java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:42:32,974 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:42:32,977 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:42:32,989 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:42:32,990 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:42:32,991 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:42:32,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:42:32,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:42:32,997 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:42:32,998 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:42:32,999 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:42:33,026 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 10:42:33,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:42:33,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:42:33,044 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:42:33,044 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:42:33,044 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:42:33,045 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:42:33,045 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:42:33,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:42:33,045 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:42:33,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:42:33,046 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:42:33,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:42:33,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:42:33,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:42:33,047 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:42:33,047 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:42:33,047 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:42:33,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:42:33,048 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:42:33,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:42:33,048 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:42:33,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:42:33,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:42:33,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:42:33,049 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:42:33,049 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:42:33,049 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:42:33,049 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:42:33,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:42:33,050 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:42:33,050 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:42:33,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:42:33,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:42:33,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:42:33,132 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:42:33,133 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:42:33,134 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-09-30 10:42:33,134 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-09-30 10:42:33,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:42:33,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:42:33,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:42:33,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:42:33,189 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:42:33,212 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 10:42:33" (1/1) ... [2018-09-30 10:42:33,227 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 10:42:33" (1/1) ... [2018-09-30 10:42:33,232 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:42:33,232 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:42:33,232 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:42:33,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:42:33,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:42:33,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:42:33,237 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:42:33,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/1) ... [2018-09-30 10:42:33,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:42:33,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:42:33,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:42:33,268 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:42:33,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (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 10:42:33,346 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-30 10:42:33,346 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-30 10:42:33,346 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-30 10:42:33,574 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:42:33,575 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:42:33 BoogieIcfgContainer [2018-09-30 10:42:33,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:42:33,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:42:33,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:42:33,582 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:42:33,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:33" (1/2) ... [2018-09-30 10:42:33,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72455c33 and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:42:33, skipping insertion in model container [2018-09-30 10:42:33,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:42:33" (2/2) ... [2018-09-30 10:42:33,588 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-09-30 10:42:33,597 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:42:33,606 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:42:33,653 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:42:33,654 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:42:33,655 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:42:33,655 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:42:33,655 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:42:33,655 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:42:33,656 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:42:33,656 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:42:33,656 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:42:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 10:42:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 10:42:33,679 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:33,680 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 10:42:33,682 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:33,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:33,690 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-09-30 10:42:33,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:33,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:33,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:33,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:33,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:33,838 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 10:42:33,841 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:42:33,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:42:33,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:42:33,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:42:33,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:33,861 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 10:42:34,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:34,085 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-09-30 10:42:34,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:42:34,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 10:42:34,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:34,100 INFO L225 Difference]: With dead ends: 19 [2018-09-30 10:42:34,100 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 10:42:34,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 10:42:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-30 10:42:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 10:42:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-30 10:42:34,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-09-30 10:42:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:34,141 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-30 10:42:34,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:42:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-30 10:42:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:42:34,142 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:34,142 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:42:34,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:34,143 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:34,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-09-30 10:42:34,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:34,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:34,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:34,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:34,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:34,251 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 10:42:34,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:34,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:42:34,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:34,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:34,539 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 10:42:34,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:34,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-30 10:42:34,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:42:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:42:34,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:34,564 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-09-30 10:42:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:35,023 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 10:42:35,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:42:35,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 10:42:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:35,025 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:42:35,025 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 10:42:35,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 10:42:35,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-09-30 10:42:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 10:42:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-30 10:42:35,031 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-30 10:42:35,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:35,032 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-30 10:42:35,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:42:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-30 10:42:35,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:42:35,033 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:35,033 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:42:35,034 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:35,034 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-09-30 10:42:35,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:35,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:35,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:35,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:35,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:35,104 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 10:42:35,104 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:42:35,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:42:35,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:42:35,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:42:35,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:35,107 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-09-30 10:42:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:35,124 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 10:42:35,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:42:35,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-30 10:42:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:35,125 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:42:35,125 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 10:42:35,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:35,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 10:42:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 10:42:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 10:42:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-30 10:42:35,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-09-30 10:42:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:35,131 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-30 10:42:35,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:42:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-30 10:42:35,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 10:42:35,132 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:35,132 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-30 10:42:35,132 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:35,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-09-30 10:42:35,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:35,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:35,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:35,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:35,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:35,237 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 10:42:35,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:35,238 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 10:42:35,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:42:35,277 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:42:35,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:35,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:35,632 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 10:42:35,653 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:35,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-30 10:42:35,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:42:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:42:35,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:35,655 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-09-30 10:42:36,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:36,426 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-30 