:06,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 23:06:06,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 23:06:06,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 23:06:06,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 23:06:06,390 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 23:06:06,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,426 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 23:06:06,426 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 23:06:06,426 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 23:06:06,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 23:06:06,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 23:06:06,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 23:06:06,430 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 23:06:06,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... [2018-09-30 23:06:06,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 23:06:06,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 23:06:06,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 23:06:06,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 23:06:06,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 23:06:06,540 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-30 23:06:06,540 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-30 23:06:06,541 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-30 23:06:06,856 INFO L345 CfgBuilder]: Using library mode [2018-09-30 23:06:06,856 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 11:06:06 BoogieIcfgContainer [2018-09-30 23:06:06,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 23:06:06,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 23:06:06,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 23:06:06,862 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 23:06:06,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 11:06:06" (1/2) ... [2018-09-30 23:06:06,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ff1fdb and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 11:06:06, skipping insertion in model container [2018-09-30 23:06:06,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 11:06:06" (2/2) ... [2018-09-30 23:06:06,866 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-09-30 23:06:06,878 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 23:06:06,887 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 23:06:06,942 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 23:06:06,943 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 23:06:06,943 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 23:06:06,943 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 23:06:06,943 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 23:06:06,943 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 23:06:06,944 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 23:06:06,944 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 23:06:06,944 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 23:06:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 23:06:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 23:06:06,969 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:06,972 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 23:06:06,974 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:06,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:06,982 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-09-30 23:06:06,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:06,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:07,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:07,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:07,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:07,127 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 23:06:07,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 23:06:07,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 23:06:07,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 23:06:07,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 23:06:07,151 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 23:06:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:07,213 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-09-30 23:06:07,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 23:06:07,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 23:06:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:07,227 INFO L225 Difference]: With dead ends: 19 [2018-09-30 23:06:07,228 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 23:06:07,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 23:06:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 23:06:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-30 23:06:07,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 23:06:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-30 23:06:07,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-09-30 23:06:07,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:07,269 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-30 23:06:07,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 23:06:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-30 23:06:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 23:06:07,270 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:07,270 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 23:06:07,270 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:07,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:07,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-09-30 23:06:07,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:07,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:07,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:07,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:07,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:07,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:07,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:07,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:07,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:07,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:07,819 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-30 23:06:07,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 23:06:07,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 23:06:07,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-30 23:06:07,821 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-09-30 23:06:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:07,920 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 23:06:07,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 23:06:07,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 23:06:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:07,922 INFO L225 Difference]: With dead ends: 21 [2018-09-30 23:06:07,922 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 23:06:07,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-30 23:06:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 23:06:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-09-30 23:06:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 23:06:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-30 23:06:07,928 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-30 23:06:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:07,929 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-30 23:06:07,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 23:06:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-30 23:06:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 23:06:07,930 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:07,930 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 23:06:07,930 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:07,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:07,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-09-30 23:06:07,931 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:07,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:07,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:07,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:07,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:07,988 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 23:06:07,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 23:06:07,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 23:06:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 23:06:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 23:06:07,990 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-09-30 23:06:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:08,008 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 23:06:08,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 23:06:08,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-30 23:06:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:08,009 INFO L225 Difference]: With dead ends: 21 [2018-09-30 23:06:08,010 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 23:06:08,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 23:06:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 23:06:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 23:06:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 23:06:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-30 23:06:08,019 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-09-30 23:06:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:08,019 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-30 23:06:08,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 23:06:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-30 23:06:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 23:06:08,020 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:08,021 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-30 23:06:08,021 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:08,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:08,022 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-09-30 23:06:08,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:08,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:08,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:08,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:08,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:08,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:08,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:08,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:06:08,388 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:06:08,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:08,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:08,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:08,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-30 23:06:08,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 23:06:08,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 23:06:08,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-30 23:06:08,618 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-09-30 23:06:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:08,839 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-30 23:06:08,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 23:06:08,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-09-30 23:06:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:08,840 INFO L225 Difference]: With dead ends: 25 [2018-09-30 23:06:08,842 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 23:06:08,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-30 23:06:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 23:06:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-30 23:06:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 23:06:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-09-30 23:06:08,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-09-30 23:06:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:08,852 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-09-30 23:06:08,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 23:06:08,852 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-09-30 23:06:08,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 23:06:08,853 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:08,854 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-30 23:06:08,855 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:08,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-09-30 23:06:08,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:08,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:08,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:08,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:08,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:09,015 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:09,015 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:09,026 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:06:09,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 23:06:09,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:09,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:09,402 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-30 23:06:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:09,654 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:09,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-30 23:06:09,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 23:06:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 23:06:09,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-09-30 23:06:09,656 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-09-30 23:06:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:09,797 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-30 23:06:09,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 23:06:09,800 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 23:06:09,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:09,801 INFO L225 Difference]: With dead ends: 30 [2018-09-30 23:06:09,801 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 23:06:09,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-09-30 23:06:09,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 23:06:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-30 23:06:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 23:06:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-09-30 23:06:09,809 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-09-30 23:06:09,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:09,809 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-09-30 23:06:09,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 23:06:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-09-30 23:06:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 23:06:09,811 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:09,812 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-30 23:06:09,813 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:09,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-09-30 23:06:09,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:09,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:09,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:09,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:09,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:09,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:09,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:10,005 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:06:10,017 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:06:10,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:10,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:10,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:10,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 23:06:10,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 23:06:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 23:06:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-30 23:06:10,388 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-09-30 23:06:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:10,723 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-30 23:06:10,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 23:06:10,725 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-09-30 23:06:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:10,726 INFO L225 Difference]: With dead ends: 35 [2018-09-30 23:06:10,726 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 23:06:10,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-30 23:06:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 23:06:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-30 23:06:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 23:06:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-09-30 23:06:10,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-09-30 23:06:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:10,739 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-09-30 23:06:10,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 23:06:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-09-30 23:06:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 23:06:10,742 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:10,742 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-30 23:06:10,742 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:10,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:10,743 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-09-30 23:06:10,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:10,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:10,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:10,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:10,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:11,067 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:11,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:11,076 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:06:11,093 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 23:06:11,094 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:11,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:11,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:11,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-30 23:06:11,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 23:06:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 23:06:11,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-09-30 23:06:11,689 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-09-30 23:06:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:11,837 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-09-30 23:06:11,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 23:06:11,838 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-09-30 23:06:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:11,840 INFO L225 Difference]: With dead ends: 40 [2018-09-30 23:06:11,840 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 23:06:11,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-09-30 23:06:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 23:06:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-30 23:06:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 23:06:11,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-30 23:06:11,848 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-09-30 23:06:11,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:11,848 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-30 23:06:11,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 23:06:11,848 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-30 23:06:11,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 23:06:11,849 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:11,850 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-30 23:06:11,850 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:11,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:11,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-09-30 23:06:11,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:11,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:11,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:11,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:11,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:12,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:12,087 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:12,099 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:06:12,116 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 23:06:12,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:12,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:12,776 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:12,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-30 23:06:12,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 23:06:12,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 23:06:12,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-09-30 23:06:12,778 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-09-30 23:06:12,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:12,989 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-09-30 23:06:12,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 23:06:12,992 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-09-30 23:06:12,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:12,993 INFO L225 Difference]: With dead ends: 45 [2018-09-30 23:06:12,993 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 23:06:12,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-09-30 23:06:12,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 23:06:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-30 23:06:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 23:06:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-09-30 23:06:13,001 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-09-30 23:06:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:13,001 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-09-30 23:06:13,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 23:06:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-09-30 23:06:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 23:06:13,003 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:13,003 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-30 23:06:13,003 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:13,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-09-30 23:06:13,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:13,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:13,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:13,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:13,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:13,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:13,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:13,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:13,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:13,940 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:13,941 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-30 23:06:13,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 23:06:13,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 23:06:13,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2018-09-30 23:06:13,942 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-09-30 23:06:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:14,111 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-09-30 23:06:14,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 23:06:14,112 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-09-30 23:06:14,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:14,113 INFO L225 Difference]: With dead ends: 50 [2018-09-30 23:06:14,113 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 23:06:14,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2018-09-30 23:06:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 23:06:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-30 23:06:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 23:06:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-30 23:06:14,120 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-09-30 23:06:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:14,121 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-30 23:06:14,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 23:06:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-30 23:06:14,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 23:06:14,122 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:14,122 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-30 23:06:14,122 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:14,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:14,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-09-30 23:06:14,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:14,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:14,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:14,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:14,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:14,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:14,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:14,426 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:06:14,448 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:06:14,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:14,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:15,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:15,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-30 23:06:15,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 23:06:15,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 23:06:15,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 23:06:15,031 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-09-30 23:06:15,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:15,287 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-09-30 23:06:15,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 23:06:15,288 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-09-30 23:06:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:15,289 INFO L225 Difference]: With dead ends: 55 [2018-09-30 23:06:15,289 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 23:06:15,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 23:06:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 23:06:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-30 23:06:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 23:06:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-09-30 23:06:15,296 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-09-30 23:06:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:15,296 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-09-30 23:06:15,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 23:06:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-09-30 23:06:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 23:06:15,297 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:15,298 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-30 23:06:15,298 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:15,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-09-30 23:06:15,298 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:15,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:15,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:15,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:15,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:15,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:15,563 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:15,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:06:15,594 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 23:06:15,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:15,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:16,729 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:16,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-30 23:06:16,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 23:06:16,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 23:06:16,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 23:06:16,730 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-09-30 23:06:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:16,992 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-09-30 23:06:16,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 23:06:16,993 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-09-30 23:06:16,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:16,994 INFO L225 Difference]: With dead ends: 60 [2018-09-30 23:06:16,994 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 23:06:16,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 23:06:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 23:06:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-30 23:06:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 23:06:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-09-30 23:06:17,000 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-09-30 23:06:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:17,001 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-09-30 23:06:17,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 23:06:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-09-30 23:06:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 23:06:17,002 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:17,002 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-30 23:06:17,002 