java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 08:34:43,668 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 08:34:43,671 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 08:34:43,688 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 08:34:43,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 08:34:43,690 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 08:34:43,691 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 08:34:43,694 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 08:34:43,696 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 08:34:43,697 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 08:34:43,699 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-03 08:34:43,747 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-03 08:34:43,775 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 08:34:43,775 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 08:34:43,778 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 08:34:43,778 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 08:34:43,779 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 08:34:43,779 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 08:34:43,779 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 08:34:43,779 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 08:34:43,780 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 08:34:43,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 08:34:43,780 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 08:34:43,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 08:34:43,782 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 08:34:43,782 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 08:34:43,782 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 08:34:43,782 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 08:34:43,783 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 08:34:43,783 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 08:34:43,783 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 08:34:43,783 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 08:34:43,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 08:34:43,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 08:34:43,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 08:34:43,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 08:34:43,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 08:34:43,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 08:34:43,786 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 08:34:43,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 08:34:43,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 08:34:43,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 08:34:43,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 08:34:43,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 08:34:43,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 08:34:43,896 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 08:34:43,897 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 08:34:43,898 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-10-03 08:34:43,899 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-10-03 08:34:43,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 08:34:43,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 08:34:43,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 08:34:43,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 08:34:43,953 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 08:34:43,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:43,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:43,993 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-03 08:34:43,993 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-03 08:34:43,993 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-03 08:34:43,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 08:34:43,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 08:34:43,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 08:34:43,997 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 08:34:44,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... [2018-10-03 08:34:44,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 08:34:44,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 08:34:44,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 08:34:44,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 08:34:44,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 08:34:44,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-10-03 08:34:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-10-03 08:34:44,112 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-10-03 08:34:44,408 INFO L337 CfgBuilder]: Using library mode [2018-10-03 08:34:44,409 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 08:34:44 BoogieIcfgContainer [2018-10-03 08:34:44,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 08:34:44,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 08:34:44,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 08:34:44,415 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 08:34:44,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:34:43" (1/2) ... [2018-10-03 08:34:44,416 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 03.10 08:34:44, skipping insertion in model container [2018-10-03 08:34:44,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 08:34:44" (2/2) ... [2018-10-03 08:34:44,419 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-10-03 08:34:44,429 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 08:34:44,437 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 08:34:44,489 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 08:34:44,490 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 08:34:44,490 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 08:34:44,490 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 08:34:44,491 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 08:34:44,491 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 08:34:44,491 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 08:34:44,491 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 08:34:44,491 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 08:34:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-03 08:34:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-03 08:34:44,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:44,516 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-03 08:34:44,517 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:44,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:44,524 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-10-03 08:34:44,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:44,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:44,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:44,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:44,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:44,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 08:34:44,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 08:34:44,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 08:34:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 08:34:44,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-03 08:34:44,695 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-03 08:34:44,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:44,787 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-10-03 08:34:44,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 08:34:44,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-03 08:34:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:44,803 INFO L225 Difference]: With dead ends: 19 [2018-10-03 08:34:44,803 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 08:34:44,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-03 08:34:44,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 08:34:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-10-03 08:34:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 08:34:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-03 08:34:44,848 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-10-03 08:34:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:44,848 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-03 08:34:44,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 08:34:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-10-03 08:34:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 08:34:44,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:44,850 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 08:34:44,850 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:44,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:44,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-10-03 08:34:44,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:44,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:44,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:44,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:44,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:44,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:44,960 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:44,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:45,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:45,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:45,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-03 08:34:45,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 08:34:45,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 08:34:45,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-03 08:34:45,324 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-10-03 08:34:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:45,459 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-03 08:34:45,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 08:34:45,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-03 08:34:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:45,462 INFO L225 Difference]: With dead ends: 21 [2018-10-03 08:34:45,462 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 08:34:45,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-03 08:34:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 08:34:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-10-03 08:34:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 08:34:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-10-03 08:34:45,472 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-10-03 08:34:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:45,474 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-10-03 08:34:45,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 08:34:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-10-03 08:34:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 08:34:45,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:45,476 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-03 08:34:45,476 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:45,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-10-03 08:34:45,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:45,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:45,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:45,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:45,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:45,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 08:34:45,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 08:34:45,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 08:34:45,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 08:34:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-03 08:34:45,549 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-10-03 08:34:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:45,562 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-10-03 08:34:45,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 08:34:45,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-10-03 08:34:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:45,563 INFO L225 Difference]: With dead ends: 21 [2018-10-03 08:34:45,563 INFO L226 Difference]: Without dead ends: 14 [2018-10-03 08:34:45,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-03 08:34:45,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-03 08:34:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-03 08:34:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 08:34:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-10-03 08:34:45,568 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-10-03 08:34:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:45,569 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-03 08:34:45,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 08:34:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-10-03 08:34:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 08:34:45,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:45,570 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-10-03 08:34:45,570 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:45,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:45,571 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-10-03 08:34:45,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:45,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:45,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:45,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:45,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:45,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:45,867 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:45,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:34:45,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:34:45,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:45,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:46,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:46,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-03 08:34:46,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 08:34:46,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 08:34:46,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-03 08:34:46,153 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-10-03 08:34:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:46,346 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-10-03 08:34:46,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 08:34:46,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-10-03 08:34:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:46,347 INFO L225 Difference]: With dead ends: 25 [2018-10-03 08:34:46,347 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 08:34:46,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-03 08:34:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 08:34:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-10-03 08:34:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 08:34:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-10-03 08:34:46,355 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-10-03 08:34:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:46,355 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-10-03 08:34:46,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 08:34:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-10-03 08:34:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 08:34:46,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:46,357 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-10-03 08:34:46,357 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:46,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:46,357 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-10-03 08:34:46,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:46,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:46,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:46,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:46,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:46,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:46,502 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:46,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:34:46,546 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-03 08:34:46,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:46,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:47,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:47,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-03 08:34:47,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 08:34:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 08:34:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-03 08:34:47,121 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-10-03 08:34:47,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:47,252 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-10-03 08:34:47,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 08:34:47,254 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-10-03 08:34:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:47,255 INFO L225 Difference]: With dead ends: 30 [2018-10-03 08:34:47,255 INFO L226 Difference]: Without dead ends: 28 [2018-10-03 08:34:47,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-03 08:34:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-03 08:34:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-10-03 08:34:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-03 08:34:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-10-03 08:34:47,262 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-10-03 08:34:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:47,263 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-10-03 08:34:47,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 08:34:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-10-03 08:34:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 