10:42:36,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:42:36,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-09-30 10:42:36,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:36,428 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:42:36,428 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:42:36,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:42:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-30 10:42:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:42:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-09-30 10:42:36,433 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-09-30 10:42:36,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:36,434 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-09-30 10:42:36,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:42:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-09-30 10:42:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:42:36,435 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:36,435 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-30 10:42:36,436 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:36,436 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-09-30 10:42:36,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:36,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:36,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:36,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:36,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:36,684 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 10:42:36,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:36,684 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 10:42:36,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:42:36,717 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 10:42:36,717 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:36,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:37,089 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 10:42:37,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:37,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-30 10:42:37,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:42:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:42:37,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:37,121 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-09-30 10:42:37,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:37,440 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-30 10:42:37,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:42:37,443 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 10:42:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:37,444 INFO L225 Difference]: With dead ends: 30 [2018-09-30 10:42:37,444 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 10:42:37,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 10:42:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-30 10:42:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 10:42:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-09-30 10:42:37,455 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-09-30 10:42:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:37,456 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-09-30 10:42:37,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:42:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-09-30 10:42:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 10:42:37,460 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:37,460 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-30 10:42:37,460 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:37,460 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-09-30 10:42:37,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:37,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:37,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:37,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:37,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:37,686 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 10:42:37,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:37,687 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 10:42:37,700 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:42:37,713 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:42:37,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:37,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:38,134 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 10:42:38,156 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:38,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 10:42:38,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:42:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:42:38,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:38,157 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-09-30 10:42:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:38,720 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-30 10:42:38,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:42:38,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-09-30 10:42:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:38,721 INFO L225 Difference]: With dead ends: 35 [2018-09-30 10:42:38,721 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 10:42:38,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:38,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 10:42:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-30 10:42:38,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 10:42:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-09-30 10:42:38,729 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-09-30 10:42:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:38,729 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-09-30 10:42:38,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:42:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-09-30 10:42:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 10:42:38,730 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:38,731 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-30 10:42:38,731 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:38,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-09-30 10:42:38,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:38,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:38,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:38,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:38,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:38,898 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 10:42:38,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:38,898 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 10:42:38,906 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:42:38,920 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 10:42:38,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:38,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:40,043 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 10:42:40,065 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:40,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-30 10:42:40,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:42:40,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:42:40,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:40,067 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-09-30 10:42:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:40,660 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-09-30 10:42:40,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:42:40,660 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-09-30 10:42:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:40,661 INFO L225 Difference]: With dead ends: 40 [2018-09-30 10:42:40,662 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 10:42:40,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 10:42:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-30 10:42:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 10:42:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-30 10:42:40,667 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-09-30 10:42:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:40,668 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-30 10:42:40,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:42:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-30 10:42:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 10:42:40,669 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:40,669 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-30 10:42:40,669 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:40,670 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:40,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-09-30 10:42:40,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:40,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:40,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:40,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:40,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:40,845 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 10:42:40,846 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:40,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:42:40,856 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:42:40,874 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 10:42:40,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:40,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:41,402 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 10:42:41,432 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:41,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-30 10:42:41,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:42:41,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:42:41,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:41,434 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-09-30 10:42:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:42,017 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-09-30 10:42:42,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:42:42,018 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-09-30 10:42:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:42,018 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:42:42,019 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:42:42,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:42,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:42:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-30 10:42:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 10:42:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-09-30 10:42:42,024 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-09-30 10:42:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:42,025 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-09-30 10:42:42,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:42:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-09-30 10:42:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:42:42,026 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:42,026 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-30 10:42:42,027 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:42,027 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-09-30 10:42:42,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:42,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:42,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:42,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:42,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:42,230 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 10:42:42,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:42,230 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 10:42:42,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:42,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:42,738 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 10:42:42,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:42,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-30 10:42:42,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:42:42,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:42:42,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:42,761 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-09-30 10:42:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:43,599 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-09-30 10:42:43,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:42:43,599 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-09-30 10:42:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:43,600 INFO L225 Difference]: With dead ends: 50 [2018-09-30 10:42:43,600 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 10:42:43,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 10:42:43,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-30 10:42:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 10:42:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-30 10:42:43,606 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-09-30 10:42:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:43,607 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-30 10:42:43,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:42:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-30 10:42:43,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 10:42:43,608 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:43,608 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-30 10:42:43,609 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:43,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-09-30 10:42:43,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:43,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:43,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:43,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:43,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:43,893 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 10:42:43,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:43,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:42:43,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:42:43,918 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:42:43,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:43,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:44,533 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 