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:17,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-09-30 23:06:17,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:17,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:17,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:17,004 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:17,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:17,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:17,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:17,478 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:06:17,513 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:06:17,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:17,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:18,434 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:18,434 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-30 23:06:18,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 23:06:18,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 23:06:18,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 23:06:18,437 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-09-30 23:06:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:18,776 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-30 23:06:18,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 23:06:18,776 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-09-30 23:06:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:18,777 INFO L225 Difference]: With dead ends: 65 [2018-09-30 23:06:18,777 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 23:06:18,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 23:06:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 23:06:18,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-30 23:06:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 23:06:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-09-30 23:06:18,794 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-09-30 23:06:18,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:18,795 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-09-30 23:06:18,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 23:06:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-09-30 23:06:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 23:06:18,796 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:18,796 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-30 23:06:18,796 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:18,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:18,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-09-30 23:06:18,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:18,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:18,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:18,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:18,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:19,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:19,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:19,175 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:06:19,198 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 23:06:19,198 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:19,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:20,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:20,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-30 23:06:20,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 23:06:20,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 23:06:20,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 23:06:20,235 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-09-30 23:06:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:20,459 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-09-30 23:06:20,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 23:06:20,460 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-09-30 23:06:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:20,461 INFO L225 Difference]: With dead ends: 70 [2018-09-30 23:06:20,461 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 23:06:20,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 23:06:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 23:06:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-30 23:06:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 23:06:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-09-30 23:06:20,470 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-09-30 23:06:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:20,470 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-09-30 23:06:20,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 23:06:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-09-30 23:06:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 23:06:20,471 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:20,471 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-30 23:06:20,472 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:20,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-09-30 23:06:20,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:20,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:20,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:20,473 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:20,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:20,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:20,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:20,972 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:06:20,993 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 23:06:20,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:20,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:22,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:22,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-30 23:06:22,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 23:06:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 23:06:22,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 23:06:22,157 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-09-30 23:06:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:22,399 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-09-30 23:06:22,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 23:06:22,400 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-09-30 23:06:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:22,400 INFO L225 Difference]: With dead ends: 75 [2018-09-30 23:06:22,401 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 23:06:22,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 23:06:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 23:06:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-30 23:06:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 23:06:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-09-30 23:06:22,407 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-09-30 23:06:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:22,408 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-09-30 23:06:22,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 23:06:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-09-30 23:06:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 23:06:22,409 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:22,409 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-30 23:06:22,409 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:22,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:22,410 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-09-30 23:06:22,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:22,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:22,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:22,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:22,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:23,050 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:23,050 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:23,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:23,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:24,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:24,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-30 23:06:24,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 23:06:24,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 23:06:24,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=2229, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 23:06:24,281 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-09-30 23:06:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:24,505 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-09-30 23:06:24,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 23:06:24,506 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-09-30 23:06:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:24,507 INFO L225 Difference]: With dead ends: 80 [2018-09-30 23:06:24,507 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 23:06:24,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=851, Invalid=2229, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 23:06:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 23:06:24,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-30 23:06:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 23:06:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-09-30 23:06:24,515 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-09-30 23:06:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:24,515 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-09-30 23:06:24,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 23:06:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-09-30 23:06:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 23:06:24,516 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:24,516 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-30 23:06:24,516 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:24,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:24,517 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-09-30 23:06:24,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:24,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:24,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:24,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:24,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:24,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:24,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:25,014 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:06:25,062 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:06:25,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:25,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:26,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:26,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-30 23:06:26,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 23:06:26,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 23:06:26,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=972, Invalid=2568, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 23:06:26,026 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-09-30 23:06:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:26,300 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-09-30 23:06:26,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 23:06:26,300 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-09-30 23:06:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:26,301 INFO L225 Difference]: With dead ends: 85 [2018-09-30 23:06:26,301 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 23:06:26,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=972, Invalid=2568, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 23:06:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 23:06:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-30 23:06:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 23:06:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-09-30 23:06:26,308 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-09-30 23:06:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:26,309 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-09-30 23:06:26,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 23:06:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-09-30 23:06:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 23:06:26,310 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:26,310 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-30 23:06:26,310 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:26,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:26,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-09-30 23:06:26,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:26,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:26,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:26,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:26,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:26,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:26,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:26,813 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:06:26,838 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 23:06:26,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:26,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:27,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:27,912 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-30 23:06:27,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 23:06:27,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 23:06:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 23:06:27,914 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-09-30 23:06:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:28,345 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-30 23:06:28,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 23:06:28,352 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-09-30 23:06:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:28,353 INFO L225 Difference]: With dead ends: 90 [2018-09-30 23:06:28,353 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 23:06:28,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2129 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 23:06:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 23:06:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-30 23:06:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 23:06:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-09-30 23:06:28,359 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-09-30 23:06:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:28,360 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-09-30 23:06:28,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 23:06:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-09-30 23:06:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 23:06:28,361 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:28,361 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-30 23:06:28,361 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:28,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:28,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-09-30 23:06:28,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:28,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:28,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:28,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:28,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:28,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:28,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:28,870 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:06:28,893 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:06:28,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:28,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:30,119 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:30,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-30 23:06:30,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 23:06:30,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 23:06:30,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=3318, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 23:06:30,121 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-09-30 23:06:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:30,554 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-09-30 23:06:30,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 23:06:30,555 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-09-30 23:06:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:30,556 INFO L225 Difference]: With dead ends: 95 [2018-09-30 23:06:30,556 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 23:06:30,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2423 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1238, Invalid=3318, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 23:06:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 23:06:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-30 23:06:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 23:06:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-09-30 23:06:30,563 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-09-30 23:06:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:30,564 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-09-30 23:06:30,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 23:06:30,564 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-09-30 23:06:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 23:06:30,565 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:30,565 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-30 23:06:30,565 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:30,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:30,566 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-09-30 23:06:30,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:30,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:30,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:30,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:30,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:32,079 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:32,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:32,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:32,089 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:06:32,115 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 23:06:32,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:32,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:33,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:33,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-30 23:06:33,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 23:06:33,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 23:06:33,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=3729, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 23:06:33,444 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-09-30 23:06:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:33,727 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-09-30 23:06:33,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 23:06:33,728 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-09-30 23:06:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:33,729 INFO L225 Difference]: With dead ends: 100 [2018-09-30 23:06:33,729 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 23:06:33,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1383, Invalid=3729, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 23:06:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 23:06:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-30 23:06:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 23:06:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-09-30 23:06:33,734 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-09-30 23:06:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:33,735 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-09-30 23:06:33,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 23:06:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-09-30 23:06:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 23:06:33,736 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:33,736 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-30 23:06:33,736 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:33,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:33,737 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-09-30 23:06:33,737 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:33,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:33,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:33,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:33,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:34,407 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:34,407 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:34,415 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:06:34,475 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 23:06:34,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:34,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:35,774 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:35,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:35,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-30 23:06:35,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 23:06:35,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 23:06:35,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1536, Invalid=4164, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 23:06:35,797 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-09-30 23:06:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:36,030 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-09-30 23:06:36,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 23:06:36,030 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-09-30 23:06:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:36,031 INFO L225 Difference]: With dead ends: 105 [2018-09-30 23:06:36,031 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 23:06:36,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1536, Invalid=4164, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 23:06:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 23:06:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-30 23:06:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 23:06:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-09-30 23:06:36,036 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-09-30 23:06:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:36,036 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-09-30 23:06:36,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 23:06:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-09-30 23:06:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 23:06:36,037 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:36,037 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-30 23:06:36,037 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:36,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:36,037 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-09-30 23:06:36,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:36,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:36,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:36,038 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:36,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:37,050 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:37,050 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:37,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:37,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:38,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:38,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-30 23:06:38,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 23:06:38,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 23:06:38,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1697, Invalid=4623, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 23:06:38,627 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-09-30 23:06:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:38,933 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-09-30 23:06:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 23:06:38,934 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-09-30 23:06:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:38,935 INFO L225 Difference]: With dead ends: 110 [2018-09-30 23:06:38,935 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 23:06:38,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3419 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1697, Invalid=4623, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 23:06:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 23:06:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-30 23:06:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 23:06:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-09-30 23:06:38,941 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-09-30 23:06:38,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:38,941 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-09-30 23:06:38,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 23:06:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-09-30 23:06:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 23:06:38,942 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:38,942 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-30 23:06:38,943 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:38,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:38,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-09-30 23:06:38,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:38,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:38,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:38,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:38,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:39,665 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:39,665 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:39,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:39,674 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:06:39,698 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:06:39,698 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:39,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:42,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:42,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-30 23:06:42,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 23:06:42,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 23:06:42,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1866, Invalid=5106, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 23:06:42,426 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-09-30 23:06:42,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:42,728 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-30 23:06:42,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 23:06:42,730 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-09-30 23:06:42,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:42,731 INFO L225 Difference]: With dead ends: 115 [2018-09-30 23:06:42,731 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 23:06:42,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1866, Invalid=5106, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 23:06:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 23:06:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-30 23:06:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 23:06:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-09-30 23:06:42,738 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-09-30 23:06:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:42,738 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-09-30 23:06:42,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 23:06:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-09-30 23:06:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 23:06:42,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:42,739 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-30 23:06:42,740 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:42,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-09-30 23:06:42,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:42,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:42,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:42,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:42,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:43,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:43,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:43,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:06:43,867 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 23:06:43,867 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:43,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:45,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:45,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-30 23:06:45,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 23:06:45,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 23:06:45,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2043, Invalid=5613, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 23:06:45,287 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-09-30 23:06:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:45,674 