08:34:47,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:47,264 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-10-03 08:34:47,264 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:47,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-10-03 08:34:47,265 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:47,265 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:47,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:47,266 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:47,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:47,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:47,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:47,494 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:34:47,513 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:34:47,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:47,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:47,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:47,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-03 08:34:47,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 08:34:47,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 08:34:47,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-10-03 08:34:47,932 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-10-03 08:34:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:48,311 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-10-03 08:34:48,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 08:34:48,312 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-10-03 08:34:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:48,313 INFO L225 Difference]: With dead ends: 35 [2018-10-03 08:34:48,313 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 08:34:48,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-10-03 08:34:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 08:34:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-10-03 08:34:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 08:34:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-10-03 08:34:48,330 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-10-03 08:34:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:48,330 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-10-03 08:34:48,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 08:34:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-10-03 08:34:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 08:34:48,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:48,336 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-10-03 08:34:48,336 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:48,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:48,337 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-10-03 08:34:48,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:48,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:48,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:48,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:48,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:48,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:48,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:48,657 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:34:48,675 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-03 08:34:48,675 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:48,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:49,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:49,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-10-03 08:34:49,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 08:34:49,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 08:34:49,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-10-03 08:34:49,458 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-10-03 08:34:49,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:49,599 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-10-03 08:34:49,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 08:34:49,600 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-10-03 08:34:49,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:49,601 INFO L225 Difference]: With dead ends: 40 [2018-10-03 08:34:49,601 INFO L226 Difference]: Without dead ends: 38 [2018-10-03 08:34:49,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-10-03 08:34:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-03 08:34:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-10-03 08:34:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-03 08:34:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-10-03 08:34:49,607 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-10-03 08:34:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:49,608 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-10-03 08:34:49,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 08:34:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-10-03 08:34:49,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 08:34:49,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:49,609 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-10-03 08:34:49,609 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:49,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-10-03 08:34:49,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:49,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:49,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:49,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:49,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:49,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:49,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:49,817 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:34:49,833 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 08:34:49,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:49,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:50,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:50,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-10-03 08:34:50,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 08:34:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 08:34:50,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-10-03 08:34:50,453 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-10-03 08:34:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:50,629 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-10-03 08:34:50,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 08:34:50,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-10-03 08:34:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:50,632 INFO L225 Difference]: With dead ends: 45 [2018-10-03 08:34:50,632 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 08:34:50,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-10-03 08:34:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 08:34:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-10-03 08:34:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 08:34:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-10-03 08:34:50,640 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-10-03 08:34:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:50,641 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-10-03 08:34:50,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 08:34:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-10-03 08:34:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 08:34:50,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:50,642 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-10-03 08:34:50,643 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:50,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-10-03 08:34:50,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:50,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:50,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:50,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:50,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:50,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:50,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:50,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:50,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:51,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:51,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-10-03 08:34:51,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 08:34:51,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 08:34:51,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2018-10-03 08:34:51,463 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-10-03 08:34:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:51,621 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-10-03 08:34:51,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 08:34:51,622 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-10-03 08:34:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:51,623 INFO L225 Difference]: With dead ends: 50 [2018-10-03 08:34:51,623 INFO L226 Difference]: Without dead ends: 48 [2018-10-03 08:34:51,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2018-10-03 08:34:51,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-03 08:34:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-10-03 08:34:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-03 08:34:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-10-03 08:34:51,630 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-10-03 08:34:51,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:51,630 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-10-03 08:34:51,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 08:34:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-10-03 08:34:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 08:34:51,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:51,632 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-10-03 08:34:51,632 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:51,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-10-03 08:34:51,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:51,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:51,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:51,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:34:51,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:52,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:52,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:52,173 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:34:52,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:34:52,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:52,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:52,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:52,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-10-03 08:34:52,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 08:34:52,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 08:34:52,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2018-10-03 08:34:52,773 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-10-03 08:34:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:53,063 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-10-03 08:34:53,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 08:34:53,064 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-10-03 08:34:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:53,065 INFO L225 Difference]: With dead ends: 55 [2018-10-03 08:34:53,065 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 08:34:53,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2018-10-03 08:34:53,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 08:34:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-10-03 08:34:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 08:34:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-10-03 08:34:53,072 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-10-03 08:34:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:53,072 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-10-03 08:34:53,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 08:34:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-10-03 08:34:53,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 08:34:53,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:53,074 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-10-03 08:34:53,074 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:53,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:53,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-10-03 08:34:53,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:53,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:53,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:53,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:53,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:53,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:53,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:53,359 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:34:53,381 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-03 08:34:53,381 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:53,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:53,944 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-03 08:34:54,453 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:54,479 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:54,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-10-03 08:34:54,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 08:34:54,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 08:34:54,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2018-10-03 08:34:54,481 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-10-03 08:34:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:54,730 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-10-03 08:34:54,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 08:34:54,730 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-10-03 08:34:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:54,731 INFO L225 Difference]: With dead ends: 60 [2018-10-03 08:34:54,732 INFO L226 Difference]: Without dead ends: 58 [2018-10-03 08:34:54,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2018-10-03 08:34:54,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-03 08:34:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-10-03 08:34:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-03 08:34:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-10-03 08:34:54,739 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-10-03 08:34:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:54,739 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-10-03 08:34:54,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 08:34:54,739 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-10-03 08:34:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 08:34:54,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:54,740 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-10-03 08:34:54,740 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:54,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-10-03 08:34:54,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:54,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:54,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:54,742 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:54,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:55,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:55,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:55,078 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:34:55,124 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:34:55,125 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:55,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:55,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:55,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-10-03 08:34:55,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 08:34:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 08:34:55,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2018-10-03 08:34:55,851 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-10-03 08:34:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:56,163 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-10-03 08:34:56,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 08:34:56,163 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-10-03 08:34:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:56,165 INFO L225 Difference]: With dead ends: 65 [2018-10-03 08:34:56,165 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 08:34:56,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2018-10-03 08:34:56,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 08:34:56,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-10-03 08:34:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 08:34:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-10-03 08:34:56,172 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-10-03 08:34:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:56,172 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-10-03 08:34:56,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 08:34:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-10-03 08:34:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 08:34:56,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:56,173 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-10-03 08:34:56,174 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:56,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:56,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-10-03 08:34:56,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:56,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:56,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:56,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:56,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:56,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:56,542 