10:42:44,565 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:44,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-30 10:42:44,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:42:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:42:44,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:44,566 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-09-30 10:42:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:45,078 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-09-30 10:42:45,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:42:45,079 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-09-30 10:42:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:45,079 INFO L225 Difference]: With dead ends: 55 [2018-09-30 10:42:45,080 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 10:42:45,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 10:42:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-30 10:42:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 10:42:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-09-30 10:42:45,088 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-09-30 10:42:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:45,089 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-09-30 10:42:45,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:42:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-09-30 10:42:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 10:42:45,090 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:45,090 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-30 10:42:45,090 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:45,090 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-09-30 10:42:45,091 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:45,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:45,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:45,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:45,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:45,283 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 10:42:45,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:45,284 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 10:42:45,292 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:42:45,336 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 10:42:45,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:45,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:46,380 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 10:42:46,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:46,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-30 10:42:46,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:42:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:42:46,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:46,402 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-09-30 10:42:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:47,014 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-09-30 10:42:47,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:42:47,014 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-09-30 10:42:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:47,015 INFO L225 Difference]: With dead ends: 60 [2018-09-30 10:42:47,015 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 10:42:47,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:47,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 10:42:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-30 10:42:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 10:42:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-09-30 10:42:47,022 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-09-30 10:42:47,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:47,022 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-09-30 10:42:47,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:42:47,023 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-09-30 10:42:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 10:42:47,023 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:47,024 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-30 10:42:47,024 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:47,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:47,024 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-09-30 10:42:47,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:47,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:47,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:47,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:47,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:47,687 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 10:42:47,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:47,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:42:47,697 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:42:47,738 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:42:47,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:47,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:48,728 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 10:42:48,748 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:48,749 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-30 10:42:48,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:42:48,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:42:48,750 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:48,750 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-09-30 10:42:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:49,986 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-30 10:42:49,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:42:49,986 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-09-30 10:42:49,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:49,987 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:42:49,987 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 10:42:49,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 10:42:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-30 10:42:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:42:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-09-30 10:42:49,993 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-09-30 10:42:49,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:49,994 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-09-30 10:42:49,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:42:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-09-30 10:42:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 10:42:49,995 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:49,995 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-30 10:42:49,995 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:49,996 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:49,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-09-30 10:42:49,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:49,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:49,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:49,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:49,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:50,244 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 10:42:50,244 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:50,244 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 10:42:50,253 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:42:50,271 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 10:42:50,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:50,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:50,967 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 10:42:50,990 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:50,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-30 10:42:50,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:42:50,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:42:50,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:50,991 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-09-30 10:42:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:51,801 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-09-30 10:42:51,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:42:51,801 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-09-30 10:42:51,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:51,802 INFO L225 Difference]: With dead ends: 70 [2018-09-30 10:42:51,802 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 10:42:51,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 10:42:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-30 10:42:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 10:42:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-09-30 10:42:51,808 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-09-30 10:42:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:51,808 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-09-30 10:42:51,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:42:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-09-30 10:42:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 10:42:51,810 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:51,810 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-30 10:42:51,810 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:51,810 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-09-30 10:42:51,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:51,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:51,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:51,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:51,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:52,227 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 10:42:52,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:52,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:42:52,235 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:42:52,256 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 10:42:52,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:52,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:52,938 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 10:42:52,960 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:52,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-30 10:42:52,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:42:52,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:42:52,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:52,961 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-09-30 10:42:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:53,689 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-09-30 10:42:53,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:42:53,690 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-09-30 10:42:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:53,690 INFO L225 Difference]: With dead ends: 75 [2018-09-30 10:42:53,691 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 10:42:53,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 10:42:53,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-30 10:42:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 10:42:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-09-30 10:42:53,697 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-09-30 10:42:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:53,698 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-09-30 10:42:53,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:42:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-09-30 10:42:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 10:42:53,700 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:53,700 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-30 10:42:53,700 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:53,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-09-30 10:42:53,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:53,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:53,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:53,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:53,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:53,971 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 10:42:53,971 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:53,971 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 10:42:53,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:54,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:54,699 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 10:42:54,719 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:54,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-30 10:42:54,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:42:54,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:42:54,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:54,721 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-09-30 10:42:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:55,780 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-09-30 10:42:55,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:42:55,780 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-09-30 10:42:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:55,781 INFO L225 Difference]: With dead ends: 80 [2018-09-30 10:42:55,781 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 10:42:55,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 10:42:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-30 10:42:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 10:42:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-09-30 10:42:55,787 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-09-30 10:42:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:55,787 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-09-30 10:42:55,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:42:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-09-30 10:42:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 10:42:55,788 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:55,788 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-30 10:42:55,788 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:55,788 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:55,789 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-09-30 