java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:19:15,633 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:19:15,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:19:15,647 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:19:15,648 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:19:15,648 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:19:15,650 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:19:15,651 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:19:15,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:19:15,654 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:19:15,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 09:19:15,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 09:19:15,656 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 09:19:15,657 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 09:19:15,658 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 09:19:15,659 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 09:19:15,660 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 09:19:15,663 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 09:19:15,667 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 09:19:15,668 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 09:19:15,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 09:19:15,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 09:19:15,680 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-03 09:19:15,695 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-03 09:19:15,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:19:15,710 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:19:15,711 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:19:15,711 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:19:15,712 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:19:15,712 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:19:15,712 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:19:15,712 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:19:15,713 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:19:15,713 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:19:15,713 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:19:15,713 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:19:15,713 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:19:15,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:19:15,714 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:19:15,714 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:19:15,714 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:19:15,714 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:19:15,715 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:19:15,715 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:19:15,715 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:19:15,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:19:15,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:19:15,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:19:15,716 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:19:15,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:19:15,716 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:19:15,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:19:15,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:19:15,717 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:19:15,717 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:19:15,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:19:15,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:19:15,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:19:15,787 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:19:15,788 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:19:15,789 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl [2018-10-03 09:19:15,789 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl' [2018-10-03 09:19:15,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:19:15,837 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:19:15,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:19:15,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:19:15,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:19:15,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,877 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-03 09:19:15,878 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-03 09:19:15,878 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-03 09:19:15,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:19:15,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:19:15,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:19:15,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:19:15,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... [2018-10-03 09:19:15,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:19:15,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:19:15,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:19:15,903 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:19:15,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:19:15,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-03 09:19:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-03 09:19:15,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-03 09:19:16,127 INFO L337 CfgBuilder]: Using library mode [2018-10-03 09:19:16,127 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:19:16 BoogieIcfgContainer [2018-10-03 09:19:16,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:19:16,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:19:16,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:19:16,132 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:19:16,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:19:15" (1/2) ... [2018-10-03 09:19:16,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b70d378 and model type Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:19:16, skipping insertion in model container [2018-10-03 09:19:16,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:19:16" (2/2) ... [2018-10-03 09:19:16,135 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg.bpl [2018-10-03 09:19:16,145 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:19:16,152 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:19:16,201 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:19:16,202 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:19:16,202 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:19:16,202 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:19:16,202 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:19:16,203 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:19:16,203 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:19:16,203 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:19:16,203 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:19:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-03 09:19:16,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-03 09:19:16,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:16,232 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-03 09:19:16,235 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:16,245 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:16,246 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-03 09:19:16,248 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:16,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:16,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:16,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:16,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:16,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:19:16,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:19:16,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:19:16,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:19:16,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:16,388 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-03 09:19:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:16,428 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-03 09:19:16,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:19:16,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-03 09:19:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:16,441 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:19:16,441 INFO L226 Difference]: Without dead ends: 5 [2018-10-03 09:19:16,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:19:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-03 09:19:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-03 09:19:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-03 09:19:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-03 09:19:16,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-03 09:19:16,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:16,480 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-03 09:19:16,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:19:16,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-03 09:19:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:19:16,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:16,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:19:16,481 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:16,482 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-03 09:19:16,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:16,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:16,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:16,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:16,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:16,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:16,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:16,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:16,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:16,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:16,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:19:16,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:19:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:19:16,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:16,783 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-03 09:19:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:16,868 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-03 09:19:16,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:19:16,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-03 09:19:16,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:16,869 INFO L225 Difference]: With dead ends: 8 [2018-10-03 09:19:16,869 INFO L226 Difference]: Without dead ends: 6 [2018-10-03 09:19:16,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-03 09:19:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-03 09:19:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-03 09:19:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-03 09:19:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-03 09:19:16,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-03 09:19:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:16,873 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-03 09:19:16,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:19:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-03 09:19:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-03 09:19:16,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:16,874 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-03 09:19:16,874 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:16,874 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-03 09:19:16,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:16,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:16,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:16,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:16,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:17,036 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:17,048 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:17,060 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:17,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:17,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:17,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:19:17,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:19:17,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:19:17,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:17,114 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-03 09:19:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:17,158 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-03 09:19:17,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:19:17,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-03 09:19:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:17,159 INFO L225 Difference]: With dead ends: 9 [2018-10-03 09:19:17,159 INFO L226 Difference]: Without dead ends: 7 [2018-10-03 09:19:17,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:19:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-03 09:19:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-03 09:19:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:19:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:19:17,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-03 09:19:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:17,162 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:19:17,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:19:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:19:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:19:17,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:17,164 