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-09-30 23:06:45,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 23:06:45,674 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-09-30 23:06:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:45,676 INFO L225 Difference]: With dead ends: 120 [2018-09-30 23:06:45,676 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 23:06:45,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4178 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2043, Invalid=5613, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 23:06:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 23:06:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-30 23:06:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 23:06:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-09-30 23:06:45,681 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-09-30 23:06:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:45,682 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-09-30 23:06:45,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 23:06:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-09-30 23:06:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 23:06:45,683 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:45,683 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-30 23:06:45,683 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:45,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:45,683 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-09-30 23:06:45,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:45,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:45,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:45,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:45,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:46,703 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:46,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:46,712 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:06:46,737 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:06:46,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:46,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:48,443 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:48,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-30 23:06:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 23:06:48,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 23:06:48,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2228, Invalid=6144, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 23:06:48,445 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-09-30 23:06:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:48,768 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-09-30 23:06:48,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 23:06:48,769 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-09-30 23:06:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:48,770 INFO L225 Difference]: With dead ends: 125 [2018-09-30 23:06:48,770 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 23:06:48,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4586 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2228, Invalid=6144, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 23:06:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 23:06:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-30 23:06:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 23:06:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-09-30 23:06:48,776 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-09-30 23:06:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:48,777 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-09-30 23:06:48,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 23:06:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-09-30 23:06:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 23:06:48,777 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:48,778 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-30 23:06:48,778 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:48,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:48,778 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-09-30 23:06:48,778 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:48,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:48,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:48,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:48,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:49,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:49,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:49,781 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:06:49,820 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 23:06:49,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:49,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:51,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:51,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-30 23:06:51,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 23:06:51,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 23:06:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 23:06:51,552 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-09-30 23:06:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:51,992 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-09-30 23:06:51,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 23:06:51,992 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-09-30 23:06:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:51,993 INFO L225 Difference]: With dead ends: 130 [2018-09-30 23:06:51,993 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 23:06:51,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5013 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 23:06:51,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 23:06:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-30 23:06:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 23:06:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-09-30 23:06:51,998 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-09-30 23:06:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:51,998 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-09-30 23:06:51,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 23:06:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-09-30 23:06:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 23:06:51,999 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:51,999 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-30 23:06:51,999 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:52,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:52,000 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-09-30 23:06:52,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:52,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:52,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:52,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:52,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:52,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:52,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:52,985 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:06:53,022 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 23:06:53,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:06:53,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:55,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:55,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-30 23:06:55,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 23:06:55,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 23:06:55,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2622, Invalid=7278, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 23:06:55,050 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-09-30 23:06:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:55,532 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-09-30 23:06:55,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 23:06:55,532 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-09-30 23:06:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:55,533 INFO L225 Difference]: With dead ends: 135 [2018-09-30 23:06:55,533 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 23:06:55,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2622, Invalid=7278, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 23:06:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 23:06:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-30 23:06:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 23:06:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-09-30 23:06:55,540 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-09-30 23:06:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:55,540 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-09-30 23:06:55,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 23:06:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-09-30 23:06:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 23:06:55,541 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:55,541 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-30 23:06:55,542 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:55,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:55,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-09-30 23:06:55,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:55,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:55,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:55,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:06:55,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:56,618 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:06:56,618 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:06:56,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:06:56,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:06:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:06:58,695 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:06:58,695 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-30 23:06:58,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 23:06:58,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 23:06:58,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2831, Invalid=7881, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 23:06:58,697 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-09-30 23:06:59,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:06:59,083 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-09-30 23:06:59,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 23:06:59,084 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-09-30 23:06:59,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:06:59,085 INFO L225 Difference]: With dead ends: 140 [2018-09-30 23:06:59,085 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 23:06:59,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5924 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2831, Invalid=7881, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 23:06:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 23:06:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-30 23:06:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 23:06:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-09-30 23:06:59,091 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-09-30 23:06:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:06:59,091 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-09-30 23:06:59,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 23:06:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-09-30 23:06:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 23:06:59,092 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:06:59,092 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-30 23:06:59,093 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:06:59,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:06:59,093 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-09-30 23:06:59,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:06:59,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:06:59,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:59,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:06:59,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:06:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:00,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:00,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:00,429 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:07:00,462 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:07:00,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:00,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:02,439 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:02,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-30 23:07:02,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 23:07:02,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 23:07:02,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3048, Invalid=8508, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 23:07:02,441 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-09-30 23:07:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:03,245 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-09-30 23:07:03,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 23:07:03,245 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-09-30 23:07:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:03,246 INFO L225 Difference]: With dead ends: 145 [2018-09-30 23:07:03,246 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 23:07:03,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6408 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3048, Invalid=8508, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 23:07:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 23:07:03,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-30 23:07:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 23:07:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-09-30 23:07:03,251 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-09-30 23:07:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:03,252 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-09-30 23:07:03,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 23:07:03,252 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-09-30 23:07:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 23:07:03,252 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:03,253 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-30 23:07:03,253 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:03,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-09-30 23:07:03,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:03,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:03,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:03,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:03,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:05,644 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:05,644 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:05,653 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:07:05,698 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 23:07:05,698 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:05,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:08,309 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:08,310 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-30 23:07:08,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 23:07:08,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 23:07:08,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3273, Invalid=9159, Unknown=0, NotChecked=0, Total=12432 [2018-09-30 23:07:08,311 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-09-30 23:07:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:08,915 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-09-30 23:07:08,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 23:07:08,915 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-09-30 23:07:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:08,916 INFO L225 Difference]: With dead ends: 150 [2018-09-30 23:07:08,916 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 23:07:08,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6911 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3273, Invalid=9159, Unknown=0, NotChecked=0, Total=12432 [2018-09-30 23:07:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 23:07:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-30 23:07:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 23:07:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-09-30 23:07:08,922 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-09-30 23:07:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:08,923 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-09-30 23:07:08,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 23:07:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-09-30 23:07:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 23:07:08,924 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:08,924 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-30 23:07:08,924 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:08,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:08,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-09-30 23:07:08,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:08,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:08,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:08,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:08,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:10,236 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:10,236 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:10,246 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:07:10,281 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:07:10,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:10,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:12,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:12,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-30 23:07:12,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 23:07:12,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 23:07:12,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3506, Invalid=9834, Unknown=0, NotChecked=0, Total=13340 [2018-09-30 23:07:12,917 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-09-30 23:07:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:13,609 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-09-30 23:07:13,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 23:07:13,610 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-09-30 23:07:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:13,611 INFO L225 Difference]: With dead ends: 155 [2018-09-30 23:07:13,611 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 23:07:13,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7433 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3506, Invalid=9834, Unknown=0, NotChecked=0, Total=13340 [2018-09-30 23:07:13,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 23:07:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-30 23:07:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 23:07:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-09-30 23:07:13,618 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-09-30 23:07:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:13,618 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-09-30 23:07:13,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 23:07:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-09-30 23:07:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 23:07:13,619 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:13,619 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-30 23:07:13,620 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:13,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-09-30 23:07:13,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:13,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:13,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:13,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:13,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:15,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:15,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:15,160 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:07:15,245 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 23:07:15,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:15,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:17,619 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:17,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-30 23:07:17,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 23:07:17,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 23:07:17,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3747, Invalid=10533, Unknown=0, NotChecked=0, Total=14280 [2018-09-30 23:07:17,621 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-09-30 23:07:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:18,141 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-09-30 23:07:18,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 23:07:18,141 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-09-30 23:07:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:18,142 INFO L225 Difference]: With dead ends: 160 [2018-09-30 23:07:18,142 INFO L226 Difference]: Without dead ends: 158 [2018-09-30 23:07:18,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7974 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3747, Invalid=10533, Unknown=0, NotChecked=0, Total=14280 [2018-09-30 23:07:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-30 23:07:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-30 23:07:18,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-30 23:07:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-09-30 23:07:18,149 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-09-30 23:07:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:18,150 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-09-30 23:07:18,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 23:07:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-09-30 23:07:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-30 23:07:18,151 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:18,151 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-30 23:07:18,151 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:18,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-09-30 23:07:18,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:18,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:18,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:18,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:18,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:20,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:20,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:20,319 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:07:20,383 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 23:07:20,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:20,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:22,858 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:22,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-30 23:07:22,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 23:07:22,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 23:07:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3996, Invalid=11256, Unknown=0, NotChecked=0, Total=15252 [2018-09-30 23:07:22,861 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-09-30 23:07:23,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:23,402 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-09-30 23:07:23,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 23:07:23,403 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-09-30 23:07:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:23,404 INFO L225 Difference]: With dead ends: 165 [2018-09-30 23:07:23,404 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 23:07:23,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8534 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3996, Invalid=11256, Unknown=0, NotChecked=0, Total=15252 [2018-09-30 23:07:23,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 23:07:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-30 23:07:23,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 23:07:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-09-30 23:07:23,412 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-09-30 23:07:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:23,412 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-09-30 23:07:23,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 23:07:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-09-30 23:07:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 23:07:23,413 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:23,413 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-30 23:07:23,413 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:23,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-09-30 23:07:23,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:23,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:23,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:23,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:23,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:25,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:25,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:25,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:07:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:25,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:27,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:27,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-30 23:07:27,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 23:07:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 23:07:27,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4253, Invalid=12003, Unknown=0, NotChecked=0, Total=16256 [2018-09-30 23:07:27,920 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-09-30 23:07:28,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:28,494 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-09-30 23:07:28,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 23:07:28,494 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-09-30 23:07:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:28,498 INFO L225 Difference]: With dead ends: 170 [2018-09-30 23:07:28,498 INFO L226 Difference]: Without dead ends: 168 [2018-09-30 23:07:28,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9113 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4253, Invalid=12003, Unknown=0, NotChecked=0, Total=16256 [2018-09-30 23:07:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-30 23:07:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-30 23:07:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-30 23:07:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-09-30 23:07:28,506 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-09-30 23:07:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:28,506 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-09-30 23:07:28,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 23:07:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-09-30 23:07:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-30 23:07:28,507 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:28,507 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-30 23:07:28,507 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:28,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:28,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-09-30 23:07:28,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:28,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:28,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:28,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:07:28,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:30,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:30,398 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:30,405 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:07:30,452 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:07:30,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:30,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:34,170 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:34,170 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-30 23:07:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 23:07:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 23:07:34,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4518, Invalid=12774, Unknown=0, NotChecked=0, Total=17292 [2018-09-30 23:07:34,173 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-09-30 23:07:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:34,828 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-09-30 23:07:34,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 23:07:34,828 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-09-30 23:07:34,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:34,830 INFO L225 Difference]: With dead ends: 175 [2018-09-30 23:07:34,830 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 23:07:34,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9711 