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:56,550 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:34:56,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-03 08:34:56,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:56,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:57,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:57,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-10-03 08:34:57,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 08:34:57,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 08:34:57,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2018-10-03 08:34:57,458 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-10-03 08:34:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:57,669 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-10-03 08:34:57,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 08:34:57,670 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-10-03 08:34:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:57,671 INFO L225 Difference]: With dead ends: 70 [2018-10-03 08:34:57,671 INFO L226 Difference]: Without dead ends: 68 [2018-10-03 08:34:57,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2018-10-03 08:34:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-03 08:34:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-10-03 08:34:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-03 08:34:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-10-03 08:34:57,678 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-10-03 08:34:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:57,678 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-10-03 08:34:57,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 08:34:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-10-03 08:34:57,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 08:34:57,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:57,680 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-10-03 08:34:57,680 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:57,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:57,680 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-10-03 08:34:57,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:57,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:57,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:57,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:57,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:34:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:58,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:34:58,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:34:58,464 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:34:58,514 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 08:34:58,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:34:58,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:34:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:34:59,710 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:34:59,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-10-03 08:34:59,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 08:34:59,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 08:34:59,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2018-10-03 08:34:59,712 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-10-03 08:34:59,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:34:59,928 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-10-03 08:34:59,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 08:34:59,929 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-10-03 08:34:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:34:59,930 INFO L225 Difference]: With dead ends: 75 [2018-10-03 08:34:59,931 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 08:34:59,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2018-10-03 08:34:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 08:34:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-10-03 08:34:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 08:34:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-10-03 08:34:59,939 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-10-03 08:34:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:34:59,940 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-10-03 08:34:59,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 08:34:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-10-03 08:34:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 08:34:59,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:34:59,941 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-10-03 08:34:59,942 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:34:59,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:34:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-10-03 08:34:59,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:34:59,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:34:59,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:59,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:34:59,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:34:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:00,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:00,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:00,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:35:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:00,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:01,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:01,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-10-03 08:35:01,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 08:35:01,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 08:35:01,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=2229, Unknown=0, NotChecked=0, Total=3080 [2018-10-03 08:35:01,583 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-10-03 08:35:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:01,792 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-10-03 08:35:01,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 08:35:01,793 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-10-03 08:35:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:01,794 INFO L225 Difference]: With dead ends: 80 [2018-10-03 08:35:01,794 INFO L226 Difference]: Without dead ends: 78 [2018-10-03 08:35:01,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=851, Invalid=2229, Unknown=0, NotChecked=0, Total=3080 [2018-10-03 08:35:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-03 08:35:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-10-03 08:35:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-03 08:35:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-10-03 08:35:01,802 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-10-03 08:35:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:01,802 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-10-03 08:35:01,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 08:35:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-10-03 08:35:01,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 08:35:01,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:01,803 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-10-03 08:35:01,804 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:01,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:01,804 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-10-03 08:35:01,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:01,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:01,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:01,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:35:01,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:02,258 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:02,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:02,275 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:35:02,308 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:35:02,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:02,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:03,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:03,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-10-03 08:35:03,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 08:35:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 08:35:03,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=972, Invalid=2568, Unknown=0, NotChecked=0, Total=3540 [2018-10-03 08:35:03,561 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-10-03 08:35:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:03,841 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-10-03 08:35:03,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 08:35:03,841 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-10-03 08:35:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:03,842 INFO L225 Difference]: With dead ends: 85 [2018-10-03 08:35:03,842 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 08:35:03,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=972, Invalid=2568, Unknown=0, NotChecked=0, Total=3540 [2018-10-03 08:35:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 08:35:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-10-03 08:35:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 08:35:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-10-03 08:35:03,849 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-10-03 08:35:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:03,850 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-10-03 08:35:03,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 08:35:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-10-03 08:35:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 08:35:03,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:03,851 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-10-03 08:35:03,852 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:03,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-10-03 08:35:03,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:03,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:03,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:03,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:03,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:04,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:04,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:04,325 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:35:04,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-03 08:35:04,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:04,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:05,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:05,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-10-03 08:35:05,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 08:35:05,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 08:35:05,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2018-10-03 08:35:05,240 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-10-03 08:35:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:05,668 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-10-03 08:35:05,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 08:35:05,676 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-10-03 08:35:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:05,677 INFO L225 Difference]: With dead ends: 90 [2018-10-03 08:35:05,677 INFO L226 Difference]: Without dead ends: 88 [2018-10-03 08:35:05,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2129 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2018-10-03 08:35:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-03 08:35:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-10-03 08:35:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-03 08:35:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-10-03 08:35:05,685 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-10-03 08:35:05,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:05,685 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-10-03 08:35:05,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 08:35:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-10-03 08:35:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 08:35:05,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:05,692 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-10-03 08:35:05,693 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:05,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:05,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-10-03 08:35:05,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:05,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:05,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:05,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:05,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:06,208 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:06,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:06,216 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:35:06,238 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:35:06,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:06,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:07,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:07,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-10-03 08:35:07,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 08:35:07,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 08:35:07,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=3318, Unknown=0, NotChecked=0, Total=4556 [2018-10-03 08:35:07,505 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-10-03 08:35:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:07,928 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-10-03 08:35:07,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 08:35:07,929 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-10-03 08:35:07,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:07,930 INFO L225 Difference]: With dead ends: 95 [2018-10-03 08:35:07,930 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 08:35:07,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2423 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1238, Invalid=3318, Unknown=0, NotChecked=0, Total=4556 [2018-10-03 08:35:07,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 08:35:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-10-03 08:35:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 08:35:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-10-03 08:35:07,940 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-10-03 08:35:07,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:07,940 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-10-03 08:35:07,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 08:35:07,940 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-10-03 08:35:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 08:35:07,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:07,942 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-10-03 08:35:07,942 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:07,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:07,942 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-10-03 08:35:07,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:07,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:07,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:07,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:07,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:09,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:09,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:09,495 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:35:09,527 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-03 08:35:09,527 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:09,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:10,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:10,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-10-03 08:35:10,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 08:35:10,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 08:35:10,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=3729, Unknown=0, NotChecked=0, Total=5112 [2018-10-03 08:35:10,589 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-10-03 08:35:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:10,844 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-10-03 08:35:10,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 08:35:10,844 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-10-03 08:35:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:10,845 INFO L225 Difference]: With dead ends: 100 [2018-10-03 08:35:10,846 INFO L226 Difference]: Without dead ends: 98 [2018-10-03 08:35:10,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1383, Invalid=3729, Unknown=0, NotChecked=0, Total=5112 [2018-10-03 08:35:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-03 08:35:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-10-03 08:35:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-03 08:35:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-10-03 08:35:10,852 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-10-03 08:35:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:10,852 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-10-03 08:35:10,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 08:35:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-10-03 08:35:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 08:35:10,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:10,854 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-10-03 08:35:10,854 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:10,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:10,854 