10:42:55,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:55,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:55,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:55,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:55,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:56,090 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 10:42:56,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:56,091 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 10:42:56,099 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:42:56,143 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:42:56,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:56,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:42:57,488 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 10:42:57,508 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:42:57,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-30 10:42:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 10:42:57,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 10:42:57,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:57,510 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-09-30 10:42:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:58,778 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-09-30 10:42:58,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:42:58,778 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-09-30 10:42:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:58,779 INFO L225 Difference]: With dead ends: 85 [2018-09-30 10:42:58,779 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:42:58,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:42:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-30 10:42:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:42:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-09-30 10:42:58,785 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-09-30 10:42:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:58,785 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-09-30 10:42:58,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 10:42:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-09-30 10:42:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 10:42:58,786 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:58,786 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-30 10:42:58,787 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:58,787 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:58,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-09-30 10:42:58,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:58,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:58,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:58,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:42:58,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:59,491 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 10:42:59,491 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:42:59,491 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 10:42:59,499 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:42:59,530 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 10:42:59,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:42:59,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:00,202 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 10:43:00,222 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:00,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-30 10:43:00,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 10:43:00,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 10:43:00,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:00,223 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-09-30 10:43:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:01,299 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-30 10:43:01,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:43:01,299 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-09-30 10:43:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:01,300 INFO L225 Difference]: With dead ends: 90 [2018-09-30 10:43:01,300 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 10:43:01,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 10:43:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-30 10:43:01,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 10:43:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-09-30 10:43:01,304 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-09-30 10:43:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:01,305 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-09-30 10:43:01,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 10:43:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-09-30 10:43:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 10:43:01,306 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:01,306 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-30 10:43:01,306 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:01,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-09-30 10:43:01,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:01,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:01,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:01,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:01,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:02,380 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 10:43:02,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:02,380 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 10:43:02,395 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:02,415 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:02,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:02,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:03,461 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 10:43:03,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:03,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-30 10:43:03,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 10:43:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 10:43:03,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:03,482 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-09-30 10:43:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:04,882 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-09-30 10:43:04,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:43:04,882 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-09-30 10:43:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:04,883 INFO L225 Difference]: With dead ends: 95 [2018-09-30 10:43:04,883 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 10:43:04,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:04,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 10:43:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-30 10:43:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 10:43:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-09-30 10:43:04,888 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-09-30 10:43:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:04,889 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-09-30 10:43:04,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 10:43:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-09-30 10:43:04,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 10:43:04,890 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:04,890 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-30 10:43:04,890 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:04,890 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:04,890 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-09-30 10:43:04,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:04,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:04,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:04,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:04,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:05,549 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 10:43:05,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:05,550 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 10:43:05,558 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:05,590 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 10:43:05,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:05,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:06,740 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 10:43:06,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:06,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-30 10:43:06,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 10:43:06,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 10:43:06,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:06,763 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-09-30 10:43:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:08,272 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-09-30 10:43:08,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:43:08,273 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-09-30 10:43:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:08,273 INFO L225 Difference]: With dead ends: 100 [2018-09-30 10:43:08,273 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 10:43:08,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 10:43:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-30 10:43:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 10:43:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-09-30 10:43:08,278 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-09-30 10:43:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:08,278 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-09-30 10:43:08,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 10:43:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-09-30 10:43:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 10:43:08,280 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:08,280 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-30 10:43:08,280 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:08,280 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:08,280 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-09-30 10:43:08,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:08,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:08,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:08,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:08,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:08,632 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 10:43:08,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:08,633 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 10:43:08,640 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:08,675 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 10:43:08,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:08,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:10,027 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 10:43:10,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:10,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-30 10:43:10,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 10:43:10,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 10:43:10,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:10,048 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-09-30 10:43:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:11,639 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-09-30 10:43:11,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:43:11,639 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-09-30 10:43:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:11,640 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:43:11,640 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:43:11,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:11,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:43:11,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-30 10:43:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 10:43:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-09-30 10:43:11,644 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-09-30 10:43:11,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:11,644 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-09-30 10:43:11,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 10:43:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-09-30 10:43:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:43:11,645 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:11,645 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-30 10:43:11,645 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:11,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:11,646 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-09-30 10:43:11,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:11,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:11,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:11,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:11,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:12,049 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 10:43:12,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:12,049 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 10:43:12,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:12,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:13,594 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 10:43:13,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:13,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-30 10:43:13,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 10:43:13,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 10:43:13,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:13,616 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-09-30 10:43:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:15,459 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-09-30 10:43:15,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:43:15,460 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-09-30 10:43:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:15,460 INFO L225 Difference]: With dead ends: 110 [2018-09-30 10:43:15,460 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 10:43:15,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 10:43:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-30 10:43:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 10:43:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-09-30 