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4518, Invalid=12774, Unknown=0, NotChecked=0, Total=17292 [2018-09-30 23:07:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 23:07:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-30 23:07:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 23:07:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-09-30 23:07:34,837 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-09-30 23:07:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:34,838 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-09-30 23:07:34,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 23:07:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-09-30 23:07:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 23:07:34,839 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:34,839 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-30 23:07:34,839 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:34,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:34,840 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-09-30 23:07:34,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:34,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:34,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:34,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:34,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:36,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:36,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:36,646 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:07:36,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 23:07:36,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:36,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:39,980 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:39,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-30 23:07:39,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 23:07:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 23:07:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4791, Invalid=13569, Unknown=0, NotChecked=0, Total=18360 [2018-09-30 23:07:39,983 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-09-30 23:07:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:40,577 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-09-30 23:07:40,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 23:07:40,577 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-09-30 23:07:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:40,579 INFO L225 Difference]: With dead ends: 180 [2018-09-30 23:07:40,579 INFO L226 Difference]: Without dead ends: 178 [2018-09-30 23:07:40,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10328 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4791, Invalid=13569, Unknown=0, NotChecked=0, Total=18360 [2018-09-30 23:07:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-30 23:07:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-30 23:07:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-30 23:07:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-09-30 23:07:40,587 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-09-30 23:07:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:40,588 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-09-30 23:07:40,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 23:07:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-09-30 23:07:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 23:07:40,589 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:40,589 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-30 23:07:40,589 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:40,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-09-30 23:07:40,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:40,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:40,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:40,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:40,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:42,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:42,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:42,417 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:07:42,462 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:07:42,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:42,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:45,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:45,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-30 23:07:45,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 23:07:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 23:07:45,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5072, Invalid=14388, Unknown=0, NotChecked=0, Total=19460 [2018-09-30 23:07:45,971 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-09-30 23:07:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:46,768 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-09-30 23:07:46,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 23:07:46,768 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-09-30 23:07:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:46,769 INFO L225 Difference]: With dead ends: 185 [2018-09-30 23:07:46,769 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 23:07:46,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10964 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5072, Invalid=14388, Unknown=0, NotChecked=0, Total=19460 [2018-09-30 23:07:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 23:07:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-30 23:07:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 23:07:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-09-30 23:07:46,778 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-09-30 23:07:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:46,778 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-09-30 23:07:46,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 23:07:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-09-30 23:07:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 23:07:46,779 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:46,780 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-30 23:07:46,780 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:46,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:46,780 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-09-30 23:07:46,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:46,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:46,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:46,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:46,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:49,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:49,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:49,174 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:07:49,242 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 23:07:49,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:49,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:07:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:52,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:07:52,836 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-30 23:07:52,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 23:07:52,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 23:07:52,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5361, Invalid=15231, Unknown=0, NotChecked=0, Total=20592 [2018-09-30 23:07:52,838 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-09-30 23:07:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:07:53,507 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-09-30 23:07:53,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 23:07:53,507 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-09-30 23:07:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:07:53,508 INFO L225 Difference]: With dead ends: 190 [2018-09-30 23:07:53,509 INFO L226 Difference]: Without dead ends: 188 [2018-09-30 23:07:53,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11619 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5361, Invalid=15231, Unknown=0, NotChecked=0, Total=20592 [2018-09-30 23:07:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-30 23:07:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-30 23:07:53,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 23:07:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-09-30 23:07:53,517 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-09-30 23:07:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:07:53,517 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-09-30 23:07:53,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 23:07:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-09-30 23:07:53,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-30 23:07:53,518 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:07:53,518 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-30 23:07:53,519 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:07:53,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:07:53,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-09-30 23:07:53,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:07:53,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:07:53,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:53,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:07:53,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:07:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:07:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:07:56,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:07:56,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:07:56,146 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:07:56,207 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 23:07:56,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:07:56,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:00,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:00,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-30 23:08:00,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 23:08:00,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 23:08:00,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5658, Invalid=16098, Unknown=0, NotChecked=0, Total=21756 [2018-09-30 23:08:00,500 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-09-30 23:08:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:01,125 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-09-30 23:08:01,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 23:08:01,125 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-09-30 23:08:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:01,126 INFO L225 Difference]: With dead ends: 195 [2018-09-30 23:08:01,126 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 23:08:01,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12293 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5658, Invalid=16098, Unknown=0, NotChecked=0, Total=21756 [2018-09-30 23:08:01,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 23:08:01,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-30 23:08:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 23:08:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-09-30 23:08:01,134 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-09-30 23:08:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:01,134 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-09-30 23:08:01,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 23:08:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-09-30 23:08:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 23:08:01,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:01,135 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-30 23:08:01,135 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:01,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:01,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-09-30 23:08:01,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:01,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:01,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:01,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:08:01,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:05,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:05,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:05,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:08:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:05,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:08,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:08,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-09-30 23:08:08,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-09-30 23:08:08,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-09-30 23:08:08,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5963, Invalid=16989, Unknown=0, NotChecked=0, Total=22952 [2018-09-30 23:08:08,806 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-09-30 23:08:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:09,554 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-09-30 23:08:09,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 23:08:09,554 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-09-30 23:08:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:09,555 INFO L225 Difference]: With dead ends: 200 [2018-09-30 23:08:09,555 INFO L226 Difference]: Without dead ends: 198 [2018-09-30 23:08:09,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12986 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=5963, Invalid=16989, Unknown=0, NotChecked=0, Total=22952 [2018-09-30 23:08:09,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-30 23:08:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-30 23:08:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-30 23:08:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-09-30 23:08:09,563 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-09-30 23:08:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:09,564 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-09-30 23:08:09,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-09-30 23:08:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-09-30 23:08:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-30 23:08:09,565 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:09,565 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-30 23:08:09,565 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:09,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-09-30 23:08:09,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:09,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:09,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:09,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:08:09,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:12,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:12,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:12,848 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:08:12,911 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:08:12,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:08:12,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:17,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:17,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-09-30 23:08:17,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-09-30 23:08:17,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-09-30 23:08:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6276, Invalid=17904, Unknown=0, NotChecked=0, Total=24180 [2018-09-30 23:08:17,234 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-09-30 23:08:18,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:18,023 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-09-30 23:08:18,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 23:08:18,023 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-09-30 23:08:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:18,025 INFO L225 Difference]: With dead ends: 205 [2018-09-30 23:08:18,025 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 23:08:18,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13698 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6276, Invalid=17904, Unknown=0, NotChecked=0, Total=24180 [2018-09-30 23:08:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 23:08:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-09-30 23:08:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 23:08:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-09-30 23:08:18,037 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-09-30 23:08:18,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:18,038 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-09-30 23:08:18,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-09-30 23:08:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-09-30 23:08:18,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 23:08:18,038 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:18,039 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-09-30 23:08:18,039 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:18,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-09-30 23:08:18,039 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:18,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:18,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:18,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:08:18,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:20,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:20,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:20,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:08:20,809 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 23:08:20,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:08:20,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:24,823 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:24,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-09-30 23:08:24,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-09-30 23:08:24,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-09-30 23:08:24,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6597, Invalid=18843, Unknown=0, NotChecked=0, Total=25440 [2018-09-30 23:08:24,827 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-09-30 23:08:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:25,631 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-09-30 23:08:25,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 23:08:25,632 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-09-30 23:08:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:25,633 INFO L225 Difference]: With dead ends: 210 [2018-09-30 23:08:25,634 INFO L226 Difference]: Without dead ends: 208 [2018-09-30 23:08:25,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=6597, Invalid=18843, Unknown=0, NotChecked=0, Total=25440 [2018-09-30 23:08:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-30 23:08:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-09-30 23:08:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-30 23:08:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-09-30 23:08:25,642 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-09-30 23:08:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:25,642 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-09-30 23:08:25,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-09-30 23:08:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-09-30 23:08:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-30 23:08:25,643 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:25,643 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-09-30 23:08:25,643 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:25,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:25,643 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-09-30 23:08:25,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:25,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:25,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:25,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:08:25,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:28,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:28,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:28,800 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:08:28,849 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:08:28,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:08:28,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:33,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:33,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-09-30 23:08:33,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-09-30 23:08:33,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-09-30 23:08:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6926, Invalid=19806, Unknown=0, NotChecked=0, Total=26732 [2018-09-30 23:08:33,167 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-09-30 23:08:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:34,031 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-09-30 23:08:34,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 23:08:34,031 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-09-30 23:08:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:34,032 INFO L225 Difference]: With dead ends: 215 [2018-09-30 23:08:34,032 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 23:08:34,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15179 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=6926, Invalid=19806, Unknown=0, NotChecked=0, Total=26732 [2018-09-30 23:08:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 23:08:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-09-30 23:08:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 23:08:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-09-30 23:08:34,039 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-09-30 23:08:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:34,039 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-09-30 23:08:34,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-09-30 23:08:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-09-30 23:08:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 23:08:34,040 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:34,040 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-09-30 23:08:34,041 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:34,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:34,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-09-30 23:08:34,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:34,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:34,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:34,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:08:34,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:37,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:37,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:37,187 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:08:37,257 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 23:08:37,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:08:37,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:42,437 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:42,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-09-30 23:08:42,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-09-30 23:08:42,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-09-30 23:08:42,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7263, Invalid=20793, Unknown=0, NotChecked=0, Total=28056 [2018-09-30 23:08:42,440 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. [2018-09-30 23:08:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:43,368 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2018-09-30 23:08:43,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 23:08:43,369 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 208 [2018-09-30 23:08:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:43,370 INFO L225 Difference]: With dead ends: 220 [2018-09-30 23:08:43,370 INFO L226 Difference]: Without dead ends: 218 [2018-09-30 23:08:43,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15948 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=7263, Invalid=20793, Unknown=0, NotChecked=0, Total=28056 [2018-09-30 23:08:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-09-30 23:08:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-09-30 23:08:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-09-30 23:08:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2018-09-30 23:08:43,378 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 208 [2018-09-30 23:08:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:43,379 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2018-09-30 23:08:43,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-09-30 23:08:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2018-09-30 23:08:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-30 23:08:43,380 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:43,380 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-09-30 23:08:43,381 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:43,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash -638782368, now seen corresponding path program 42 times [2018-09-30 23:08:43,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:43,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:43,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:43,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:08:43,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:46,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:46,178 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:46,185 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:08:46,262 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 23:08:46,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:08:46,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:50,891 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:50,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2018-09-30 23:08:50,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-09-30 23:08:50,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-09-30 23:08:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7608, Invalid=21804, Unknown=0, NotChecked=0, Total=29412 [2018-09-30 23:08:50,893 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand 172 states. [2018-09-30 23:08:51,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:08:51,782 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2018-09-30 23:08:51,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 23:08:51,782 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 213 [2018-09-30 23:08:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:08:51,783 INFO L225 Difference]: With dead ends: 225 [2018-09-30 23:08:51,783 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 23:08:51,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16736 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=7608, Invalid=21804, Unknown=0, NotChecked=0, Total=29412 [2018-09-30 23:08:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 23:08:51,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-09-30 23:08:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 23:08:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2018-09-30 23:08:51,790 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 213 [2018-09-30 23:08:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:08:51,790 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2018-09-30 23:08:51,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-09-30 23:08:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2018-09-30 23:08:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 23:08:51,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:08:51,791 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-09-30 23:08:51,791 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:08:51,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:08:51,792 INFO L82 PathProgramCache]: Analyzing trace with hash 372754796, now seen corresponding path program 43 times [2018-09-30 23:08:51,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:08:51,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:08:51,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:51,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:08:51,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:08:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:54,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:08:54,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:08:54,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:08:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:08:54,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:08:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:08:59,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:08:59,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2018-09-30 23:08:59,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-09-30 23:08:59,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-09-30 23:08:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7961, Invalid=22839, Unknown=0, NotChecked=0, Total=30800 [2018-09-30 23:08:59,628 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand 176 states. [2018-09-30 23:09:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:09:00,604 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2018-09-30 23:09:00,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 