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-03 09:19:17,164 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:17,164 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-03 09:19:17,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:17,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:17,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:17,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:17,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:17,284 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:17,293 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:17,312 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-03 09:19:17,312 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:17,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:17,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:19:17,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:19:17,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:19:17,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:17,399 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-03 09:19:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:17,417 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-03 09:19:17,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:19:17,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-03 09:19:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:17,419 INFO L225 Difference]: With dead ends: 10 [2018-10-03 09:19:17,419 INFO L226 Difference]: Without dead ends: 8 [2018-10-03 09:19:17,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-03 09:19:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-03 09:19:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-03 09:19:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-03 09:19:17,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-03 09:19:17,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-03 09:19:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:17,422 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-03 09:19:17,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:19:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-03 09:19:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:19:17,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:17,423 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-03 09:19:17,424 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:17,424 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:17,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-03 09:19:17,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:17,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:17,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:17,425 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:17,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:17,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:17,709 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:17,738 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:17,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:17,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:17,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:19:17,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:19:17,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:19:17,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:17,799 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-03 09:19:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:17,836 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-03 09:19:17,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:19:17,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-03 09:19:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:17,838 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:19:17,838 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:19:17,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 5 [2018-10-03 09:19:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:19:17,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:19:17,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:19:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:19:17,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-03 09:19:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:17,844 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:19:17,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:19:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:19:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:19:17,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:17,845 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-03 09:19:17,848 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:17,848 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:17,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-03 09:19:17,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:17,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:17,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:17,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:17,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:17,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:17,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:17,976 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:18,042 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-03 09:19:18,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:18,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:18,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:18,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:19:18,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:19:18,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:19:18,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:18,139 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-03 09:19:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:18,170 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-03 09:19:18,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:19:18,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-03 09:19:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:18,172 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:19:18,172 INFO L226 Difference]: Without dead ends: 10 [2018-10-03 09:19:18,172 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-03 09:19:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-03 09:19:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-03 09:19:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-03 09:19:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-03 09:19:18,175 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-03 09:19:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:18,176 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-03 09:19:18,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:19:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-03 09:19:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-03 09:19:18,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:18,177 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-03 09:19:18,177 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:18,177 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:18,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-03 09:19:18,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:18,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:18,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:18,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:18,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:18,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:18,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:18,299 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:18,308 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-03 09:19:18,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:18,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:18,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:18,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:19:18,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:19:18,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:19:18,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:18,376 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-03 09:19:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:18,403 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-03 09:19:18,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:19:18,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-03 09:19:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:18,405 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:19:18,405 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:19:18,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-03 09:19:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:19:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:19:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:19:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-03 09:19:18,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-03 09:19:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:18,410 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-03 09:19:18,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:19:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-03 09:19:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:19:18,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:18,411 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-03 09:19:18,411 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:18,411 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-03 09:19:18,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:18,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:18,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:18,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:18,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:18,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:18,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:18,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:18,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:19,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:19,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:19:19,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:19:19,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:19:19,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:19,048 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-03 09:19:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:19,100 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-03 09:19:19,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:19:19,101 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-03 09:19:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:19,101 INFO L225 Difference]: With dead ends: 14 [2018-10-03 09:19:19,102 INFO L226 Difference]: Without dead ends: 12 [2018-10-03 09:19:19,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 8 [2018-10-03 09:19:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-03 09:19:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-03 09:19:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-03 09:19:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-03 09:19:19,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-03 09:19:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:19,105 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-03 09:19:19,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:19:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-03 09:19:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-03 09:19:19,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:19,106 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-03 09:19:19,107 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:19,107 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:19,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-03 09:19:19,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:19,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:19,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:19,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:19,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:19,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:19,286 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:19,297 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:19,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:19,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:19,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:19,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:19,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:19:19,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:19:19,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:19:19,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:19,368 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-03 09:19:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:19,416 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-03 09:19:19,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:19:19,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-03 09:19:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:19,417 INFO L225 Difference]: With dead ends: 15 [2018-10-03 09:19:19,417 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:19:19,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9 [2018-10-03 