10:43:15,465 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-09-30 10:43:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:15,465 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-09-30 10:43:15,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 10:43:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-09-30 10:43:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 10:43:15,466 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:15,467 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-30 10:43:15,467 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:15,467 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-09-30 10:43:15,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:15,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:15,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:15,874 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 10:43:15,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:15,875 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 10:43:15,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:15,906 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:15,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:15,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:18,515 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 10:43:18,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:18,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-30 10:43:18,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 10:43:18,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 10:43:18,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:18,536 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-09-30 10:43:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:20,481 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-30 10:43:20,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:43:20,483 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-09-30 10:43:20,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:20,484 INFO L225 Difference]: With dead ends: 115 [2018-09-30 10:43:20,484 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 10:43:20,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 10:43:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-30 10:43:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 10:43:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-09-30 10:43:20,490 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-09-30 10:43:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:20,490 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-09-30 10:43:20,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 10:43:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-09-30 10:43:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 10:43:20,491 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:20,491 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-30 10:43:20,491 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:20,491 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-09-30 10:43:20,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:20,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:20,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:20,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:20,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:20,881 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 10:43:20,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:20,882 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 10:43:20,889 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:20,925 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 10:43:20,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:20,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:22,456 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 10:43:22,477 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:22,477 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-30 10:43:22,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 10:43:22,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 10:43:22,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:22,479 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-09-30 10:43:24,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:24,696 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-09-30 10:43:24,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:43:24,696 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-09-30 10:43:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:24,697 INFO L225 Difference]: With dead ends: 120 [2018-09-30 10:43:24,697 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 10:43:24,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 10:43:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-30 10:43:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 10:43:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-09-30 10:43:24,702 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-09-30 10:43:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:24,703 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-09-30 10:43:24,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 10:43:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-09-30 10:43:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 10:43:24,704 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:24,704 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-30 10:43:24,704 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:24,704 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:24,704 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-09-30 10:43:24,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:24,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:24,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:24,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,091 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 10:43:25,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:25,091 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 10:43:25,099 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:25,122 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:25,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:25,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:26,362 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 10:43:26,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:26,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-30 10:43:26,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 10:43:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 10:43:26,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:26,385 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-09-30 10:43:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:28,844 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-09-30 10:43:28,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:43:28,844 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-09-30 10:43:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:28,845 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:43:28,845 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 10:43:28,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 10:43:28,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-30 10:43:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:43:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-09-30 10:43:28,851 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-09-30 10:43:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:28,851 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-09-30 10:43:28,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 10:43:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-09-30 10:43:28,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 10:43:28,852 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:28,852 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-30 10:43:28,853 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:28,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:28,853 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-09-30 10:43:28,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:28,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:28,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,854 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:28,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:29,253 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 10:43:29,253 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:29,253 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 10:43:29,261 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:43:29,297 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 10:43:29,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:29,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:30,692 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 10:43:30,712 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:30,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-30 10:43:30,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 10:43:30,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 10:43:30,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:30,713 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-09-30 10:43:33,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:33,197 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-09-30 10:43:33,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:43:33,197 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-09-30 10:43:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:33,198 INFO L225 Difference]: With dead ends: 130 [2018-09-30 10:43:33,198 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 10:43:33,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 10:43:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-30 10:43:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 10:43:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-09-30 10:43:33,201 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-09-30 10:43:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:33,202 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-09-30 10:43:33,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 10:43:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-09-30 10:43:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 10:43:33,202 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:33,203 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-30 10:43:33,203 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:33,203 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:33,203 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-09-30 10:43:33,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:33,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:33,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:33,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:33,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:33,794 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 10:43:33,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:33,794 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 10:43:33,802 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:43:33,841 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 10:43:33,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:33,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:35,269 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 10:43:35,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:35,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-30 10:43:35,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 10:43:35,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 10:43:35,293 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:35,293 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-09-30 10:43:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:37,890 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-09-30 10:43:37,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:43:37,891 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-09-30 10:43:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:37,892 INFO L225 Difference]: With dead ends: 135 [2018-09-30 10:43:37,892 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 10:43:37,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 10:43:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-30 10:43:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 10:43:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-09-30 10:43:37,897 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-09-30 10:43:37,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:37,898 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-09-30 10:43:37,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 10:43:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-09-30 10:43:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 10:43:37,899 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:37,899 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-30 10:43:37,899 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:37,899 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:37,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-09-30 10:43:37,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:37,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:37,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:37,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:37,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:38,563 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 10:43:38,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:38,564 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 10:43:38,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:38,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:40,179 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 10:43:40,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:40,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-30 10:43:40,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 10:43:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 10:43:40,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:40,201 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-09-30 10:43:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:43,469 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-09-30 