23:09:00,604 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 218 [2018-09-30 23:09:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:09:00,606 INFO L225 Difference]: With dead ends: 230 [2018-09-30 23:09:00,606 INFO L226 Difference]: Without dead ends: 228 [2018-09-30 23:09:00,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17543 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=7961, Invalid=22839, Unknown=0, NotChecked=0, Total=30800 [2018-09-30 23:09:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-30 23:09:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-09-30 23:09:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-09-30 23:09:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2018-09-30 23:09:00,612 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 218 [2018-09-30 23:09:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:09:00,612 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2018-09-30 23:09:00,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-09-30 23:09:00,612 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2018-09-30 23:09:00,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-30 23:09:00,613 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:09:00,613 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-09-30 23:09:00,614 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:09:00,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:09:00,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2065417248, now seen corresponding path program 44 times [2018-09-30 23:09:00,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:09:00,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:09:00,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:00,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:09:00,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:03,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:09:03,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:09:03,778 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:09:03,828 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:09:03,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:09:03,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:09:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:08,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:09:08,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2018-09-30 23:09:08,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-09-30 23:09:08,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-09-30 23:09:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8322, Invalid=23898, Unknown=0, NotChecked=0, Total=32220 [2018-09-30 23:09:08,951 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 180 states. [2018-09-30 23:09:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:09:10,005 INFO L93 Difference]: Finished difference Result 235 states and 281 transitions. [2018-09-30 23:09:10,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 23:09:10,006 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 223 [2018-09-30 23:09:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:09:10,007 INFO L225 Difference]: With dead ends: 235 [2018-09-30 23:09:10,007 INFO L226 Difference]: Without dead ends: 233 [2018-09-30 23:09:10,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18369 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=8322, Invalid=23898, Unknown=0, NotChecked=0, Total=32220 [2018-09-30 23:09:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-30 23:09:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-09-30 23:09:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 23:09:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2018-09-30 23:09:10,015 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 223 [2018-09-30 23:09:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:09:10,015 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2018-09-30 23:09:10,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-09-30 23:09:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2018-09-30 23:09:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-30 23:09:10,017 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:09:10,017 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-09-30 23:09:10,017 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:09:10,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:09:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1340001812, now seen corresponding path program 45 times [2018-09-30 23:09:10,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:09:10,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:09:10,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:10,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:09:10,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:13,259 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:09:13,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:09:13,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:09:13,349 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 23:09:13,349 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:09:13,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:09:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:18,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:09:18,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2018-09-30 23:09:18,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-09-30 23:09:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-09-30 23:09:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8691, Invalid=24981, Unknown=0, NotChecked=0, Total=33672 [2018-09-30 23:09:18,651 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand 184 states. [2018-09-30 23:09:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:09:19,623 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-09-30 23:09:19,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 23:09:19,623 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 228 [2018-09-30 23:09:19,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:09:19,624 INFO L225 Difference]: With dead ends: 240 [2018-09-30 23:09:19,624 INFO L226 Difference]: Without dead ends: 238 [2018-09-30 23:09:19,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19214 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=8691, Invalid=24981, Unknown=0, NotChecked=0, Total=33672 [2018-09-30 23:09:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-09-30 23:09:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-09-30 23:09:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-09-30 23:09:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2018-09-30 23:09:19,633 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 228 [2018-09-30 23:09:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:09:19,633 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2018-09-30 23:09:19,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-09-30 23:09:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2018-09-30 23:09:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-09-30 23:09:19,634 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:09:19,635 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-09-30 23:09:19,635 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:09:19,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:09:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 117973856, now seen corresponding path program 46 times [2018-09-30 23:09:19,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:09:19,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:09:19,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:19,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:09:19,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:23,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:09:23,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:09:23,098 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:09:23,169 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:09:23,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:09:23,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:09:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:28,832 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:09:28,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2018-09-30 23:09:28,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-09-30 23:09:28,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-09-30 23:09:28,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9068, Invalid=26088, Unknown=0, NotChecked=0, Total=35156 [2018-09-30 23:09:28,835 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand 188 states. [2018-09-30 23:09:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:09:29,980 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2018-09-30 23:09:29,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 23:09:29,980 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 233 [2018-09-30 23:09:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:09:29,982 INFO L225 Difference]: With dead ends: 245 [2018-09-30 23:09:29,982 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 23:09:29,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20078 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=9068, Invalid=26088, Unknown=0, NotChecked=0, Total=35156 [2018-09-30 23:09:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 23:09:29,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-09-30 23:09:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 23:09:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2018-09-30 23:09:29,991 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 233 [2018-09-30 23:09:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:09:29,991 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2018-09-30 23:09:29,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-09-30 23:09:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2018-09-30 23:09:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 23:09:29,993 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:09:29,993 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-09-30 23:09:29,993 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:09:29,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:09:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash 365034092, now seen corresponding path program 47 times [2018-09-30 23:09:29,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:09:29,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:09:29,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:29,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:09:29,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:33,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:09:33,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:09:33,522 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:09:33,620 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 23:09:33,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:09:33,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:09:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:39,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:09:39,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2018-09-30 23:09:39,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-09-30 23:09:39,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-09-30 23:09:39,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=27219, Unknown=0, NotChecked=0, Total=36672 [2018-09-30 23:09:39,352 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand 192 states. [2018-09-30 23:09:40,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:09:40,524 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2018-09-30 23:09:40,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 23:09:40,525 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 238 [2018-09-30 23:09:40,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:09:40,526 INFO L225 Difference]: With dead ends: 250 [2018-09-30 23:09:40,526 INFO L226 Difference]: Without dead ends: 248 [2018-09-30 23:09:40,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20961 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=9453, Invalid=27219, Unknown=0, NotChecked=0, Total=36672 [2018-09-30 23:09:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-09-30 23:09:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-09-30 23:09:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-09-30 23:09:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2018-09-30 23:09:40,535 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 238 [2018-09-30 23:09:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:09:40,535 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2018-09-30 23:09:40,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-09-30 23:09:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2018-09-30 23:09:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-30 23:09:40,537 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:09:40,537 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-09-30 23:09:40,537 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:09:40,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:09:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1225829088, now seen corresponding path program 48 times [2018-09-30 23:09:40,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:09:40,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:09:40,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:40,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:09:40,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:44,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:09:44,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:09:44,054 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:09:44,142 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 23:09:44,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:09:44,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:09:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:50,081 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:09:50,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2018-09-30 23:09:50,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-09-30 23:09:50,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-09-30 23:09:50,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9846, Invalid=28374, Unknown=0, NotChecked=0, Total=38220 [2018-09-30 23:09:50,084 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand 196 states. [2018-09-30 23:09:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:09:51,281 INFO L93 Difference]: Finished difference Result 255 states and 305 transitions. [2018-09-30 23:09:51,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 23:09:51,281 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 243 [2018-09-30 23:09:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:09:51,283 INFO L225 Difference]: With dead ends: 255 [2018-09-30 23:09:51,283 INFO L226 Difference]: Without dead ends: 253 [2018-09-30 23:09:51,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21863 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=9846, Invalid=28374, Unknown=0, NotChecked=0, Total=38220 [2018-09-30 23:09:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-30 23:09:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-09-30 23:09:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-30 23:09:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2018-09-30 23:09:51,291 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 243 [2018-09-30 23:09:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:09:51,291 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2018-09-30 23:09:51,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-09-30 23:09:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2018-09-30 23:09:51,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-30 23:09:51,292 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:09:51,293 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-09-30 23:09:51,293 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:09:51,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:09:51,293 INFO L82 PathProgramCache]: Analyzing trace with hash 291644140, now seen corresponding path program 49 times [2018-09-30 23:09:51,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:09:51,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:09:51,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:51,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:09:51,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:09:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:09:54,899 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:09:54,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:09:54,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:09:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:09:54,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:10:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:01,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:10:01,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2018-09-30 23:10:01,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-09-30 23:10:01,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-09-30 23:10:01,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10247, Invalid=29553, Unknown=0, NotChecked=0, Total=39800 [2018-09-30 23:10:01,110 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand 200 states. [2018-09-30 23:10:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:10:02,338 INFO L93 Difference]: Finished difference Result 260 states and 311 transitions. [2018-09-30 23:10:02,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 23:10:02,338 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 248 [2018-09-30 23:10:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:10:02,340 INFO L225 Difference]: With dead ends: 260 [2018-09-30 23:10:02,340 INFO L226 Difference]: Without dead ends: 258 [2018-09-30 23:10:02,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22784 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=10247, Invalid=29553, Unknown=0, NotChecked=0, Total=39800 [2018-09-30 23:10:02,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-09-30 23:10:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 254. [2018-09-30 23:10:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-09-30 23:10:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 304 transitions. [2018-09-30 23:10:02,348 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 304 transitions. Word has length 248 [2018-09-30 23:10:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:10:02,349 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 304 transitions. [2018-09-30 23:10:02,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-09-30 23:10:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 304 transitions. [2018-09-30 23:10:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-30 23:10:02,350 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:10:02,350 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 50, 1, 1, 1] [2018-09-30 23:10:02,351 INFO L423 AbstractCegarLoop]: === Iteration 52 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:10:02,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:10:02,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1380593056, now seen corresponding path program 50 times [2018-09-30 23:10:02,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:10:02,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:10:02,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:02,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:10:02,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:10:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:06,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:10:06,808 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:10:06,817 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:10:06,876 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:10:06,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:10:06,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:10:13,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:13,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:10:13,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 203 [2018-09-30 23:10:13,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-09-30 23:10:13,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-09-30 23:10:13,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10656, Invalid=30756, Unknown=0, NotChecked=0, Total=41412 [2018-09-30 23:10:13,563 INFO L87 Difference]: Start difference. First operand 254 states and 304 transitions. Second operand 204 states. [2018-09-30 23:10:14,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:10:14,843 INFO L93 Difference]: Finished difference Result 265 states and 317 transitions. [2018-09-30 23:10:14,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 23:10:14,843 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 253 [2018-09-30 23:10:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:10:14,844 INFO L225 Difference]: With dead ends: 265 [2018-09-30 23:10:14,845 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 23:10:14,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23724 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=10656, Invalid=30756, Unknown=0, NotChecked=0, Total=41412 [2018-09-30 23:10:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 23:10:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2018-09-30 23:10:14,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 23:10:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2018-09-30 23:10:14,853 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 253 [2018-09-30 23:10:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:10:14,854 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2018-09-30 23:10:14,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-09-30 23:10:14,854 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2018-09-30 23:10:14,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 23:10:14,855 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:10:14,855 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 51, 1, 1, 1] [2018-09-30 23:10:14,855 INFO L423 AbstractCegarLoop]: === Iteration 53 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:10:14,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:10:14,856 INFO L82 PathProgramCache]: Analyzing trace with hash 860466028, now seen corresponding path program 51 times [2018-09-30 23:10:14,856 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:10:14,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:10:14,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:14,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:10:14,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:10:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:18,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:10:18,843 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:10:18,854 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:10:18,995 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 23:10:18,995 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:10:19,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:10:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 0 proven. 6426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:25,708 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:10:25,709 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 207 [2018-09-30 23:10:25,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-09-30 23:10:25,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-09-30 23:10:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11073, Invalid=31983, Unknown=0, NotChecked=0, Total=43056 [2018-09-30 23:10:25,712 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand 208 states. [2018-09-30 23:10:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:10:27,070 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2018-09-30 23:10:27,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 23:10:27,070 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 258 [2018-09-30 23:10:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:10:27,071 INFO L225 Difference]: With dead ends: 270 [2018-09-30 23:10:27,071 INFO L226 Difference]: Without dead ends: 268 [2018-09-30 23:10:27,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24683 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=11073, Invalid=31983, Unknown=0, NotChecked=0, Total=43056 [2018-09-30 23:10:27,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2018-09-30 23:10:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2018-09-30 23:10:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-09-30 23:10:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 316 transitions. [2018-09-30 23:10:27,078 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 316 transitions. Word has length 258 [2018-09-30 23:10:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:10:27,078 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 316 transitions. [2018-09-30 23:10:27,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-09-30 23:10:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 316 transitions. [2018-09-30 23:10:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-09-30 23:10:27,079 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:10:27,079 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 52, 1, 1, 1] [2018-09-30 23:10:27,080 INFO L423 AbstractCegarLoop]: === Iteration 54 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:10:27,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:10:27,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1850762784, now seen corresponding path program 52 times [2018-09-30 23:10:27,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:10:27,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:10:27,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:27,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:10:27,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:10:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:31,208 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:10:31,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:10:31,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:10:31,274 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:10:31,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:10:31,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:10:38,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 0 proven. 6682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:38,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:10:38,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 211 [2018-09-30 23:10:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-09-30 23:10:38,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-09-30 23:10:38,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11498, Invalid=33234, Unknown=0, NotChecked=0, Total=44732 [2018-09-30 23:10:38,203 INFO L87 Difference]: Start difference. First operand 264 states and 316 transitions. Second operand 212 states. [2018-09-30 23:10:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:10:39,763 INFO L93 Difference]: Finished difference Result 275 states and 329 transitions. [2018-09-30 23:10:39,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 23:10:39,763 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 263 [2018-09-30 23:10:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:10:39,764 INFO L225 Difference]: With dead ends: 275 [2018-09-30 23:10:39,764 INFO L226 Difference]: Without dead ends: 273 [2018-09-30 23:10:39,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25661 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=11498, Invalid=33234, Unknown=0, NotChecked=0, Total=44732 [2018-09-30 23:10:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-09-30 23:10:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2018-09-30 23:10:39,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-09-30 23:10:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 322 transitions. [2018-09-30 23:10:39,771 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 322 transitions. Word has length 263 [2018-09-30 23:10:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:10:39,771 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 322 transitions. [2018-09-30 23:10:39,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-09-30 23:10:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 322 transitions. [2018-09-30 23:10:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-30 23:10:39,772 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:10:39,772 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 53, 1, 1, 1] [2018-09-30 23:10:39,773 INFO L423 AbstractCegarLoop]: === Iteration 55 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:10:39,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:10:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1371575276, now seen corresponding path program 53 times [2018-09-30 23:10:39,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:10:39,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:10:39,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:39,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:10:39,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:10:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:44,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:10:44,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:10:44,031 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:10:44,130 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 23:10:44,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:10:44,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:10:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 0 proven. 