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-10-03 08:35:10,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:10,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:10,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:10,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:10,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:11,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:11,469 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:11,476 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:35:11,529 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 08:35:11,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:11,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:12,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:12,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-10-03 08:35:12,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 08:35:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 08:35:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1536, Invalid=4164, Unknown=0, NotChecked=0, Total=5700 [2018-10-03 08:35:12,861 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-10-03 08:35:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:13,099 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-10-03 08:35:13,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 08:35:13,100 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-10-03 08:35:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:13,101 INFO L225 Difference]: With dead ends: 105 [2018-10-03 08:35:13,101 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 08:35:13,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1536, Invalid=4164, Unknown=0, NotChecked=0, Total=5700 [2018-10-03 08:35:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 08:35:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-10-03 08:35:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 08:35:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-10-03 08:35:13,105 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-10-03 08:35:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:13,106 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-10-03 08:35:13,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 08:35:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-10-03 08:35:13,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 08:35:13,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:13,107 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-10-03 08:35:13,107 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:13,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:13,107 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-10-03 08:35:13,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:13,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:13,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:13,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:13,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:14,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:14,153 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:14,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:35:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:14,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:16,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:16,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-10-03 08:35:16,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 08:35:16,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 08:35:16,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1697, Invalid=4623, Unknown=0, NotChecked=0, Total=6320 [2018-10-03 08:35:16,508 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-10-03 08:35:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:16,804 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-10-03 08:35:16,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 08:35:16,805 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-10-03 08:35:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:16,806 INFO L225 Difference]: With dead ends: 110 [2018-10-03 08:35:16,806 INFO L226 Difference]: Without dead ends: 108 [2018-10-03 08:35:16,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3419 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1697, Invalid=4623, Unknown=0, NotChecked=0, Total=6320 [2018-10-03 08:35:16,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-03 08:35:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-10-03 08:35:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-03 08:35:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-10-03 08:35:16,810 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-10-03 08:35:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:16,811 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-10-03 08:35:16,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 08:35:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-10-03 08:35:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 08:35:16,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:16,812 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-10-03 08:35:16,812 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:16,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-10-03 08:35:16,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:16,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:16,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:16,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:35:16,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:17,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:17,775 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:17,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:35:17,812 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:35:17,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:17,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:19,608 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-03 08:35:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:21,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:21,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-10-03 08:35:21,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 08:35:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 08:35:21,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1866, Invalid=5106, Unknown=0, NotChecked=0, Total=6972 [2018-10-03 08:35:21,217 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-10-03 08:35:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:21,513 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-10-03 08:35:21,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 08:35:21,515 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-10-03 08:35:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:21,516 INFO L225 Difference]: With dead ends: 115 [2018-10-03 08:35:21,516 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 08:35:21,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1866, Invalid=5106, Unknown=0, NotChecked=0, Total=6972 [2018-10-03 08:35:21,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 08:35:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-10-03 08:35:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 08:35:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-10-03 08:35:21,523 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-10-03 08:35:21,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:21,523 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-10-03 08:35:21,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 08:35:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-10-03 08:35:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 08:35:21,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:21,524 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-10-03 08:35:21,524 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:21,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-10-03 08:35:21,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:21,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:21,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:21,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:21,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:22,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:22,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:22,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:35:22,501 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-03 08:35:22,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:22,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:24,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:24,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-10-03 08:35:24,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 08:35:24,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 08:35:24,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2043, Invalid=5613, Unknown=0, NotChecked=0, Total=7656 [2018-10-03 08:35:24,219 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-10-03 08:35:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:24,603 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-10-03 08:35:24,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 08:35:24,604 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-10-03 08:35:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:24,605 INFO L225 Difference]: With dead ends: 120 [2018-10-03 08:35:24,605 INFO L226 Difference]: Without dead ends: 118 [2018-10-03 08:35:24,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4178 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2043, Invalid=5613, Unknown=0, NotChecked=0, Total=7656 [2018-10-03 08:35:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-03 08:35:24,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-10-03 08:35:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-03 08:35:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-10-03 08:35:24,611 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-10-03 08:35:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:24,611 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-10-03 08:35:24,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 08:35:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-10-03 08:35:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-03 08:35:24,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:24,612 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-10-03 08:35:24,612 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:24,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-10-03 08:35:24,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:24,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:24,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:24,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:24,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:25,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:25,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:25,915 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:35:25,939 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:35:25,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:25,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:27,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:27,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-10-03 08:35:27,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 08:35:27,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 08:35:27,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2228, Invalid=6144, Unknown=0, NotChecked=0, Total=8372 [2018-10-03 08:35:27,413 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-10-03 08:35:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:27,750 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-10-03 08:35:27,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 08:35:27,750 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-10-03 08:35:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:27,752 INFO L225 Difference]: With dead ends: 125 [2018-10-03 08:35:27,752 INFO L226 Difference]: Without dead ends: 123 [2018-10-03 08:35:27,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4586 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2228, Invalid=6144, Unknown=0, NotChecked=0, Total=8372 [2018-10-03 08:35:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-03 08:35:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-10-03 08:35:27,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 08:35:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-10-03 08:35:27,759 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-10-03 08:35:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:27,760 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-10-03 08:35:27,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 08:35:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-10-03 08:35:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 08:35:27,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:27,761 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-10-03 08:35:27,761 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:27,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:27,761 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-10-03 08:35:27,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:27,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:27,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:27,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:27,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:29,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:29,048 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:29,055 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:35:29,090 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-03 08:35:29,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:29,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:30,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:30,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-10-03 08:35:30,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 08:35:30,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 08:35:30,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2018-10-03 08:35:30,832 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-10-03 08:35:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:31,211 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-10-03 08:35:31,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 08:35:31,211 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-10-03 08:35:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:31,212 INFO L225 Difference]: With dead ends: 130 [2018-10-03 08:35:31,212 INFO L226 Difference]: Without dead ends: 128 [2018-10-03 08:35:31,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5013 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2018-10-03 08:35:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-10-03 08:35:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-10-03 08:35:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-10-03 08:35:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-10-03 08:35:31,216 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-10-03 08:35:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:31,217 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-10-03 08:35:31,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 08:35:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-10-03 08:35:31,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-03 08:35:31,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:31,218 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-10-03 08:35:31,218 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:31,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-10-03 08:35:31,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:31,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:31,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:31,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:31,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:32,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:32,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:32,211 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:35:32,248 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 08:35:32,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:32,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:34,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:34,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-10-03 08:35:34,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 08:35:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 08:35:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2622, Invalid=7278, Unknown=0, NotChecked=0, Total=9900 [2018-10-03 08:35:34,312 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-10-03 08:35:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:34,833 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-10-03 08:35:34,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 08:35:34,834 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-10-03 08:35:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:34,835 INFO L225 Difference]: With dead ends: 135 [2018-10-03 08:35:34,835 INFO L226 Difference]: Without dead ends: 133 [2018-10-03 08:35:34,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2622, Invalid=7278, Unknown=0, NotChecked=0, Total=9900 [2018-10-03 08:35:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-03 08:35:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-10-03 08:35:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-03 08:35:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-10-03 08:35:34,841 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-10-03 08:35:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:34,841 