10:43:43,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:43:43,469 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-09-30 10:43:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:43,470 INFO L225 Difference]: With dead ends: 140 [2018-09-30 10:43:43,470 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 10:43:43,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 10:43:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-30 10:43:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 10:43:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-09-30 10:43:43,475 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-09-30 10:43:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:43,476 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-09-30 10:43:43,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 10:43:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-09-30 10:43:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 10:43:43,476 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:43,476 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-30 10:43:43,477 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:43,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:43,477 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-09-30 10:43:43,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:43,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:43,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:43,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:43,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:44,242 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 10:43:44,242 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:44,242 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 10:43:44,249 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:44,278 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:44,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:44,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:46,613 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 10:43:46,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:46,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-30 10:43:46,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 10:43:46,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 10:43:46,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:46,637 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-09-30 10:43:50,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:50,266 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-09-30 10:43:50,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:43:50,266 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-09-30 10:43:50,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:50,267 INFO L225 Difference]: With dead ends: 145 [2018-09-30 10:43:50,267 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:43:50,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:43:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-30 10:43:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:43:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-09-30 10:43:50,272 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-09-30 10:43:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:50,272 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-09-30 10:43:50,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 10:43:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-09-30 10:43:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 10:43:50,272 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:50,273 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-30 10:43:50,273 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:50,273 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-09-30 10:43:50,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:50,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:50,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:50,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:50,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:50,831 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 10:43:50,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:50,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:43:50,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:43:50,885 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 10:43:50,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:50,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:52,796 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 10:43:52,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:52,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-30 10:43:52,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 10:43:52,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 10:43:52,818 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:52,818 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-09-30 10:43:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:56,319 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-09-30 10:43:56,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:43:56,320 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-09-30 10:43:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:56,320 INFO L225 Difference]: With dead ends: 150 [2018-09-30 10:43:56,321 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 10:43:56,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 10:43:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-30 10:43:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 10:43:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-09-30 10:43:56,326 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-09-30 10:43:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:56,326 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-09-30 10:43:56,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 10:43:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-09-30 10:43:56,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 10:43:56,327 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:56,327 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-30 10:43:56,328 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:56,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-09-30 10:43:56,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:56,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:56,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:56,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:43:56,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:57,097 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 10:43:57,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:57,098 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 10:43:57,106 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:43:57,139 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:43:57,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:57,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:59,454 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 10:43:59,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:59,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-30 10:43:59,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 10:43:59,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 10:43:59,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:59,477 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-09-30 10:44:03,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:03,170 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-09-30 10:44:03,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:44:03,171 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-09-30 10:44:03,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:03,171 INFO L225 Difference]: With dead ends: 155 [2018-09-30 10:44:03,171 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 10:44:03,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 10:44:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-30 10:44:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 10:44:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-09-30 10:44:03,178 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-09-30 10:44:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:03,178 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-09-30 10:44:03,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 10:44:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-09-30 10:44:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 10:44:03,179 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:03,179 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-30 10:44:03,179 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:03,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:03,180 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-09-30 10:44:03,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:03,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:03,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:03,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:03,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:04,512 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 10:44:04,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:04,512 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 10:44:04,519 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:44:04,563 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 10:44:04,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:04,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:06,645 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 10:44:06,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:06,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-30 10:44:06,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 10:44:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 10:44:06,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:06,667 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-09-30 10:44:10,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:10,905 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-09-30 10:44:10,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 10:44:10,906 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-09-30 10:44:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:10,907 INFO L225 Difference]: With dead ends: 160 [2018-09-30 10:44:10,907 INFO L226 Difference]: Without dead ends: 158 [2018-09-30 10:44:10,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-30 10:44:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-30 10:44:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-30 10:44:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-09-30 10:44:10,914 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-09-30 10:44:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:10,914 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-09-30 10:44:10,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 10:44:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-09-30 10:44:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-30 10:44:10,915 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:10,915 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-30 10:44:10,915 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:10,916 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:10,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-09-30 10:44:10,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:10,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:10,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:10,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:10,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:11,451 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 10:44:11,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:11,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:44:11,460 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:44:11,539 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 10:44:11,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:11,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:13,991 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 10:44:14,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:14,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-30 10:44:14,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 10:44:14,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 10:44:14,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:14,014 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-09-30 10:44:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:18,849 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-09-30 10:44:18,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 10:44:18,849 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-09-30 10:44:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:18,850 INFO L225 Difference]: With dead ends: 165 [2018-09-30 10:44:18,850 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 10:44:18,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 10:44:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-30 10:44:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 10:44:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-09-30 10:44:18,857 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-09-30 10:44:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:18,858 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-09-30 10:44:18,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 10:44:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-09-30 10:44:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 10:44:18,859 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:18,859 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-30 10:44:18,859 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:18,859 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-09-30 10:44:18,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:18,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:18,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:18,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:18,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:19,793 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 10:44:19,793 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:19,794 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 10:44:19,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:19,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:22,275 