6943 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:51,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:10:51,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 215 [2018-09-30 23:10:51,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-09-30 23:10:51,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-09-30 23:10:51,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11931, Invalid=34509, Unknown=0, NotChecked=0, Total=46440 [2018-09-30 23:10:51,232 INFO L87 Difference]: Start difference. First operand 269 states and 322 transitions. Second operand 216 states. [2018-09-30 23:10:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:10:52,814 INFO L93 Difference]: Finished difference Result 280 states and 335 transitions. [2018-09-30 23:10:52,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 23:10:52,815 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 268 [2018-09-30 23:10:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:10:52,816 INFO L225 Difference]: With dead ends: 280 [2018-09-30 23:10:52,816 INFO L226 Difference]: Without dead ends: 278 [2018-09-30 23:10:52,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26658 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=11931, Invalid=34509, Unknown=0, NotChecked=0, Total=46440 [2018-09-30 23:10:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-09-30 23:10:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2018-09-30 23:10:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-09-30 23:10:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 328 transitions. [2018-09-30 23:10:52,825 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 328 transitions. Word has length 268 [2018-09-30 23:10:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:10:52,825 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 328 transitions. [2018-09-30 23:10:52,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-09-30 23:10:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 328 transitions. [2018-09-30 23:10:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-30 23:10:52,827 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:10:52,827 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 54, 1, 1, 1] [2018-09-30 23:10:52,827 INFO L423 AbstractCegarLoop]: === Iteration 56 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:10:52,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:10:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash -877264544, now seen corresponding path program 54 times [2018-09-30 23:10:52,827 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:10:52,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:10:52,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:52,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:10:52,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:10:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:10:57,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:10:57,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:10:57,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:10:57,259 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:10:57,358 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 23:10:57,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:10:57,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:11:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 0 proven. 7209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:05,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:11:05,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 219 [2018-09-30 23:11:05,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-09-30 23:11:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-09-30 23:11:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12372, Invalid=35808, Unknown=0, NotChecked=0, Total=48180 [2018-09-30 23:11:05,069 INFO L87 Difference]: Start difference. First operand 274 states and 328 transitions. Second operand 220 states. [2018-09-30 23:11:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:11:06,707 INFO L93 Difference]: Finished difference Result 285 states and 341 transitions. [2018-09-30 23:11:06,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 23:11:06,707 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 273 [2018-09-30 23:11:06,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:11:06,708 INFO L225 Difference]: With dead ends: 285 [2018-09-30 23:11:06,708 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 23:11:06,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27674 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=12372, Invalid=35808, Unknown=0, NotChecked=0, Total=48180 [2018-09-30 23:11:06,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 23:11:06,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2018-09-30 23:11:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 23:11:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 334 transitions. [2018-09-30 23:11:06,717 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 334 transitions. Word has length 273 [2018-09-30 23:11:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:11:06,717 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 334 transitions. [2018-09-30 23:11:06,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-09-30 23:11:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 334 transitions. [2018-09-30 23:11:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 23:11:06,719 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:11:06,719 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 55, 1, 1, 1] [2018-09-30 23:11:06,719 INFO L423 AbstractCegarLoop]: === Iteration 57 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:11:06,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:11:06,719 INFO L82 PathProgramCache]: Analyzing trace with hash 151968876, now seen corresponding path program 55 times [2018-09-30 23:11:06,720 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:11:06,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:11:06,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:06,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:11:06,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:11:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:11,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:11:11,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:11:11,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:11:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:11:11,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:11:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 0 proven. 7480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:18,904 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:11:18,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 223 [2018-09-30 23:11:18,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-09-30 23:11:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-09-30 23:11:18,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12821, Invalid=37131, Unknown=0, NotChecked=0, Total=49952 [2018-09-30 23:11:18,907 INFO L87 Difference]: Start difference. First operand 279 states and 334 transitions. Second operand 224 states. [2018-09-30 23:11:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:11:20,523 INFO L93 Difference]: Finished difference Result 290 states and 347 transitions. [2018-09-30 23:11:20,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 23:11:20,523 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 278 [2018-09-30 23:11:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:11:20,525 INFO L225 Difference]: With dead ends: 290 [2018-09-30 23:11:20,525 INFO L226 Difference]: Without dead ends: 288 [2018-09-30 23:11:20,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28709 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=12821, Invalid=37131, Unknown=0, NotChecked=0, Total=49952 [2018-09-30 23:11:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-09-30 23:11:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2018-09-30 23:11:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-09-30 23:11:20,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 340 transitions. [2018-09-30 23:11:20,531 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 340 transitions. Word has length 278 [2018-09-30 23:11:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:11:20,532 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 340 transitions. [2018-09-30 23:11:20,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-09-30 23:11:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 340 transitions. [2018-09-30 23:11:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-30 23:11:20,533 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:11:20,533 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 56, 1, 1, 1] [2018-09-30 23:11:20,533 INFO L423 AbstractCegarLoop]: === Iteration 58 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:11:20,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:11:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash 746653920, now seen corresponding path program 56 times [2018-09-30 23:11:20,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:11:20,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:11:20,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:20,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:11:20,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:11:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:25,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:11:25,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:11:25,266 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:11:25,329 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:11:25,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:11:25,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:11:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 0 proven. 7756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:33,213 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:11:33,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 227 [2018-09-30 23:11:33,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-09-30 23:11:33,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-09-30 23:11:33,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13278, Invalid=38478, Unknown=0, NotChecked=0, Total=51756 [2018-09-30 23:11:33,216 INFO L87 Difference]: Start difference. First operand 284 states and 340 transitions. Second operand 228 states. [2018-09-30 23:11:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:11:35,084 INFO L93 Difference]: Finished difference Result 295 states and 353 transitions. [2018-09-30 23:11:35,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 23:11:35,084 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 283 [2018-09-30 23:11:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:11:35,085 INFO L225 Difference]: With dead ends: 295 [2018-09-30 23:11:35,085 INFO L226 Difference]: Without dead ends: 293 [2018-09-30 23:11:35,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29763 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=13278, Invalid=38478, Unknown=0, NotChecked=0, Total=51756 [2018-09-30 23:11:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-09-30 23:11:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-09-30 23:11:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-09-30 23:11:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2018-09-30 23:11:35,092 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 283 [2018-09-30 23:11:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:11:35,092 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2018-09-30 23:11:35,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-09-30 23:11:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2018-09-30 23:11:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-30 23:11:35,093 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:11:35,093 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 57, 1, 1, 1] [2018-09-30 23:11:35,093 INFO L423 AbstractCegarLoop]: === Iteration 59 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:11:35,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:11:35,094 INFO L82 PathProgramCache]: Analyzing trace with hash 998016236, now seen corresponding path program 57 times [2018-09-30 23:11:35,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:11:35,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:11:35,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:35,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:11:35,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:11:39,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:39,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:11:39,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:11:39,811 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:11:39,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 23:11:39,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:11:39,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:11:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:48,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:11:48,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 231 [2018-09-30 23:11:48,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-09-30 23:11:48,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-09-30 23:11:48,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13743, Invalid=39849, Unknown=0, NotChecked=0, Total=53592 [2018-09-30 23:11:48,227 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand 232 states. [2018-09-30 23:11:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:11:50,020 INFO L93 Difference]: Finished difference Result 300 states and 359 transitions. [2018-09-30 23:11:50,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 23:11:50,021 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 288 [2018-09-30 23:11:50,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:11:50,022 INFO L225 Difference]: With dead ends: 300 [2018-09-30 23:11:50,022 INFO L226 Difference]: Without dead ends: 298 [2018-09-30 23:11:50,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30836 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=13743, Invalid=39849, Unknown=0, NotChecked=0, Total=53592 [2018-09-30 23:11:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-09-30 23:11:50,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 294. [2018-09-30 23:11:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-09-30 23:11:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 352 transitions. [2018-09-30 23:11:50,031 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 352 transitions. Word has length 288 [2018-09-30 23:11:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:11:50,031 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 352 transitions. [2018-09-30 23:11:50,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-09-30 23:11:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 352 transitions. [2018-09-30 23:11:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-30 23:11:50,033 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:11:50,033 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 58, 1, 1, 1] [2018-09-30 23:11:50,033 INFO L423 AbstractCegarLoop]: === Iteration 60 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:11:50,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:11:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -20402080, now seen corresponding path program 58 times [2018-09-30 23:11:50,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:11:50,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:11:50,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:50,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:11:50,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:11:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:11:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:11:54,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:11:54,960 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:11:54,970 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:11:55,037 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:11:55,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:11:55,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:12:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 0 proven. 8323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:03,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:12:03,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 235 [2018-09-30 23:12:03,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-09-30 23:12:03,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-09-30 23:12:03,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14216, Invalid=41244, Unknown=0, NotChecked=0, Total=55460 [2018-09-30 23:12:03,771 INFO L87 Difference]: Start difference. First operand 294 states and 352 transitions. Second operand 236 states. [2018-09-30 23:12:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:12:05,822 INFO L93 Difference]: Finished difference Result 305 states and 365 transitions. [2018-09-30 23:12:05,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 23:12:05,824 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 293 [2018-09-30 23:12:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:12:05,825 INFO L225 Difference]: With dead ends: 305 [2018-09-30 23:12:05,825 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 23:12:05,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31928 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=14216, Invalid=41244, Unknown=0, NotChecked=0, Total=55460 [2018-09-30 23:12:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 23:12:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2018-09-30 23:12:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-30 23:12:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2018-09-30 23:12:05,835 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 293 [2018-09-30 23:12:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:12:05,835 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2018-09-30 23:12:05,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-09-30 23:12:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2018-09-30 23:12:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-30 23:12:05,837 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:12:05,837 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 59, 1, 1, 1] [2018-09-30 23:12:05,838 INFO L423 AbstractCegarLoop]: === Iteration 61 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:12:05,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:12:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1856926356, now seen corresponding path program 59 times [2018-09-30 23:12:05,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:12:05,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:12:05,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:05,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:12:05,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:12:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:11,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:12:11,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:12:11,047 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:12:11,163 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 23:12:11,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:12:11,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:12:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 0 proven. 8614 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:19,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:12:19,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 239 [2018-09-30 23:12:19,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-09-30 23:12:19,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-09-30 23:12:19,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14697, Invalid=42663, Unknown=0, NotChecked=0, Total=57360 [2018-09-30 23:12:19,961 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand 240 states. [2018-09-30 23:12:21,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:12:21,975 INFO L93 Difference]: Finished difference Result 310 states and 371 transitions. [2018-09-30 23:12:21,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 23:12:21,975 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 298 [2018-09-30 23:12:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:12:21,977 INFO L225 Difference]: With dead ends: 310 [2018-09-30 23:12:21,977 INFO L226 Difference]: Without dead ends: 308 [2018-09-30 23:12:21,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33039 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=14697, Invalid=42663, Unknown=0, NotChecked=0, Total=57360 [2018-09-30 23:12:21,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-09-30 23:12:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2018-09-30 23:12:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-09-30 23:12:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 364 transitions. [2018-09-30 23:12:21,984 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 364 transitions. Word has length 298 [2018-09-30 23:12:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:12:21,984 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 364 transitions. [2018-09-30 23:12:21,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-09-30 23:12:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 364 transitions. [2018-09-30 23:12:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-30 23:12:21,985 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:12:21,985 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 60, 1, 1, 1] [2018-09-30 23:12:21,985 INFO L423 AbstractCegarLoop]: === Iteration 62 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:12:21,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:12:21,986 INFO L82 PathProgramCache]: Analyzing trace with hash -2025523232, now seen corresponding path program 60 times [2018-09-30 23:12:21,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:12:21,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:12:21,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:21,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:12:21,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:12:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:27,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:12:27,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:12:27,355 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:12:27,478 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 23:12:27,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:12:27,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:12:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 0 proven. 8910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:36,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:12:36,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 243 [2018-09-30 23:12:36,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 244 states [2018-09-30 23:12:36,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 244 interpolants. [2018-09-30 23:12:36,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15186, Invalid=44106, Unknown=0, NotChecked=0, Total=59292 [2018-09-30 23:12:36,390 INFO L87 Difference]: Start difference. First operand 304 states and 364 transitions. Second operand 244 states. [2018-09-30 23:12:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:12:38,649 INFO L93 Difference]: Finished difference Result 315 states and 377 transitions. [2018-09-30 23:12:38,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 23:12:38,649 INFO L78 Accepts]: Start accepts. Automaton has 244 states. Word has length 303 [2018-09-30 23:12:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:12:38,650 INFO L225 Difference]: With dead ends: 315 [2018-09-30 23:12:38,650 INFO L226 Difference]: Without dead ends: 313 [2018-09-30 23:12:38,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34169 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=15186, Invalid=44106, Unknown=0, NotChecked=0, Total=59292 [2018-09-30 23:12:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-09-30 23:12:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2018-09-30 23:12:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-09-30 23:12:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 370 transitions. [2018-09-30 23:12:38,657 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 370 transitions. Word has length 303 [2018-09-30 23:12:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:12:38,658 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 370 transitions. [2018-09-30 23:12:38,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 244 states. [2018-09-30 23:12:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 370 transitions. [2018-09-30 23:12:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-09-30 23:12:38,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:12:38,659 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 61, 1, 1, 1] [2018-09-30 23:12:38,659 INFO L423 AbstractCegarLoop]: === Iteration 63 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:12:38,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:12:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash -120195604, now seen corresponding path program 61 times [2018-09-30 23:12:38,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:12:38,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:12:38,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:38,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:12:38,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:12:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:44,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:12:44,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:12:44,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:12:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:12:44,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:12:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 0 proven. 9211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:12:53,772 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:12:53,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 247 [2018-09-30 23:12:53,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 248 states [2018-09-30 23:12:53,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 248 interpolants. [2018-09-30 23:12:53,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15683, Invalid=45573, Unknown=0, NotChecked=0, Total=61256 [2018-09-30 23:12:53,776 INFO L87 Difference]: Start difference. First operand 309 states and 370 transitions. Second operand 248 states. [2018-09-30 23:12:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:12:56,014 INFO L93 Difference]: Finished difference Result 320 states and 383 transitions. [2018-09-30 23:12:56,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-30 23:12:56,014 INFO L78 Accepts]: Start accepts. Automaton has 248 states. Word has length 308 [2018-09-30 23:12:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:12:56,015 INFO L225 Difference]: With dead ends: 320 [2018-09-30 23:12:56,016 INFO L226 Difference]: Without dead ends: 318 [2018-09-30 23:12:56,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35318 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=15683, Invalid=45573, Unknown=0, NotChecked=0, Total=61256 [2018-09-30 23:12:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-09-30 23:12:56,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2018-09-30 23:12:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2018-09-30 23:12:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 376 transitions. [2018-09-30 23:12:56,025 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 376 transitions. Word has length 308 [2018-09-30 23:12:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:12:56,026 INFO L480 AbstractCegarLoop]: Abstraction has 314 states and 376 transitions. [2018-09-30 23:12:56,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 248 states. [2018-09-30 23:12:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 376 transitions. [2018-09-30 23:12:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-09-30 23:12:56,027 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:12:56,028 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 62, 1, 1, 1] [2018-09-30 23:12:56,028 INFO L423 AbstractCegarLoop]: === Iteration 64 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:12:56,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:12:56,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2068979872, now seen corresponding path program 62 times [2018-09-30 23:12:56,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:12:56,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:12:56,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:56,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:12:56,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:12:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:13:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:01,676 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:13:01,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:13:01,687 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:13:01,756 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:13:01,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:13:01,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:13:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 0 proven. 