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-10-03 08:35:34,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 08:35:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-10-03 08:35:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 08:35:34,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:34,842 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-10-03 08:35:34,842 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:34,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-10-03 08:35:34,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:34,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:34,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:34,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:34,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:35,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:35,895 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:35,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:35:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:35,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:37,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:37,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-10-03 08:35:37,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 08:35:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 08:35:37,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2831, Invalid=7881, Unknown=0, NotChecked=0, Total=10712 [2018-10-03 08:35:37,702 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-10-03 08:35:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:38,137 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-10-03 08:35:38,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 08:35:38,137 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-10-03 08:35:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:38,138 INFO L225 Difference]: With dead ends: 140 [2018-10-03 08:35:38,139 INFO L226 Difference]: Without dead ends: 138 [2018-10-03 08:35:38,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5924 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2831, Invalid=7881, Unknown=0, NotChecked=0, Total=10712 [2018-10-03 08:35:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-10-03 08:35:38,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-10-03 08:35:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-10-03 08:35:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-10-03 08:35:38,146 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-10-03 08:35:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:38,146 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-10-03 08:35:38,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 08:35:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-10-03 08:35:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-03 08:35:38,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:38,147 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-10-03 08:35:38,147 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:38,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-10-03 08:35:38,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:38,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:38,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:38,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:35:38,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:39,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:39,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:39,809 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:35:39,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:35:39,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:39,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:41,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:41,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-10-03 08:35:41,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 08:35:41,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 08:35:41,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3048, Invalid=8508, Unknown=0, NotChecked=0, Total=11556 [2018-10-03 08:35:41,835 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-10-03 08:35:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:42,619 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-10-03 08:35:42,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 08:35:42,619 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-10-03 08:35:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:42,620 INFO L225 Difference]: With dead ends: 145 [2018-10-03 08:35:42,620 INFO L226 Difference]: Without dead ends: 143 [2018-10-03 08:35:42,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6408 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3048, Invalid=8508, Unknown=0, NotChecked=0, Total=11556 [2018-10-03 08:35:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-03 08:35:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-10-03 08:35:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-03 08:35:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-10-03 08:35:42,626 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-10-03 08:35:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:42,626 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-10-03 08:35:42,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 08:35:42,627 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-10-03 08:35:42,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 08:35:42,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:42,627 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-10-03 08:35:42,627 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:42,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:42,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-10-03 08:35:42,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:42,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:42,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:42,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:42,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:43,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:43,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:43,847 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:35:43,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-03 08:35:43,892 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:43,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:46,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:46,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-10-03 08:35:46,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 08:35:46,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 08:35:46,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3273, Invalid=9159, Unknown=0, NotChecked=0, Total=12432 [2018-10-03 08:35:46,557 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-10-03 08:35:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:47,015 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-10-03 08:35:47,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 08:35:47,016 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-10-03 08:35:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:47,018 INFO L225 Difference]: With dead ends: 150 [2018-10-03 08:35:47,018 INFO L226 Difference]: Without dead ends: 148 [2018-10-03 08:35:47,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6911 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3273, Invalid=9159, Unknown=0, NotChecked=0, Total=12432 [2018-10-03 08:35:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-03 08:35:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-10-03 08:35:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-03 08:35:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-10-03 08:35:47,024 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-10-03 08:35:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:47,024 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-10-03 08:35:47,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 08:35:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-10-03 08:35:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-03 08:35:47,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:47,026 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-10-03 08:35:47,026 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:47,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:47,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-10-03 08:35:47,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:47,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:47,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:47,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:47,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:48,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:48,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:48,462 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:35:48,498 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:35:48,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:48,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:51,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:51,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-10-03 08:35:51,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 08:35:51,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 08:35:51,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3506, Invalid=9834, Unknown=0, NotChecked=0, Total=13340 [2018-10-03 08:35:51,276 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-10-03 08:35:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:51,907 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-10-03 08:35:51,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 08:35:51,907 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-10-03 08:35:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:51,909 INFO L225 Difference]: With dead ends: 155 [2018-10-03 08:35:51,909 INFO L226 Difference]: Without dead ends: 153 [2018-10-03 08:35:51,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7433 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3506, Invalid=9834, Unknown=0, NotChecked=0, Total=13340 [2018-10-03 08:35:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-03 08:35:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-10-03 08:35:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-03 08:35:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-10-03 08:35:51,916 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-10-03 08:35:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:51,916 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-10-03 08:35:51,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-03 08:35:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-10-03 08:35:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 08:35:51,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:51,918 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-10-03 08:35:51,918 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:51,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:51,918 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-10-03 08:35:51,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:51,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:51,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:51,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:51,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:53,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:53,396 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:53,403 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:35:53,450 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-03 08:35:53,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:53,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:35:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:56,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:35:56,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-10-03 08:35:56,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-03 08:35:56,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-03 08:35:56,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3747, Invalid=10533, Unknown=0, NotChecked=0, Total=14280 [2018-10-03 08:35:56,045 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-10-03 08:35:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:35:56,595 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-10-03 08:35:56,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 08:35:56,595 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-10-03 08:35:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:35:56,596 INFO L225 Difference]: With dead ends: 160 [2018-10-03 08:35:56,597 INFO L226 Difference]: Without dead ends: 158 [2018-10-03 08:35:56,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7974 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3747, Invalid=10533, Unknown=0, NotChecked=0, Total=14280 [2018-10-03 08:35:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-03 08:35:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-10-03 08:35:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-03 08:35:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-10-03 08:35:56,604 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-10-03 08:35:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:35:56,604 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-10-03 08:35:56,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-03 08:35:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-10-03 08:35:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-03 08:35:56,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:35:56,606 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-10-03 08:35:56,606 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:35:56,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:35:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-10-03 08:35:56,606 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:35:56,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:35:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:56,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:35:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:35:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:35:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:35:58,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:35:58,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:35:58,130 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:35:58,179 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 08:35:58,179 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:35:58,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:00,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:00,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-10-03 08:36:00,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-03 08:36:00,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-03 08:36:00,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3996, Invalid=11256, Unknown=0, NotChecked=0, Total=15252 [2018-10-03 08:36:00,942 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-10-03 08:36:01,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:01,494 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-10-03 08:36:01,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 08:36:01,494 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-10-03 08:36:01,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:01,496 INFO L225 Difference]: With dead ends: 165 [2018-10-03 08:36:01,496 INFO L226 Difference]: Without dead ends: 163 [2018-10-03 08:36:01,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8534 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3996, Invalid=11256, Unknown=0, NotChecked=0, Total=15252 [2018-10-03 08:36:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-03 08:36:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-10-03 08:36:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-03 08:36:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-10-03 08:36:01,503 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-10-03 08:36:01,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:01,504 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-10-03 08:36:01,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-03 08:36:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-10-03 08:36:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 08:36:01,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:01,505 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-10-03 08:36:01,505 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:01,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:01,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-10-03 08:36:01,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:01,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:01,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:01,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:01,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:02,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:02,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:02,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:36:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:03,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:05,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:05,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:05,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-10-03 08:36:05,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-03 08:36:05,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-03 08:36:05,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4253, Invalid=12003, Unknown=0, NotChecked=0, Total=16256 [2018-10-03 08:36:05,982 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-10-03 