09:19:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:19:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:19:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:19:19,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-03 09:19:19,421 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-03 09:19:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:19,421 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-03 09:19:19,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:19:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-03 09:19:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:19:19,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:19,422 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-03 09:19:19,422 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:19,423 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:19,423 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-03 09:19:19,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:19,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:19,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:19,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:19,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:19,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:19,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:19,561 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:19,578 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-03 09:19:19,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:19,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:19,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:19,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:19:19,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:19:19,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:19:19,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:19,642 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-03 09:19:19,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:19,677 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-03 09:19:19,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:19:19,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-03 09:19:19,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:19,679 INFO L225 Difference]: With dead ends: 16 [2018-10-03 09:19:19,679 INFO L226 Difference]: Without dead ends: 14 [2018-10-03 09:19:19,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-03 09:19:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-03 09:19:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-03 09:19:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 09:19:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-03 09:19:19,684 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-03 09:19:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:19,684 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-03 09:19:19,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:19:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-03 09:19:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 09:19:19,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:19,685 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-03 09:19:19,685 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:19,686 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-03 09:19:19,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:19,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:19,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:19,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:19,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:19,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:19,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:19,930 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:19,946 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:19,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:19,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:20,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:20,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:19:20,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:19:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:19:20,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:20,016 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-03 09:19:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:20,064 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-03 09:19:20,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:19:20,065 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-03 09:19:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:20,065 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:19:20,066 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:19:20,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-03 09:19:20,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:19:20,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:19:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:19:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-03 09:19:20,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-03 09:19:20,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:20,069 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-03 09:19:20,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:19:20,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-03 09:19:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:19:20,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:20,070 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-03 09:19:20,071 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:20,071 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:20,071 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-03 09:19:20,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:20,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:20,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:20,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:20,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:20,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:20,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:20,495 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:20,506 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-03 09:19:20,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:20,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:20,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:20,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:19:20,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:19:20,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:19:20,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:20,587 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-03 09:19:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:20,650 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-03 09:19:20,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:19:20,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-03 09:19:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:20,651 INFO L225 Difference]: With dead ends: 18 [2018-10-03 09:19:20,651 INFO L226 Difference]: Without dead ends: 16 [2018-10-03 09:19:20,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-03 09:19:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-03 09:19:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-03 09:19:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-03 09:19:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-03 09:19:20,654 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-03 09:19:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:20,654 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-03 09:19:20,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:19:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-03 09:19:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-03 09:19:20,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:20,655 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-03 09:19:20,656 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:20,656 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:20,656 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-03 09:19:20,656 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:20,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:20,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:20,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:20,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:20,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:20,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:20,810 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:20,824 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:19:20,825 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:20,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:20,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:20,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:19:20,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:19:20,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:19:20,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:20,959 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-03 09:19:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:20,996 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-03 09:19:20,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:19:20,997 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-03 09:19:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:20,997 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:19:20,997 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:19:20,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 13 [2018-10-03 09:19:20,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:19:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-03 09:19:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-03 09:19:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-03 09:19:21,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-03 09:19:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:21,003 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-03 09:19:21,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:19:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-03 09:19:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 09:19:21,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:21,004 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-03 09:19:21,004 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:21,004 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:21,005 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-03 09:19:21,005 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:21,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:21,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:21,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:21,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:21,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:21,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:21,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:21,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:21,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:21,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:19:21,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:19:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:19:21,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:21,327 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-03 09:19:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:21,497 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-03 09:19:21,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:19:21,499 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-03 09:19:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:21,500 INFO L225 Difference]: With dead ends: 20 [2018-10-03 09:19:21,500 INFO L226 Difference]: Without dead ends: 18 [2018-10-03 09:19:21,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-03 09:19:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-03 09:19:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-03 09:19:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-03 09:19:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-03 09:19:21,504 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-03 09:19:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:21,504 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-03 09:19:21,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:19:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-03 09:19:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-03 09:19:21,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:21,505 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-03 09:19:21,506 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:21,506 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-03 09:19:21,506 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:21,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:21,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:21,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:21,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:21,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:21,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:21,772 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:21,798 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:21,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:21,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:21,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:21,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:19:21,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:19:21,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:19:21,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:21,873 