9517 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:11,452 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:13:11,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 251 [2018-09-30 23:13:11,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 252 states [2018-09-30 23:13:11,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 252 interpolants. [2018-09-30 23:13:11,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16188, Invalid=47064, Unknown=0, NotChecked=0, Total=63252 [2018-09-30 23:13:11,456 INFO L87 Difference]: Start difference. First operand 314 states and 376 transitions. Second operand 252 states. [2018-09-30 23:13:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:13:13,805 INFO L93 Difference]: Finished difference Result 325 states and 389 transitions. [2018-09-30 23:13:13,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-30 23:13:13,805 INFO L78 Accepts]: Start accepts. Automaton has 252 states. Word has length 313 [2018-09-30 23:13:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:13:13,806 INFO L225 Difference]: With dead ends: 325 [2018-09-30 23:13:13,806 INFO L226 Difference]: Without dead ends: 323 [2018-09-30 23:13:13,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36486 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=16188, Invalid=47064, Unknown=0, NotChecked=0, Total=63252 [2018-09-30 23:13:13,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-30 23:13:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2018-09-30 23:13:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-30 23:13:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 382 transitions. [2018-09-30 23:13:13,814 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 382 transitions. Word has length 313 [2018-09-30 23:13:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:13:13,815 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 382 transitions. [2018-09-30 23:13:13,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 252 states. [2018-09-30 23:13:13,815 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 382 transitions. [2018-09-30 23:13:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-30 23:13:13,816 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:13:13,816 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1] [2018-09-30 23:13:13,816 INFO L423 AbstractCegarLoop]: === Iteration 65 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:13:13,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:13:13,817 INFO L82 PathProgramCache]: Analyzing trace with hash 642891372, now seen corresponding path program 63 times [2018-09-30 23:13:13,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:13:13,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:13:13,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:13:13,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:13:13,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:13:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:13:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:19,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:13:19,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:13:19,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:13:19,732 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 23:13:19,732 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:13:19,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:13:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:29,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:13:29,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 255 [2018-09-30 23:13:29,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 256 states [2018-09-30 23:13:29,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2018-09-30 23:13:29,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16701, Invalid=48579, Unknown=0, NotChecked=0, Total=65280 [2018-09-30 23:13:29,869 INFO L87 Difference]: Start difference. First operand 319 states and 382 transitions. Second operand 256 states. [2018-09-30 23:13:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:13:32,216 INFO L93 Difference]: Finished difference Result 330 states and 395 transitions. [2018-09-30 23:13:32,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-30 23:13:32,217 INFO L78 Accepts]: Start accepts. Automaton has 256 states. Word has length 318 [2018-09-30 23:13:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:13:32,218 INFO L225 Difference]: With dead ends: 330 [2018-09-30 23:13:32,218 INFO L226 Difference]: Without dead ends: 328 [2018-09-30 23:13:32,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37673 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=16701, Invalid=48579, Unknown=0, NotChecked=0, Total=65280 [2018-09-30 23:13:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-09-30 23:13:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 324. [2018-09-30 23:13:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-09-30 23:13:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2018-09-30 23:13:32,226 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 318 [2018-09-30 23:13:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:13:32,226 INFO L480 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2018-09-30 23:13:32,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 256 states. [2018-09-30 23:13:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2018-09-30 23:13:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-09-30 23:13:32,227 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:13:32,227 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 64, 1, 1, 1] [2018-09-30 23:13:32,227 INFO L423 AbstractCegarLoop]: === Iteration 66 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:13:32,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:13:32,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1346672928, now seen corresponding path program 64 times [2018-09-30 23:13:32,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:13:32,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:13:32,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:13:32,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:13:32,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:13:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:13:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:38,481 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:13:38,481 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:13:38,489 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:13:38,565 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:13:38,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:13:38,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:13:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 0 proven. 10144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:48,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:13:48,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 259 [2018-09-30 23:13:48,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 260 states [2018-09-30 23:13:48,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 260 interpolants. [2018-09-30 23:13:48,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17222, Invalid=50118, Unknown=0, NotChecked=0, Total=67340 [2018-09-30 23:13:48,963 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 260 states. [2018-09-30 23:13:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:13:51,479 INFO L93 Difference]: Finished difference Result 335 states and 401 transitions. [2018-09-30 23:13:51,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 23:13:51,479 INFO L78 Accepts]: Start accepts. Automaton has 260 states. Word has length 323 [2018-09-30 23:13:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:13:51,481 INFO L225 Difference]: With dead ends: 335 [2018-09-30 23:13:51,481 INFO L226 Difference]: Without dead ends: 333 [2018-09-30 23:13:51,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38879 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=17222, Invalid=50118, Unknown=0, NotChecked=0, Total=67340 [2018-09-30 23:13:51,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-09-30 23:13:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-09-30 23:13:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-09-30 23:13:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 394 transitions. [2018-09-30 23:13:51,491 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 394 transitions. Word has length 323 [2018-09-30 23:13:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:13:51,492 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 394 transitions. [2018-09-30 23:13:51,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 260 states. [2018-09-30 23:13:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 394 transitions. [2018-09-30 23:13:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-30 23:13:51,493 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:13:51,493 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 65, 1, 1, 1] [2018-09-30 23:13:51,494 INFO L423 AbstractCegarLoop]: === Iteration 67 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:13:51,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:13:51,494 INFO L82 PathProgramCache]: Analyzing trace with hash 336389868, now seen corresponding path program 65 times [2018-09-30 23:13:51,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:13:51,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:13:51,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:13:51,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:13:51,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:13:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:13:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:13:57,770 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:13:57,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:13:57,779 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:13:57,920 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 23:13:57,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:13:57,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:14:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 0 proven. 10465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:14:08,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:14:08,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 263 [2018-09-30 23:14:08,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 264 states [2018-09-30 23:14:08,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2018-09-30 23:14:08,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17751, Invalid=51681, Unknown=0, NotChecked=0, Total=69432 [2018-09-30 23:14:08,480 INFO L87 Difference]: Start difference. First operand 329 states and 394 transitions. Second operand 264 states. [2018-09-30 23:14:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:14:11,112 INFO L93 Difference]: Finished difference Result 340 states and 407 transitions. [2018-09-30 23:14:11,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-09-30 23:14:11,113 INFO L78 Accepts]: Start accepts. Automaton has 264 states. Word has length 328 [2018-09-30 23:14:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:14:11,114 INFO L225 Difference]: With dead ends: 340 [2018-09-30 23:14:11,114 INFO L226 Difference]: Without dead ends: 338 [2018-09-30 23:14:11,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40104 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=17751, Invalid=51681, Unknown=0, NotChecked=0, Total=69432 [2018-09-30 23:14:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-09-30 23:14:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 334. [2018-09-30 23:14:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2018-09-30 23:14:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 400 transitions. [2018-09-30 23:14:11,123 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 400 transitions. Word has length 328 [2018-09-30 23:14:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:14:11,123 INFO L480 AbstractCegarLoop]: Abstraction has 334 states and 400 transitions. [2018-09-30 23:14:11,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 264 states. [2018-09-30 23:14:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 400 transitions. [2018-09-30 23:14:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-09-30 23:14:11,124 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:14:11,125 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 66, 1, 1, 1] [2018-09-30 23:14:11,125 INFO L423 AbstractCegarLoop]: === Iteration 68 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:14:11,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:14:11,125 INFO L82 PathProgramCache]: Analyzing trace with hash 992317024, now seen corresponding path program 66 times [2018-09-30 23:14:11,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:14:11,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:14:11,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:14:11,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:14:11,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:14:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:14:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:14:17,571 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:14:17,571 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:14:17,579 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:14:17,715 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 23:14:17,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:14:17,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:14:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 0 proven. 10791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:14:28,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:14:28,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 267 [2018-09-30 23:14:28,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 268 states [2018-09-30 23:14:28,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 268 interpolants. [2018-09-30 23:14:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18288, Invalid=53268, Unknown=0, NotChecked=0, Total=71556 [2018-09-30 23:14:28,660 INFO L87 Difference]: Start difference. First operand 334 states and 400 transitions. Second operand 268 states. [2018-09-30 23:14:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:14:31,389 INFO L93 Difference]: Finished difference Result 345 states and 413 transitions. [2018-09-30 23:14:31,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-09-30 23:14:31,389 INFO L78 Accepts]: Start accepts. Automaton has 268 states. Word has length 333 [2018-09-30 23:14:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:14:31,391 INFO L225 Difference]: With dead ends: 345 [2018-09-30 23:14:31,391 INFO L226 Difference]: Without dead ends: 343 [2018-09-30 23:14:31,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41348 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=18288, Invalid=53268, Unknown=0, NotChecked=0, Total=71556 [2018-09-30 23:14:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-30 23:14:31,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 339. [2018-09-30 23:14:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-30 23:14:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 406 transitions. [2018-09-30 23:14:31,398 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 406 transitions. Word has length 333 [2018-09-30 23:14:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:14:31,399 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 406 transitions. [2018-09-30 23:14:31,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 268 states. [2018-09-30 23:14:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 406 transitions. [2018-09-30 23:14:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-30 23:14:31,400 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:14:31,400 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 67, 1, 1, 1] [2018-09-30 23:14:31,400 INFO L423 AbstractCegarLoop]: === Iteration 69 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:14:31,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:14:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2108723348, now seen corresponding path program 67 times [2018-09-30 23:14:31,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:14:31,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:14:31,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:14:31,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:14:31,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:14:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:14:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:14:37,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:14:37,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:14:37,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:14:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:14:37,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:14:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 0 proven. 11122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:14:49,221 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:14:49,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 271 [2018-09-30 23:14:49,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 272 states [2018-09-30 23:14:49,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 272 interpolants. [2018-09-30 23:14:49,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18833, Invalid=54879, Unknown=0, NotChecked=0, Total=73712 [2018-09-30 23:14:49,226 INFO L87 Difference]: Start difference. First operand 339 states and 406 transitions. Second operand 272 states. [2018-09-30 23:14:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:14:52,088 INFO L93 Difference]: Finished difference Result 350 states and 419 transitions. [2018-09-30 23:14:52,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-30 23:14:52,089 INFO L78 Accepts]: Start accepts. Automaton has 272 states. Word has length 338 [2018-09-30 23:14:52,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:14:52,090 INFO L225 Difference]: With dead ends: 350 [2018-09-30 23:14:52,090 INFO L226 Difference]: Without dead ends: 348 [2018-09-30 23:14:52,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42611 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=18833, Invalid=54879, Unknown=0, NotChecked=0, Total=73712 [2018-09-30 23:14:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-09-30 23:14:52,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 344. [2018-09-30 23:14:52,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-09-30 23:14:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 412 transitions. [2018-09-30 23:14:52,098 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 412 transitions. Word has length 338 [2018-09-30 23:14:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:14:52,098 INFO L480 AbstractCegarLoop]: Abstraction has 344 states and 412 transitions. [2018-09-30 23:14:52,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 272 states. [2018-09-30 23:14:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 412 transitions. [2018-09-30 23:14:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-30 23:14:52,099 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:14:52,100 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 68, 1, 1, 1] [2018-09-30 23:14:52,100 INFO L423 AbstractCegarLoop]: === Iteration 70 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:14:52,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:14:52,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1403278816, now seen corresponding path program 68 times [2018-09-30 23:14:52,100 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:14:52,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:14:52,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:14:52,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:14:52,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:14:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:14:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:14:58,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:14:58,534 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:14:58,543 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:14:58,621 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:14:58,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:14:58,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:15:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 0 proven. 11458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:15:10,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:15:10,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 275 [2018-09-30 23:15:10,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 276 states [2018-09-30 23:15:10,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 276 interpolants. [2018-09-30 23:15:10,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19386, Invalid=56514, Unknown=0, NotChecked=0, Total=75900 [2018-09-30 23:15:10,567 INFO L87 Difference]: Start difference. First operand 344 states and 412 transitions. Second operand 276 states. [2018-09-30 23:15:13,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:15:13,639 INFO L93 Difference]: Finished difference Result 355 states and 425 transitions. [2018-09-30 23:15:13,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-09-30 23:15:13,640 INFO L78 Accepts]: Start accepts. Automaton has 276 states. Word has length 343 [2018-09-30 23:15:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:15:13,641 INFO L225 Difference]: With dead ends: 355 [2018-09-30 23:15:13,641 INFO L226 Difference]: Without dead ends: 353 [2018-09-30 23:15:13,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43893 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=19386, Invalid=56514, Unknown=0, NotChecked=0, Total=75900 [2018-09-30 23:15:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-09-30 23:15:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 349. [2018-09-30 23:15:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-09-30 23:15:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 418 transitions. [2018-09-30 23:15:13,649 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 418 transitions. Word has length 343 [2018-09-30 23:15:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:15:13,650 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 418 transitions. [2018-09-30 23:15:13,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 276 states. [2018-09-30 23:15:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 418 transitions. [2018-09-30 23:15:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-09-30 23:15:13,651 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:15:13,651 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 69, 1, 1, 1] [2018-09-30 23:15:13,651 INFO L423 AbstractCegarLoop]: === Iteration 71 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:15:13,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:15:13,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2002868204, now seen corresponding path program 69 times [2018-09-30 23:15:13,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:15:13,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:15:13,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:15:13,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:15:13,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:15:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:15:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:15:20,704 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:15:20,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:15:20,712 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:15:20,855 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 23:15:20,855 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:15:20,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:15:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 0 proven. 11799 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:15:32,552 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:15:32,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 279 [2018-09-30 23:15:32,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 280 states [2018-09-30 23:15:32,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 280 interpolants. [2018-09-30 23:15:32,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19947, Invalid=58173, Unknown=0, NotChecked=0, Total=78120 [2018-09-30 23:15:32,557 INFO L87 Difference]: Start difference. First operand 349 states and 418 transitions. Second operand 280 states. [2018-09-30 23:15:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:15:35,742 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2018-09-30 23:15:35,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-09-30 23:15:35,742 INFO L78 Accepts]: Start accepts. Automaton has 280 states. Word has length 348 [2018-09-30 23:15:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:15:35,744 INFO L225 Difference]: With dead ends: 360 [2018-09-30 23:15:35,744 INFO L226 Difference]: Without dead ends: 358 [2018-09-30 23:15:35,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45194 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=19947, Invalid=58173, Unknown=0, NotChecked=0, Total=78120 [2018-09-30 23:15:35,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-09-30 23:15:35,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2018-09-30 23:15:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-09-30 23:15:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 424 transitions. [2018-09-30 23:15:35,752 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 424 transitions. Word has length 348 [2018-09-30 23:15:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:15:35,752 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 424 transitions. [2018-09-30 23:15:35,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 280 states. [2018-09-30 23:15:35,752 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 424 transitions. [2018-09-30 23:15:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-30 23:15:35,753 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:15:35,753 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 70, 1, 1, 1] [2018-09-30 23:15:35,754 INFO L423 AbstractCegarLoop]: === Iteration 72 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:15:35,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:15:35,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1611678368, now seen corresponding path program 70 times [2018-09-30 23:15:35,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:15:35,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:15:35,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:15:35,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:15:35,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:15:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:15:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:15:42,823 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:15:42,823 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:15:42,831 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:15:42,915 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:15:42,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:15:42,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:15:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 0 proven. 12145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:15:55,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:15:55,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 283 [2018-09-30 23:15:55,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 284 states [2018-09-30 23:15:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 284 interpolants. [2018-09-30 23:15:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20516, Invalid=59856, Unknown=0, NotChecked=0, Total=80372 [2018-09-30 23:15:55,063 INFO L87 Difference]: Start difference. First operand 354 states and 424 transitions. Second operand 284 states. [2018-09-30 23:15:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:15:58,322 INFO L93 Difference]: Finished difference Result 365 states and 437 transitions. [2018-09-30 23:15:58,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-09-30 23:15:58,322 INFO L78 Accepts]: Start accepts. Automaton has 284 states. Word has length 353 [2018-09-30 23:15:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:15:58,323 INFO L225 Difference]: With dead ends: 365 [2018-09-30 23:15:58,323 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 23:15:58,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46514 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=20516, Invalid=59856, Unknown=0, NotChecked=0, Total=80372 [2018-09-30 23:15:58,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 23:15:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2018-09-30 23:15:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-30 23:15:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 430 transitions. [2018-09-30 23:15:58,332 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 430 transitions. Word has length 353 [2018-09-30 23:15:58,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:15:58,332 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 430 transitions. [2018-09-30 23:15:58,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 284 states. [2018-09-30 23:15:58,332 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 430 transitions. [2018-09-30 23:15:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-30 23:15:58,333 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:15:58,334 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 71, 1, 1, 1] [2018-09-30 23:15:58,334 INFO L423 AbstractCegarLoop]: === Iteration 73 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:15:58,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:15:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1081434004, now seen corresponding path program 71 times [2018-09-30 23:15:58,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:15:58,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:15:58,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:15:58,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:15:58,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:15:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:16:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:16:05,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:16:05,816 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:16:05,824 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:16:05,975 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 23:16:05,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:16:05,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:16:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 0 proven. 