08:36:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:07,107 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-10-03 08:36:07,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 08:36:07,108 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-10-03 08:36:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:07,109 INFO L225 Difference]: With dead ends: 170 [2018-10-03 08:36:07,110 INFO L226 Difference]: Without dead ends: 168 [2018-10-03 08:36:07,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9113 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4253, Invalid=12003, Unknown=0, NotChecked=0, Total=16256 [2018-10-03 08:36:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-10-03 08:36:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-10-03 08:36:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-10-03 08:36:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-10-03 08:36:07,117 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-10-03 08:36:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:07,117 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-10-03 08:36:07,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-03 08:36:07,117 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-10-03 08:36:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-03 08:36:07,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:07,118 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-10-03 08:36:07,118 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:07,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-10-03 08:36:07,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:07,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:07,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:07,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:36:07,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:10,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:10,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:10,326 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:36:10,371 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:36:10,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:36:10,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:13,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:13,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-10-03 08:36:13,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-03 08:36:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-03 08:36:13,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4518, Invalid=12774, Unknown=0, NotChecked=0, Total=17292 [2018-10-03 08:36:13,173 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-10-03 08:36:13,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:13,717 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-10-03 08:36:13,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 08:36:13,718 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-10-03 08:36:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:13,719 INFO L225 Difference]: With dead ends: 175 [2018-10-03 08:36:13,719 INFO L226 Difference]: Without dead ends: 173 [2018-10-03 08:36:13,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9711 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4518, Invalid=12774, Unknown=0, NotChecked=0, Total=17292 [2018-10-03 08:36:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-03 08:36:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-10-03 08:36:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-03 08:36:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-10-03 08:36:13,726 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-10-03 08:36:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:13,727 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-10-03 08:36:13,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-03 08:36:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-10-03 08:36:13,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-03 08:36:13,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:13,728 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-10-03 08:36:13,728 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:13,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-10-03 08:36:13,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:13,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:13,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:13,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:13,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:16,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:16,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:16,070 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:36:16,126 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-03 08:36:16,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:36:16,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:19,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:19,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-10-03 08:36:19,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-03 08:36:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-03 08:36:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4791, Invalid=13569, Unknown=0, NotChecked=0, Total=18360 [2018-10-03 08:36:19,125 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-10-03 08:36:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:19,700 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-10-03 08:36:19,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 08:36:19,701 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-10-03 08:36:19,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:19,702 INFO L225 Difference]: With dead ends: 180 [2018-10-03 08:36:19,702 INFO L226 Difference]: Without dead ends: 178 [2018-10-03 08:36:19,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10328 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4791, Invalid=13569, Unknown=0, NotChecked=0, Total=18360 [2018-10-03 08:36:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-03 08:36:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-10-03 08:36:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-10-03 08:36:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-10-03 08:36:19,709 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-10-03 08:36:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:19,710 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-10-03 08:36:19,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-03 08:36:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-10-03 08:36:19,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-03 08:36:19,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:19,711 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-10-03 08:36:19,711 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:19,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:19,712 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-10-03 08:36:19,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:19,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:19,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:19,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:19,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:21,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:21,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:21,711 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:36:21,754 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:36:21,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:36:21,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:26,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:26,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-10-03 08:36:26,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-03 08:36:26,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-03 08:36:26,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5072, Invalid=14388, Unknown=0, NotChecked=0, Total=19460 [2018-10-03 08:36:26,182 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-10-03 08:36:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:26,797 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-10-03 08:36:26,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 08:36:26,798 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-10-03 08:36:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:26,799 INFO L225 Difference]: With dead ends: 185 [2018-10-03 08:36:26,799 INFO L226 Difference]: Without dead ends: 183 [2018-10-03 08:36:26,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10964 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5072, Invalid=14388, Unknown=0, NotChecked=0, Total=19460 [2018-10-03 08:36:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-03 08:36:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-10-03 08:36:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-03 08:36:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-10-03 08:36:26,805 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-10-03 08:36:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:26,805 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-10-03 08:36:26,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-03 08:36:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-10-03 08:36:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 08:36:26,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:26,806 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-10-03 08:36:26,806 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:26,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:26,807 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-10-03 08:36:26,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:26,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:26,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:26,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:26,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:29,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:29,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:29,011 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:36:29,079 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-03 08:36:29,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:36:29,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:32,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:32,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-10-03 08:36:32,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-03 08:36:32,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-03 08:36:32,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5361, Invalid=15231, Unknown=0, NotChecked=0, Total=20592 [2018-10-03 08:36:32,683 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-10-03 08:36:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:33,327 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-10-03 08:36:33,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 08:36:33,327 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-10-03 08:36:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:33,328 INFO L225 Difference]: With dead ends: 190 [2018-10-03 08:36:33,329 INFO L226 Difference]: Without dead ends: 188 [2018-10-03 08:36:33,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11619 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5361, Invalid=15231, Unknown=0, NotChecked=0, Total=20592 [2018-10-03 08:36:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-10-03 08:36:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-10-03 08:36:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-03 08:36:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-10-03 08:36:33,335 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-10-03 08:36:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:33,336 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-10-03 08:36:33,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-03 08:36:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-10-03 08:36:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-03 08:36:33,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:33,337 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-10-03 08:36:33,337 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:33,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:33,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-10-03 08:36:33,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:33,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:33,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:33,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:33,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:37,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:37,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:37,043 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:36:37,101 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 08:36:37,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:36:37,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:41,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:41,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-10-03 08:36:41,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-03 08:36:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-03 08:36:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5658, Invalid=16098, Unknown=0, NotChecked=0, Total=21756 [2018-10-03 08:36:41,286 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-10-03 08:36:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:41,911 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-10-03 08:36:41,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 08:36:41,912 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-10-03 08:36:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:41,913 INFO L225 Difference]: With dead ends: 195 [2018-10-03 08:36:41,913 INFO L226 Difference]: Without dead ends: 193 [2018-10-03 08:36:41,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12293 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=5658, Invalid=16098, Unknown=0, NotChecked=0, Total=21756 [2018-10-03 08:36:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-03 08:36:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-10-03 08:36:41,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-03 08:36:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-10-03 08:36:41,921 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-10-03 08:36:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:41,921 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-10-03 08:36:41,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-03 08:36:41,921 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-10-03 08:36:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-03 08:36:41,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:41,923 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-10-03 08:36:41,923 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:41,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:41,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-10-03 08:36:41,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:41,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:41,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:41,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:41,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:45,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:45,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:45,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:36:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:45,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:49,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:49,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-10-03 08:36:49,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-03 08:36:49,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-03 08:36:49,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5963, Invalid=16989, Unknown=0, NotChecked=0, Total=22952 [2018-10-03 08:36:49,504 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-10-03 08:36:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:50,188 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-10-03 08:36:50,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 08:36:50,188 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-10-03 08:36:50,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:50,189 INFO L225 Difference]: With dead ends: 200 [2018-10-03 08:36:50,189 INFO L226 Difference]: Without dead ends: 198 [2018-10-03 08:36:50,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12986 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=5963, Invalid=16989, Unknown=0, NotChecked=0, Total=22952 [2018-10-03 08:36:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-03 08:36:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-10-03 08:36:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-03 08:36:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-10-03 08:36:50,197 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-10-03 08:36:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:50,197 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-10-03 08:36:50,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-03 08:36:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-10-03 08:36:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-03 08:36:50,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:50,198 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-10-03 08:36:50,199 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:50,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:50,199 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-10-03 08:36:50,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:50,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:50,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:50,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:36:50,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:36:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:53,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:36:53,253 