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-03 09:19:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:21,917 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-03 09:19:21,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:19:21,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-03 09:19:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:21,919 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:19:21,919 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:19:21,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 15 [2018-10-03 09:19:21,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:19:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:19:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:19:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-03 09:19:21,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-03 09:19:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:21,924 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-03 09:19:21,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:19:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-03 09:19:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:19:21,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:21,925 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-03 09:19:21,926 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:21,926 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-03 09:19:21,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:21,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:21,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:21,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:21,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:22,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:22,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:22,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:22,258 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-03 09:19:22,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:22,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:22,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:22,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:19:22,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:19:22,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:19:22,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:22,347 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-03 09:19:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:22,380 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-03 09:19:22,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:19:22,381 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-03 09:19:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:22,382 INFO L225 Difference]: With dead ends: 22 [2018-10-03 09:19:22,382 INFO L226 Difference]: Without dead ends: 20 [2018-10-03 09:19:22,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 16 [2018-10-03 09:19:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-03 09:19:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-03 09:19:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-03 09:19:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-03 09:19:22,387 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-03 09:19:22,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:22,387 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-03 09:19:22,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:19:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-03 09:19:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-03 09:19:22,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:22,388 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-03 09:19:22,388 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:22,388 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:22,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-03 09:19:22,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:22,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:22,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:22,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:22,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:22,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:22,888 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:22,897 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:22,931 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:22,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:22,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:23,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:23,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:19:23,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:19:23,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:19:23,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:23,119 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-03 09:19:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:23,229 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-03 09:19:23,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:19:23,230 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-03 09:19:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:23,231 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:19:23,231 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:19:23,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 17 [2018-10-03 09:19:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:19:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:19:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:19:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-03 09:19:23,234 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-03 09:19:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:23,234 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-03 09:19:23,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:19:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-03 09:19:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:19:23,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:23,235 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-03 09:19:23,235 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:23,235 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-03 09:19:23,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:23,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:23,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:23,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:23,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:23,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:23,482 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:23,536 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-03 09:19:23,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:23,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:23,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:23,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:19:23,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:19:23,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:19:23,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:23,632 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-03 09:19:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:23,705 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-03 09:19:23,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:19:23,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-03 09:19:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:23,706 INFO L225 Difference]: With dead ends: 24 [2018-10-03 09:19:23,706 INFO L226 Difference]: Without dead ends: 22 [2018-10-03 09:19:23,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 18 [2018-10-03 09:19:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-03 09:19:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-03 09:19:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-03 09:19:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-03 09:19:23,711 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-03 09:19:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:23,711 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-03 09:19:23,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:19:23,712 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-03 09:19:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-03 09:19:23,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:23,712 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-03 09:19:23,713 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:23,713 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-03 09:19:23,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:23,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:23,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:23,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:23,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:23,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:23,909 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:23,919 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:23,936 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-03 09:19:23,936 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:23,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:24,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:24,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:19:24,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:19:24,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:19:24,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:24,214 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-03 09:19:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:24,255 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-03 09:19:24,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:19:24,256 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-03 09:19:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:24,257 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:19:24,257 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:19:24,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 19 [2018-10-03 09:19:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:19:24,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:19:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:19:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-03 09:19:24,261 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-03 09:19:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:24,261 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-03 09:19:24,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:19:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-03 09:19:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:19:24,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:24,262 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-03 09:19:24,262 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:24,262 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:24,262 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-03 09:19:24,263 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:24,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:24,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:24,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:24,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:24,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:24,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:24,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:24,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:24,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:24,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:19:24,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:19:24,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:19:24,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:24,672 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-03 09:19:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:24,774 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-03 09:19:24,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:19:24,774 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-03 09:19:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:24,775 INFO L225 Difference]: With dead ends: 26 [2018-10-03 09:19:24,776 INFO L226 Difference]: Without dead ends: 24 [2018-10-03 09:19:24,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 20 [2018-10-03 09:19:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-03 09:19:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-03 09:19:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-03 09:19:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-03 09:19:24,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-03 09:19:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:24,779 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-03 09:19:24,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:19:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-03 09:19:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 09:19:24,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:24,780 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-03 09:19:24,781 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:24,781 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-03 