12496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:16:18,820 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:16:18,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 287 [2018-09-30 23:16:18,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 288 states [2018-09-30 23:16:18,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 288 interpolants. [2018-09-30 23:16:18,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21093, Invalid=61563, Unknown=0, NotChecked=0, Total=82656 [2018-09-30 23:16:18,825 INFO L87 Difference]: Start difference. First operand 359 states and 430 transitions. Second operand 288 states. [2018-09-30 23:16:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:16:22,069 INFO L93 Difference]: Finished difference Result 370 states and 443 transitions. [2018-09-30 23:16:22,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-09-30 23:16:22,069 INFO L78 Accepts]: Start accepts. Automaton has 288 states. Word has length 358 [2018-09-30 23:16:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:16:22,071 INFO L225 Difference]: With dead ends: 370 [2018-09-30 23:16:22,071 INFO L226 Difference]: Without dead ends: 368 [2018-09-30 23:16:22,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47853 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=21093, Invalid=61563, Unknown=0, NotChecked=0, Total=82656 [2018-09-30 23:16:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-09-30 23:16:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 364. [2018-09-30 23:16:22,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-09-30 23:16:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 436 transitions. [2018-09-30 23:16:22,080 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 436 transitions. Word has length 358 [2018-09-30 23:16:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:16:22,081 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 436 transitions. [2018-09-30 23:16:22,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 288 states. [2018-09-30 23:16:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 436 transitions. [2018-09-30 23:16:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-30 23:16:22,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:16:22,082 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 72, 1, 1, 1] [2018-09-30 23:16:22,083 INFO L423 AbstractCegarLoop]: === Iteration 74 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:16:22,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:16:22,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1061174048, now seen corresponding path program 72 times [2018-09-30 23:16:22,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:16:22,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:16:22,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:16:22,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:16:22,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:16:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:16:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:16:29,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:16:29,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:16:29,547 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 23:16:29,698 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 23:16:29,698 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:16:29,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:16:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 0 proven. 12852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:16:42,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:16:42,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 291 [2018-09-30 23:16:42,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 292 states [2018-09-30 23:16:42,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 292 interpolants. [2018-09-30 23:16:42,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21678, Invalid=63294, Unknown=0, NotChecked=0, Total=84972 [2018-09-30 23:16:42,712 INFO L87 Difference]: Start difference. First operand 364 states and 436 transitions. Second operand 292 states. [2018-09-30 23:16:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:16:46,144 INFO L93 Difference]: Finished difference Result 375 states and 449 transitions. [2018-09-30 23:16:46,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-09-30 23:16:46,144 INFO L78 Accepts]: Start accepts. Automaton has 292 states. Word has length 363 [2018-09-30 23:16:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:16:46,146 INFO L225 Difference]: With dead ends: 375 [2018-09-30 23:16:46,146 INFO L226 Difference]: Without dead ends: 373 [2018-09-30 23:16:46,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49211 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=21678, Invalid=63294, Unknown=0, NotChecked=0, Total=84972 [2018-09-30 23:16:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-09-30 23:16:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 369. [2018-09-30 23:16:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-09-30 23:16:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 442 transitions. [2018-09-30 23:16:46,154 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 442 transitions. Word has length 363 [2018-09-30 23:16:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:16:46,155 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 442 transitions. [2018-09-30 23:16:46,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 292 states. [2018-09-30 23:16:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 442 transitions. [2018-09-30 23:16:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-30 23:16:46,156 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:16:46,156 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 73, 1, 1, 1] [2018-09-30 23:16:46,156 INFO L423 AbstractCegarLoop]: === Iteration 75 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:16:46,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:16:46,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1829980396, now seen corresponding path program 73 times [2018-09-30 23:16:46,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:16:46,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:16:46,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:16:46,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:16:46,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:16:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:16:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:16:54,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:16:54,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:16:54,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:16:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:16:54,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:17:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 0 proven. 13213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:17:07,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:17:07,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 295 [2018-09-30 23:17:07,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 296 states [2018-09-30 23:17:07,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 296 interpolants. [2018-09-30 23:17:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22271, Invalid=65049, Unknown=0, NotChecked=0, Total=87320 [2018-09-30 23:17:07,378 INFO L87 Difference]: Start difference. First operand 369 states and 442 transitions. Second operand 296 states. [2018-09-30 23:17:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:17:11,433 INFO L93 Difference]: Finished difference Result 380 states and 455 transitions. [2018-09-30 23:17:11,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-09-30 23:17:11,433 INFO L78 Accepts]: Start accepts. Automaton has 296 states. Word has length 368 [2018-09-30 23:17:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:17:11,434 INFO L225 Difference]: With dead ends: 380 [2018-09-30 23:17:11,435 INFO L226 Difference]: Without dead ends: 378 [2018-09-30 23:17:11,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50588 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=22271, Invalid=65049, Unknown=0, NotChecked=0, Total=87320 [2018-09-30 23:17:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-09-30 23:17:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2018-09-30 23:17:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2018-09-30 23:17:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 448 transitions. [2018-09-30 23:17:11,443 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 448 transitions. Word has length 368 [2018-09-30 23:17:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:17:11,443 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 448 transitions. [2018-09-30 23:17:11,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 296 states. [2018-09-30 23:17:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 448 transitions. [2018-09-30 23:17:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-09-30 23:17:11,445 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:17:11,445 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 1, 1, 1] [2018-09-30 23:17:11,445 INFO L423 AbstractCegarLoop]: === Iteration 76 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:17:11,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:17:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash -791909280, now seen corresponding path program 74 times [2018-09-30 23:17:11,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:17:11,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:17:11,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:17:11,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 23:17:11,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:17:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:17:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 0 proven. 13579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:17:19,558 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:17:19,558 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:17:19,565 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 23:17:19,650 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 23:17:19,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:17:19,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:17:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 0 proven. 13579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:17:33,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:17:33,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 299 [2018-09-30 23:17:33,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 300 states [2018-09-30 23:17:33,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 300 interpolants. [2018-09-30 23:17:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22872, Invalid=66828, Unknown=0, NotChecked=0, Total=89700 [2018-09-30 23:17:33,122 INFO L87 Difference]: Start difference. First operand 374 states and 448 transitions. Second operand 300 states. [2018-09-30 23:17:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:17:36,973 INFO L93 Difference]: Finished difference Result 385 states and 461 transitions. [2018-09-30 23:17:36,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-09-30 23:17:36,973 INFO L78 Accepts]: Start accepts. Automaton has 300 states. Word has length 373 [2018-09-30 23:17:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:17:36,974 INFO L225 Difference]: With dead ends: 385 [2018-09-30 23:17:36,975 INFO L226 Difference]: Without dead ends: 383 [2018-09-30 23:17:36,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 298 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51984 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=22872, Invalid=66828, Unknown=0, NotChecked=0, Total=89700 [2018-09-30 23:17:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-30 23:17:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 379. [2018-09-30 23:17:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-30 23:17:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 454 transitions. [2018-09-30 23:17:36,983 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 454 transitions. Word has length 373 [2018-09-30 23:17:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:17:36,984 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 454 transitions. [2018-09-30 23:17:36,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 300 states. [2018-09-30 23:17:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 454 transitions. [2018-09-30 23:17:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-30 23:17:36,985 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:17:36,985 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 75, 1, 1, 1] [2018-09-30 23:17:36,985 INFO L423 AbstractCegarLoop]: === Iteration 77 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:17:36,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:17:36,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1480806764, now seen corresponding path program 75 times [2018-09-30 23:17:36,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:17:36,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:17:36,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:17:36,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:17:36,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:17:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:17:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 0 proven. 13950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:17:45,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:17:45,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:17:45,181 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 23:17:45,345 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 23:17:45,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:17:45,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:17:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 0 proven. 13950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:17:59,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:17:59,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 303 [2018-09-30 23:17:59,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 304 states [2018-09-30 23:17:59,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 304 interpolants. [2018-09-30 23:17:59,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23481, Invalid=68631, Unknown=0, NotChecked=0, Total=92112 [2018-09-30 23:17:59,368 INFO L87 Difference]: Start difference. First operand 379 states and 454 transitions. Second operand 304 states. [2018-09-30 23:18:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:18:03,385 INFO L93 Difference]: Finished difference Result 390 states and 467 transitions. [2018-09-30 23:18:03,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-09-30 23:18:03,385 INFO L78 Accepts]: Start accepts. Automaton has 304 states. Word has length 378 [2018-09-30 23:18:03,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:18:03,387 INFO L225 Difference]: With dead ends: 390 [2018-09-30 23:18:03,387 INFO L226 Difference]: Without dead ends: 388 [2018-09-30 23:18:03,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53399 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=23481, Invalid=68631, Unknown=0, NotChecked=0, Total=92112 [2018-09-30 23:18:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-09-30 23:18:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 384. [2018-09-30 23:18:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-09-30 23:18:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 460 transitions. [2018-09-30 23:18:03,396 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 460 transitions. Word has length 378 [2018-09-30 23:18:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:18:03,396 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 460 transitions. [2018-09-30 23:18:03,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 304 states. [2018-09-30 23:18:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 460 transitions. [2018-09-30 23:18:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-09-30 23:18:03,398 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:18:03,398 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 76, 1, 1, 1] [2018-09-30 23:18:03,398 INFO L423 AbstractCegarLoop]: === Iteration 78 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:18:03,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:18:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash -456281120, now seen corresponding path program 76 times [2018-09-30 23:18:03,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:18:03,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:18:03,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:18:03,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:18:03,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:18:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:18:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14326 backedges. 0 proven. 14326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:18:11,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:18:11,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:18:11,926 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 23:18:12,018 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 23:18:12,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:18:12,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:18:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14326 backedges. 0 proven. 14326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:18:26,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:18:26,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 307 [2018-09-30 23:18:26,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 308 states [2018-09-30 23:18:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 308 interpolants. [2018-09-30 23:18:26,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24098, Invalid=70458, Unknown=0, NotChecked=0, Total=94556 [2018-09-30 23:18:26,319 INFO L87 Difference]: Start difference. First operand 384 states and 460 transitions. Second operand 308 states. [2018-09-30 23:18:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:18:30,430 INFO L93 Difference]: Finished difference Result 395 states and 473 transitions. [2018-09-30 23:18:30,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-09-30 23:18:30,431 INFO L78 Accepts]: Start accepts. Automaton has 308 states. Word has length 383 [2018-09-30 23:18:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:18:30,432 INFO L225 Difference]: With dead ends: 395 [2018-09-30 23:18:30,432 INFO L226 Difference]: Without dead ends: 393 [2018-09-30 23:18:30,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54833 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=24098, Invalid=70458, Unknown=0, NotChecked=0, Total=94556 [2018-09-30 23:18:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-09-30 23:18:30,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2018-09-30 23:18:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-09-30 23:18:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 466 transitions. [2018-09-30 23:18:30,441 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 466 transitions. Word has length 383 [2018-09-30 23:18:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:18:30,442 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 466 transitions. [2018-09-30 23:18:30,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 308 states. [2018-09-30 23:18:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 466 transitions. [2018-09-30 23:18:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-09-30 23:18:30,443 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:18:30,443 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 77, 1, 1, 1] [2018-09-30 23:18:30,444 INFO L423 AbstractCegarLoop]: === Iteration 79 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:18:30,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:18:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1620919828, now seen corresponding path program 77 times [2018-09-30 23:18:30,444 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:18:30,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:18:30,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:18:30,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:18:30,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:18:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:18:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14707 backedges. 0 proven. 14707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:18:38,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:18:38,827 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:18:38,834 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 23:18:39,002 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 23:18:39,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:18:39,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:18:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14707 backedges. 0 proven. 14707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:18:53,748 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 23:18:53,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 311 [2018-09-30 23:18:53,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 312 states [2018-09-30 23:18:53,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 312 interpolants. [2018-09-30 23:18:53,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24723, Invalid=72309, Unknown=0, NotChecked=0, Total=97032 [2018-09-30 23:18:53,753 INFO L87 Difference]: Start difference. First operand 389 states and 466 transitions. Second operand 312 states. [2018-09-30 23:18:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 23:18:57,898 INFO L93 Difference]: Finished difference Result 400 states and 479 transitions. [2018-09-30 23:18:57,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-09-30 23:18:57,898 INFO L78 Accepts]: Start accepts. Automaton has 312 states. Word has length 388 [2018-09-30 23:18:57,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 23:18:57,900 INFO L225 Difference]: With dead ends: 400 [2018-09-30 23:18:57,900 INFO L226 Difference]: Without dead ends: 398 [2018-09-30 23:18:57,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56286 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=24723, Invalid=72309, Unknown=0, NotChecked=0, Total=97032 [2018-09-30 23:18:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-09-30 23:18:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2018-09-30 23:18:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-09-30 23:18:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 472 transitions. [2018-09-30 23:18:57,909 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 472 transitions. Word has length 388 [2018-09-30 23:18:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 23:18:57,909 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 472 transitions. [2018-09-30 23:18:57,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 312 states. [2018-09-30 23:18:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 472 transitions. [2018-09-30 23:18:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-30 23:18:57,911 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 23:18:57,911 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 78, 1, 1, 1] [2018-09-30 23:18:57,911 INFO L423 AbstractCegarLoop]: === Iteration 80 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 23:18:57,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 23:18:57,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1954833568, now seen corresponding path program 78 times [2018-09-30 23:18:57,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 23:18:57,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 23:18:57,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:18:57,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 23:18:57,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 23:18:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 23:19:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15093 backedges. 0 proven. 15093 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 23:19:06,723 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 23:19:06,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:19:06,731 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Received shutdown request... [2018-09-30 23:19:06,914 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 23:19:06,914 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 23:19:06,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 23:19:06,922 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-30 23:19:07,123 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 23:19:07,123 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 23:19:07,128 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 23:19:07,129 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:19:07 BoogieIcfgContainer [2018-09-30 23:19:07,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 23:19:07,130 INFO L168 Benchmark]: Toolchain (without parser) took 780743.86 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 154.1 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 288.1 MB). Peak memory consumption was 442.2 MB. Max. memory is 7.1 GB. [2018-09-30 23:19:07,130 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 23:19:07,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.63 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 23:19:07,131 INFO L168 Benchmark]: Boogie Preprocessor took 24.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 23:19:07,131 INFO L168 Benchmark]: RCFGBuilder took 401.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 23:19:07,132 INFO L168 Benchmark]: TraceAbstraction took 780270.33 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 154.1 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 266.9 MB). Peak memory consumption was 421.1 MB. Max. memory is 7.1 GB. [2018-09-30 23:19:07,134 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 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.63 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 401.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 780270.33 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 154.1 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 266.9 MB). Peak memory consumption was 421.1 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 394 with TraceHistMax 78, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 780.1s OverallTime, 80 OverallIterations, 78 TraceHistogramMax, 100.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 795 SDtfs, 42767 SDslu, 36596 SDs, 0 SdLazy, 37425 SolverSat, 7915 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21333 GetRequests, 9165 SyntacticMatches, 0 SemanticMatches, 12168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472394 ImplicationChecksByTransitivity, 631.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=79, 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: 0.5s AutomataMinimizationTime, 79 MinimizatonAttempts, 313 StatesRemovedByMinimization, 78 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.4s SatisfiabilityAnalysisTime, 656.5s InterpolantComputationTime, 30503 NumberOfCodeBlocks, 30503 NumberOfCodeBlocksAsserted, 1690 NumberOfCheckSat, 30347 ConstructedInterpolants, 15092 QuantifiedInterpolants, 77714929 SizeOfPredicates, 3234 NumberOfNonLiveVariables, 25256 ConjunctsInSsa, 6314 ConjunctsInUnsatCore, 156 InterpolantComputations, 2 PerfectInterpolantSequences, 1/766767 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.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_23-19-07-143.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_23-19-07-143.csv Completed graceful shutdown