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:36:53,261 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:36:53,325 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:36:53,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:36:53,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:36:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:36:57,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:36:57,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-10-03 08:36:57,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-03 08:36:57,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-03 08:36:57,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6276, Invalid=17904, Unknown=0, NotChecked=0, Total=24180 [2018-10-03 08:36:57,558 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-10-03 08:36:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:36:58,322 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-10-03 08:36:58,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 08:36:58,322 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-10-03 08:36:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:36:58,324 INFO L225 Difference]: With dead ends: 205 [2018-10-03 08:36:58,324 INFO L226 Difference]: Without dead ends: 203 [2018-10-03 08:36:58,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13698 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=6276, Invalid=17904, Unknown=0, NotChecked=0, Total=24180 [2018-10-03 08:36:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-03 08:36:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-10-03 08:36:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-03 08:36:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-10-03 08:36:58,332 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-10-03 08:36:58,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:36:58,332 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-10-03 08:36:58,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-03 08:36:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-10-03 08:36:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 08:36:58,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:36:58,333 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-10-03 08:36:58,334 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:36:58,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:36:58,334 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-10-03 08:36:58,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:36:58,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:36:58,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:58,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:36:58,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:36:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:00,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:00,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:00,745 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:37:00,820 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-03 08:37:00,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:37:00,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:05,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:05,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-10-03 08:37:05,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-03 08:37:05,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-03 08:37:05,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6597, Invalid=18843, Unknown=0, NotChecked=0, Total=25440 [2018-10-03 08:37:05,043 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-10-03 08:37:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:37:05,764 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-10-03 08:37:05,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 08:37:05,765 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-10-03 08:37:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:37:05,766 INFO L225 Difference]: With dead ends: 210 [2018-10-03 08:37:05,766 INFO L226 Difference]: Without dead ends: 208 [2018-10-03 08:37:05,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=6597, Invalid=18843, Unknown=0, NotChecked=0, Total=25440 [2018-10-03 08:37:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-10-03 08:37:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-10-03 08:37:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-10-03 08:37:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-10-03 08:37:05,773 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-10-03 08:37:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:37:05,773 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-10-03 08:37:05,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-03 08:37:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-10-03 08:37:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-03 08:37:05,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:37:05,774 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-10-03 08:37:05,774 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:37:05,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:37:05,775 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-10-03 08:37:05,775 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:37:05,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:37:05,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:05,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:37:05,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:08,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:08,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:08,359 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:37:08,408 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:37:08,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:37:08,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:12,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:12,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-10-03 08:37:12,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-03 08:37:12,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-03 08:37:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6926, Invalid=19806, Unknown=0, NotChecked=0, Total=26732 [2018-10-03 08:37:12,720 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-10-03 08:37:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:37:13,565 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-10-03 08:37:13,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 08:37:13,566 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-10-03 08:37:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:37:13,567 INFO L225 Difference]: With dead ends: 215 [2018-10-03 08:37:13,567 INFO L226 Difference]: Without dead ends: 213 [2018-10-03 08:37:13,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15179 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=6926, Invalid=19806, Unknown=0, NotChecked=0, Total=26732 [2018-10-03 08:37:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-03 08:37:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-10-03 08:37:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-03 08:37:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-10-03 08:37:13,573 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-10-03 08:37:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:37:13,573 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-10-03 08:37:13,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-03 08:37:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-10-03 08:37:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-03 08:37:13,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:37:13,574 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-10-03 08:37:13,574 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:37:13,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:37:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-10-03 08:37:13,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:37:13,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:37:13,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:13,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:37:13,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:16,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:16,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:16,882 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:37:16,951 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-03 08:37:16,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:37:16,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:23,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:23,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:23,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-10-03 08:37:23,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-03 08:37:23,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-03 08:37:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7263, Invalid=20793, Unknown=0, NotChecked=0, Total=28056 [2018-10-03 08:37:23,456 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. [2018-10-03 08:37:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:37:24,348 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2018-10-03 08:37:24,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 08:37:24,348 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 208 [2018-10-03 08:37:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:37:24,350 INFO L225 Difference]: With dead ends: 220 [2018-10-03 08:37:24,350 INFO L226 Difference]: Without dead ends: 218 [2018-10-03 08:37:24,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15948 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=7263, Invalid=20793, Unknown=0, NotChecked=0, Total=28056 [2018-10-03 08:37:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-03 08:37:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-10-03 08:37:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-03 08:37:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2018-10-03 08:37:24,358 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 208 [2018-10-03 08:37:24,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:37:24,358 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2018-10-03 08:37:24,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-03 08:37:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2018-10-03 08:37:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-03 08:37:24,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:37:24,360 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-10-03 08:37:24,360 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:37:24,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:37:24,360 INFO L82 PathProgramCache]: Analyzing trace with hash -638782368, now seen corresponding path program 42 times [2018-10-03 08:37:24,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:37:24,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:37:24,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:24,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:37:24,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:27,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:27,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:27,543 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:37:27,611 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 08:37:27,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:37:27,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:32,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:32,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2018-10-03 08:37:32,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-03 08:37:32,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-03 08:37:32,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7608, Invalid=21804, Unknown=0, NotChecked=0, Total=29412 [2018-10-03 08:37:32,457 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand 172 states. [2018-10-03 08:37:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:37:33,241 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2018-10-03 08:37:33,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 08:37:33,242 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 213 [2018-10-03 08:37:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:37:33,243 INFO L225 Difference]: With dead ends: 225 [2018-10-03 08:37:33,243 INFO L226 Difference]: Without dead ends: 223 [2018-10-03 08:37:33,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16736 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=7608, Invalid=21804, Unknown=0, NotChecked=0, Total=29412 [2018-10-03 08:37:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-03 08:37:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-10-03 08:37:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-03 08:37:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2018-10-03 08:37:33,250 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 213 [2018-10-03 08:37:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:37:33,250 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2018-10-03 08:37:33,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-03 08:37:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2018-10-03 08:37:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 08:37:33,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:37:33,251 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-10-03 08:37:33,252 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:37:33,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:37:33,252 INFO L82 PathProgramCache]: Analyzing trace with hash 372754796, now seen corresponding path program 43 times [2018-10-03 08:37:33,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:37:33,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:37:33,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:33,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:37:33,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:35,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:35,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:35,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:37:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:35,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:40,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:40,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2018-10-03 08:37:40,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-03 08:37:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-03 08:37:40,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7961, Invalid=22839, Unknown=0, NotChecked=0, Total=30800 [2018-10-03 08:37:40,799 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand 176 states. [2018-10-03 08:37:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:37:41,700 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2018-10-03 08:37:41,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 08:37:41,700 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 218 [2018-10-03 08:37:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:37:41,701 INFO L225 Difference]: With dead ends: 230 [2018-10-03 08:37:41,701 INFO L226 Difference]: Without dead ends: 228 [2018-10-03 08:37:41,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17543 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=7961, Invalid=22839, Unknown=0, NotChecked=0, Total=30800 [2018-10-03 08:37:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-03 08:37:41,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-10-03 08:37:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-03 08:37:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2018-10-03 08:37:41,707 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 218 [2018-10-03 08:37:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:37:41,707 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2018-10-03 08:37:41,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-03 08:37:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2018-10-03 08:37:41,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-03 08:37:41,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:37:41,708 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-10-03 08:37:41,708 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:37:41,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:37:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2065417248, now seen corresponding path program 44 times [2018-10-03 08:37:41,709 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:37:41,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:37:41,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:41,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:37:41,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:44,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:44,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:44,712 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:37:44,765 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:37:44,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:37:44,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:49,915 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:49,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2018-10-03 08:37:49,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-03 08:37:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-03 08:37:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8322, Invalid=23898, Unknown=0, NotChecked=0, Total=32220 [2018-10-03 08:37:49,918 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 180 states. [2018-10-03 08:37:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:37:50,978 INFO L93 Difference]: Finished