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 10:44:22,296 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:22,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-30 10:44:22,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 10:44:22,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 10:44:22,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:22,298 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-09-30 10:44:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:27,624 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-09-30 10:44:27,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:44:27,624 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-09-30 10:44:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:27,625 INFO L225 Difference]: With dead ends: 170 [2018-09-30 10:44:27,625 INFO L226 Difference]: Without dead ends: 168 [2018-09-30 10:44:27,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-30 10:44:27,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-30 10:44:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-30 10:44:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-09-30 10:44:27,632 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-09-30 10:44:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:27,632 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-09-30 10:44:27,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 10:44:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-09-30 10:44:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-30 10:44:27,633 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:27,633 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-30 10:44:27,633 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:27,634 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:27,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-09-30 10:44:27,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:27,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:27,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:27,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:27,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:29,260 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 10:44:29,261 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:29,261 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 10:44:29,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:44:29,317 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:44:29,317 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:29,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:32,119 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 10:44:32,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:32,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-30 10:44:32,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 10:44:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 10:44:32,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:32,142 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-09-30 10:44:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:37,644 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-09-30 10:44:37,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 10:44:37,644 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-09-30 10:44:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:37,645 INFO L225 Difference]: With dead ends: 175 [2018-09-30 10:44:37,645 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 10:44:37,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 10:44:37,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-30 10:44:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 10:44:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-09-30 10:44:37,651 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-09-30 10:44:37,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:37,652 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-09-30 10:44:37,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 10:44:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-09-30 10:44:37,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 10:44:37,653 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:37,653 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-30 10:44:37,655 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:37,655 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:37,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-09-30 10:44:37,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:37,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:37,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:37,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:37,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:38,342 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 10:44:38,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:38,342 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 10:44:38,351 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:44:38,407 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 10:44:38,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:38,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:41,346 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 10:44:41,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:41,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-30 10:44:41,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 10:44:41,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 10:44:41,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:41,370 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-09-30 10:44:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:46,914 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-09-30 10:44:46,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 10:44:46,914 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-09-30 10:44:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:46,915 INFO L225 Difference]: With dead ends: 180 [2018-09-30 10:44:46,915 INFO L226 Difference]: Without dead ends: 178 [2018-09-30 10:44:46,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-30 10:44:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-30 10:44:46,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-30 10:44:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-09-30 10:44:46,922 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-09-30 10:44:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:46,922 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-09-30 10:44:46,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 10:44:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-09-30 10:44:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 10:44:46,923 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:46,923 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-30 10:44:46,924 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:46,924 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:46,924 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-09-30 10:44:46,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:46,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:46,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:46,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:46,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:47,567 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 10:44:47,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:47,567 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 10:44:47,575 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:44:47,618 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:44:47,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:44:47,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:51,578 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 10:44:51,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:51,599 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-30 10:44:51,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 10:44:51,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 10:44:51,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:51,601 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-09-30 10:44:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:58,492 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-09-30 10:44:58,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:44:58,492 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-09-30 10:44:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:58,493 INFO L225 Difference]: With dead ends: 185 [2018-09-30 10:44:58,493 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 10:44:58,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 10:44:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-30 10:44:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 10:44:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-09-30 10:44:58,500 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-09-30 10:44:58,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:58,500 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-09-30 10:44:58,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 10:44:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-09-30 10:44:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 10:44:58,501 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:58,501 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-30 10:44:58,501 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:58,502 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-09-30 10:44:58,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:58,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:58,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:58,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:44:58,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:00,300 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 10:45:00,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:00,300 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 10:45:00,307 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:45:00,381 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 10:45:00,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:00,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:03,854 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 10:45:03,874 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:03,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-30 10:45:03,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 10:45:03,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 10:45:03,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:03,877 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-09-30 10:45:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:11,364 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-09-30 10:45:11,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 10:45:11,364 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-09-30 10:45:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:11,365 INFO L225 Difference]: With dead ends: 190 [2018-09-30 10:45:11,365 INFO L226 Difference]: Without dead ends: 188 [2018-09-30 10:45:11,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-30 10:45:11,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-30 10:45:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 10:45:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-09-30 10:45:11,371 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-09-30 10:45:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:11,371 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-09-30 10:45:11,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 10:45:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-09-30 10:45:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-30 10:45:11,372 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:11,372 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-30 10:45:11,372 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:11,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:11,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-09-30 10:45:11,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:11,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:11,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:11,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:11,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:12,143 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 10:45:12,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:12,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:45:12,151 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:45:12,218 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 10:45:12,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:12,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:16,411 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 10:45:16,433 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:16,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-30 10:45:16,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 10:45:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 10:45:16,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:16,435 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-09-30 10:45:24,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:24,573 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-09-30 10:45:24,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 10:45:24,574 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-09-30 10:45:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:24,575 INFO L225 Difference]: With dead ends: 195 [2018-09-30 10:45:24,575 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 10:45:24,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 10:45:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-30 10:45:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 10:45:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-09-30 10:45:24,581 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-09-30 10:45:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:24,582 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-09-30 10:45:24,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 10:45:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-09-30 10:45:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 10:45:24,583 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:24,583 