difference Result 235 states and 281 transitions. [2018-10-03 08:37:50,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 08:37:50,978 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 223 [2018-10-03 08:37:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:37:50,979 INFO L225 Difference]: With dead ends: 235 [2018-10-03 08:37:50,979 INFO L226 Difference]: Without dead ends: 233 [2018-10-03 08:37:50,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18369 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8322, Invalid=23898, Unknown=0, NotChecked=0, Total=32220 [2018-10-03 08:37:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-03 08:37:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-10-03 08:37:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-03 08:37:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2018-10-03 08:37:50,987 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 223 [2018-10-03 08:37:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:37:50,987 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2018-10-03 08:37:50,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-03 08:37:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2018-10-03 08:37:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-03 08:37:50,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:37:50,989 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-10-03 08:37:50,989 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:37:50,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:37:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1340001812, now seen corresponding path program 45 times [2018-10-03 08:37:50,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:37:50,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:37:50,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:50,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:37:50,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:37:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:37:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:54,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:37:54,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:37:54,278 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:37:54,360 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-03 08:37:54,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:37:54,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:37:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:37:59,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:37:59,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2018-10-03 08:37:59,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-03 08:37:59,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-03 08:37:59,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8691, Invalid=24981, Unknown=0, NotChecked=0, Total=33672 [2018-10-03 08:37:59,591 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand 184 states. [2018-10-03 08:38:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:38:00,507 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-10-03 08:38:00,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 08:38:00,507 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 228 [2018-10-03 08:38:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:38:00,508 INFO L225 Difference]: With dead ends: 240 [2018-10-03 08:38:00,508 INFO L226 Difference]: Without dead ends: 238 [2018-10-03 08:38:00,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19214 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=8691, Invalid=24981, Unknown=0, NotChecked=0, Total=33672 [2018-10-03 08:38:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-10-03 08:38:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-10-03 08:38:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-10-03 08:38:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2018-10-03 08:38:00,517 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 228 [2018-10-03 08:38:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:38:00,517 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2018-10-03 08:38:00,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-03 08:38:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2018-10-03 08:38:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-03 08:38:00,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:38:00,519 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-10-03 08:38:00,519 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:38:00,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:38:00,519 INFO L82 PathProgramCache]: Analyzing trace with hash 117973856, now seen corresponding path program 46 times [2018-10-03 08:38:00,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:38:00,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:38:00,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:00,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:38:00,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:38:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:03,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:38:03,725 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:38:03,754 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:38:03,825 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:38:03,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:38:03,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:38:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:09,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:38:09,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2018-10-03 08:38:09,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-03 08:38:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-03 08:38:09,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9068, Invalid=26088, Unknown=0, NotChecked=0, Total=35156 [2018-10-03 08:38:09,680 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand 188 states. [2018-10-03 08:38:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:38:10,793 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2018-10-03 08:38:10,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 08:38:10,793 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 233 [2018-10-03 08:38:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:38:10,795 INFO L225 Difference]: With dead ends: 245 [2018-10-03 08:38:10,795 INFO L226 Difference]: Without dead ends: 243 [2018-10-03 08:38:10,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20078 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=9068, Invalid=26088, Unknown=0, NotChecked=0, Total=35156 [2018-10-03 08:38:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-03 08:38:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-10-03 08:38:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-03 08:38:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2018-10-03 08:38:10,826 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 233 [2018-10-03 08:38:10,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:38:10,826 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2018-10-03 08:38:10,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-03 08:38:10,827 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2018-10-03 08:38:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-03 08:38:10,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:38:10,829 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-10-03 08:38:10,829 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:38:10,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:38:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash 365034092, now seen corresponding path program 47 times [2018-10-03 08:38:10,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:38:10,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:38:10,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:10,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:38:10,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:38:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:14,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:38:14,265 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:38:14,272 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:38:14,366 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-03 08:38:14,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:38:14,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:38:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:20,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:38:20,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2018-10-03 08:38:20,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-03 08:38:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-03 08:38:20,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=27219, Unknown=0, NotChecked=0, Total=36672 [2018-10-03 08:38:20,109 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand 192 states. [2018-10-03 08:38:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:38:21,209 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2018-10-03 08:38:21,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 08:38:21,209 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 238 [2018-10-03 08:38:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:38:21,210 INFO L225 Difference]: With dead ends: 250 [2018-10-03 08:38:21,211 INFO L226 Difference]: Without dead ends: 248 [2018-10-03 08:38:21,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20961 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=9453, Invalid=27219, Unknown=0, NotChecked=0, Total=36672 [2018-10-03 08:38:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-03 08:38:21,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-10-03 08:38:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-10-03 08:38:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2018-10-03 08:38:21,219 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 238 [2018-10-03 08:38:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:38:21,219 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2018-10-03 08:38:21,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-03 08:38:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2018-10-03 08:38:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-03 08:38:21,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:38:21,221 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-10-03 08:38:21,221 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:38:21,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:38:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1225829088, now seen corresponding path program 48 times [2018-10-03 08:38:21,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:38:21,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:38:21,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:21,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:38:21,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:38:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:24,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:38:24,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:38:24,799 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:38:24,884 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 08:38:24,884 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:38:24,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:38:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:30,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:38:30,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2018-10-03 08:38:30,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-03 08:38:30,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-03 08:38:30,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9846, Invalid=28374, Unknown=0, NotChecked=0, Total=38220 [2018-10-03 08:38:30,864 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand 196 states. [2018-10-03 08:38:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:38:31,957 INFO L93 Difference]: Finished difference Result 255 states and 305 transitions. [2018-10-03 08:38:31,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 08:38:31,958 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 243 [2018-10-03 08:38:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:38:31,959 INFO L225 Difference]: With dead ends: 255 [2018-10-03 08:38:31,959 INFO L226 Difference]: Without dead ends: 253 [2018-10-03 08:38:31,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21863 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=9846, Invalid=28374, Unknown=0, NotChecked=0, Total=38220 [2018-10-03 08:38:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-03 08:38:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-10-03 08:38:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-03 08:38:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2018-10-03 08:38:31,965 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 243 [2018-10-03 08:38:31,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:38:31,966 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2018-10-03 08:38:31,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-03 08:38:31,966 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2018-10-03 08:38:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-03 08:38:31,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:38:31,967 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-10-03 08:38:31,968 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:38:31,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:38:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash 291644140, now seen corresponding path program 49 times [2018-10-03 08:38:31,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:38:31,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:38:31,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:31,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:38:31,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:38:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:38:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:35,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:38:35,641 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:38:35,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:38:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:38:35,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:38:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:38:41,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:38:41,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2018-10-03 08:38:41,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-03 08:38:41,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-03 08:38:41,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10247, Invalid=29553, Unknown=0, NotChecked=0, Total=39800 [2018-10-03 08:38:41,893 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand 200 states. Received shutdown request... [2018-10-03 08:38:41,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 08:38:41,956 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 08:38:41,962 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 08:38:41,962 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 08:38:41 BoogieIcfgContainer [2018-10-03 08:38:41,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 08:38:41,963 INFO L168 Benchmark]: Toolchain (without parser) took 238013.72 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -99.1 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 437.7 MB). Peak memory consumption was 338.6 MB. Max. memory is 7.1 GB. [2018-10-03 08:38:41,964 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 08:38:41,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 08:38:41,964 INFO L168 Benchmark]: Boogie Preprocessor took 27.51 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 08:38:41,965 INFO L168 Benchmark]: RCFGBuilder took 385.38 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. [2018-10-03 08:38:41,965 INFO L168 Benchmark]: TraceAbstraction took 237551.19 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -99.1 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 416.5 MB). Peak memory consumption was 317.4 MB. Max. memory is 7.1 GB. [2018-10-03 08:38:41,968 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 0.31 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.65 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 27.51 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 385.38 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 237551.19 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -99.1 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 416.5 MB). Peak memory consumption was 317.4 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 (249states) and FLOYD_HOARE automaton (currently 3 states, 200 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 51 OverallIterations, 49 TraceHistogramMax, 25.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 506 SDtfs, 16680 SDslu, 14594 SDs, 0 SdLazy, 14884 SolverSat, 3068 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8775 GetRequests, 3775 SyntacticMatches, 0 SemanticMatches, 5000 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383376 ImplicationChecksByTransitivity, 196.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 50 MinimizatonAttempts, 197 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 205.7s InterpolantComputationTime, 12555 NumberOfCodeBlocks, 12555 NumberOfCodeBlocksAsserted, 732 NumberOfCheckSat, 12455 ConstructedInterpolants, 6174 QuantifiedInterpolants, 20383669 SizeOfPredicates, 1372 NumberOfNonLiveVariables, 10584 ConjunctsInSsa, 2646 ConjunctsInUnsatCore, 100 InterpolantComputations, 2 PerfectInterpolantSequences, 1/198451 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_08-38-41-978.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_08-38-41-978.csv Completed graceful shutdown