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-30 10:45:24,583 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:24,583 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:24,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-09-30 10:45:24,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:24,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:24,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:24,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:24,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:26,403 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 10:45:26,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:26,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:45:26,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:26,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:30,390 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 10:45:30,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:30,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-09-30 10:45:30,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-09-30 10:45:30,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-09-30 10:45:30,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:30,413 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-09-30 10:45:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:38,401 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-09-30 10:45:38,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:45:38,402 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-09-30 10:45:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:38,402 INFO L225 Difference]: With dead ends: 200 [2018-09-30 10:45:38,403 INFO L226 Difference]: Without dead ends: 198 [2018-09-30 10:45:38,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-30 10:45:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-30 10:45:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-30 10:45:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-09-30 10:45:38,407 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-09-30 10:45:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:38,407 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-09-30 10:45:38,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-09-30 10:45:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-09-30 10:45:38,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-30 10:45:38,408 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:38,408 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-30 10:45:38,408 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:38,409 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:38,409 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-09-30 10:45:38,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:38,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:38,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:38,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:38,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:39,308 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 10:45:39,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:39,308 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 10:45:39,316 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:39,363 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:39,363 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:39,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:43,541 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 10:45:43,572 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:43,572 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-09-30 10:45:43,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-09-30 10:45:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-09-30 10:45:43,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:43,575 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-09-30 10:45:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:53,073 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-09-30 10:45:53,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 10:45:53,074 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-09-30 10:45:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:53,075 INFO L225 Difference]: With dead ends: 205 [2018-09-30 10:45:53,075 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 10:45:53,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 10:45:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-09-30 10:45:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 10:45:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-09-30 10:45:53,081 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-09-30 10:45:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:53,081 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-09-30 10:45:53,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-09-30 10:45:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-09-30 10:45:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 10:45:53,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:53,082 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-09-30 10:45:53,083 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:53,083 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-09-30 10:45:53,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:53,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:53,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:53,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:45:53,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:54,472 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 10:45:54,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:54,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:45:54,482 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:45:54,547 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 10:45:54,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:54,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:59,018 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 10:45:59,049 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:59,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-09-30 10:45:59,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-09-30 10:45:59,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-09-30 10:45:59,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:59,053 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-09-30 10:46:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:09,284 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-09-30 10:46:09,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 10:46:09,285 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-09-30 10:46:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:09,286 INFO L225 Difference]: With dead ends: 210 [2018-09-30 10:46:09,286 INFO L226 Difference]: Without dead ends: 208 [2018-09-30 10:46:09,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-30 10:46:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-09-30 10:46:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-30 10:46:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-09-30 10:46:09,291 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-09-30 10:46:09,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:09,291 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-09-30 10:46:09,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-09-30 10:46:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-09-30 10:46:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-30 10:46:09,292 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:09,293 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-09-30 10:46:09,293 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:09,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-09-30 10:46:09,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:09,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:09,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:10,961 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 10:46:10,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:10,961 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 10:46:10,968 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:46:11,017 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:46:11,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:11,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:15,842 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 10:46:15,863 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:15,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-09-30 10:46:15,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-09-30 10:46:15,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-09-30 10:46:15,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:15,866 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-09-30 10:46:26,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:26,984 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-09-30 10:46:26,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:46:26,985 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-09-30 10:46:26,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:26,986 INFO L225 Difference]: With dead ends: 215 [2018-09-30 10:46:26,986 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 10:46:26,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 10:46:26,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-09-30 10:46:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 10:46:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-09-30 10:46:26,991 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-09-30 10:46:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:26,992 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-09-30 10:46:26,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-09-30 10:46:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-09-30 10:46:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 10:46:26,993 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:26,993 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-09-30 10:46:26,993 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:26,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:26,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-09-30 10:46:26,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:26,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:26,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:26,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:26,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:27,996 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 10:46:27,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:27,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:46:28,004 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:46:28,074 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 10:46:28,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:28,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:34,943 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 10:46:34,964 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:34,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-09-30 10:46:34,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-09-30 10:46:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-09-30 10:46:34,967 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:34,967 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. Received shutdown request... [2018-09-30 10:46:45,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 10:46:45,048 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 10:46:45,053 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 10:46:45,053 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:46:45 BoogieIcfgContainer [2018-09-30 10:46:45,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:46:45,054 INFO L168 Benchmark]: Toolchain (without parser) took 251870.10 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -313.0 MB). Free memory was 1.5 GB in the beginning and 890.0 MB in the end (delta: 568.3 MB). Peak memory consumption was 255.3 MB. Max. memory is 7.1 GB. [2018-09-30 10:46:45,056 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:46:45,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:46:45,057 INFO L168 Benchmark]: Boogie Preprocessor took 30.55 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 10:46:45,058 INFO L168 Benchmark]: RCFGBuilder took 308.14 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 10:46:45,058 INFO L168 Benchmark]: TraceAbstraction took 251477.18 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -313.0 MB). Free memory was 1.4 GB in the beginning and 890.0 MB in the end (delta: 547.2 MB). Peak memory consumption was 234.2 MB. Max. memory is 7.1 GB. [2018-09-30 10:46:45,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.55 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 308.14 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 251477.18 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -313.0 MB). Free memory was 1.4 GB in the beginning and 890.0 MB in the end (delta: 547.2 MB). Peak memory consumption was 234.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 44). Cancelled while BasicCegarLoop was constructing difference of abstraction (209states) and FLOYD_HOARE automaton (currently 85 states, 168 states before enhancement), while ReachableStatesComputation was computing reachable states (214 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 251.4s OverallTime, 43 OverallIterations, 41 TraceHistogramMax, 140.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 434 SDtfs, 11844 SDslu, 10591 SDs, 0 SdLazy, 10758 SolverSat, 2152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6195 GetRequests, 2667 SyntacticMatches, 0 SemanticMatches, 3528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 42 MinimizatonAttempts, 165 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 106.0s InterpolantComputationTime, 8867 NumberOfCodeBlocks, 8867 NumberOfCodeBlocksAsserted, 532 NumberOfCheckSat, 8783 ConstructedInterpolants, 4346 QuantifiedInterpolants, 12054061 SizeOfPredicates, 984 NumberOfNonLiveVariables, 7544 ConjunctsInSsa, 1886 ConjunctsInUnsatCore, 84 InterpolantComputations, 2 PerfectInterpolantSequences, 1/116523 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-46-45-074.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-46-45-074.csv Completed graceful shutdown