09:19:24,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:24,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:24,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:24,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:24,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:25,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:25,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:25,216 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:25,232 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:25,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:25,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:25,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:25,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:19:25,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:19:25,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:19:25,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:25,323 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-03 09:19:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:25,361 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-03 09:19:25,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:19:25,365 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-03 09:19:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:25,366 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:19:25,366 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:19:25,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 21 [2018-10-03 09:19:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:19:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:19:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:19:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-03 09:19:25,368 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-03 09:19:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:25,369 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-03 09:19:25,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:19:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-03 09:19:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:19:25,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:25,369 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-03 09:19:25,370 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:25,370 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-03 09:19:25,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:25,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:25,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:25,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:25,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:25,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:25,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:25,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:25,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-03 09:19:25,932 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:25,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:26,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:26,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:19:26,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:19:26,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:19:26,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:26,213 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-03 09:19:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:26,417 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-03 09:19:26,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:19:26,419 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-03 09:19:26,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:26,419 INFO L225 Difference]: With dead ends: 28 [2018-10-03 09:19:26,419 INFO L226 Difference]: Without dead ends: 26 [2018-10-03 09:19:26,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 22 [2018-10-03 09:19:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-03 09:19:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-03 09:19:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-03 09:19:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-03 09:19:26,423 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-03 09:19:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:26,424 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-03 09:19:26,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:19:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-03 09:19:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-03 09:19:26,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:26,425 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-03 09:19:26,425 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:26,425 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-03 09:19:26,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:26,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:26,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:26,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:26,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:26,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:26,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:26,747 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:26,781 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:26,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:26,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:26,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:26,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:19:26,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:19:26,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:19:26,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:26,983 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-03 09:19:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:27,075 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-03 09:19:27,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:19:27,075 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-03 09:19:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:27,076 INFO L225 Difference]: With dead ends: 29 [2018-10-03 09:19:27,076 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:19:27,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 23 [2018-10-03 09:19:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:19:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:19:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:19:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-03 09:19:27,080 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-03 09:19:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:27,081 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-03 09:19:27,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:19:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-03 09:19:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:19:27,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:27,082 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-03 09:19:27,082 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:27,082 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-03 09:19:27,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:27,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:27,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:27,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:27,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:27,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:27,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:27,532 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:27,550 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-03 09:19:27,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:27,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:27,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:27,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:19:27,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:19:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:19:27,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:27,622 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-03 09:19:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:27,686 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-03 09:19:27,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:19:27,688 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-03 09:19:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:27,689 INFO L225 Difference]: With dead ends: 30 [2018-10-03 09:19:27,689 INFO L226 Difference]: Without dead ends: 28 [2018-10-03 09:19:27,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 24 [2018-10-03 09:19:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-03 09:19:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-03 09:19:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-03 09:19:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-03 09:19:27,692 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-03 09:19:27,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:27,693 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-03 09:19:27,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:19:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-03 09:19:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-03 09:19:27,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:27,694 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-03 09:19:27,694 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:27,694 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-03 09:19:27,694 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:27,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:27,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:27,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:27,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:27,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:27,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:27,995 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:28,019 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:19:28,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:28,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:28,161 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:28,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:19:28,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:19:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:19:28,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:28,162 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-03 09:19:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:28,244 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-03 09:19:28,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:19:28,245 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-03 09:19:28,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:28,246 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:19:28,246 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:19:28,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 25 [2018-10-03 09:19:28,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:19:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:19:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:19:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-03 09:19:28,249 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-03 09:19:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:28,250 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-03 09:19:28,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:19:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-03 09:19:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:19:28,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:28,251 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-03 09:19:28,251 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:28,252 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:28,252 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-03 09:19:28,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:28,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:28,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:28,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:28,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:28,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:28,627 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:28,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:28,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:28,719 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:28,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:28,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:19:28,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:19:28,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:19:28,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:28,740 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-03 09:19:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:28,789 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-03 09:19:28,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:19:28,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-03 09:19:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:28,790 INFO L225 Difference]: With dead ends: 32 [2018-10-03 09:19:28,790 INFO L226 Difference]: Without dead ends: 30 [2018-10-03 09:19:28,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 26 [2018-10-03 09:19:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-03 09:19:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-03 09:19:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-03 09:19:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-03 09:19:28,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-03 09:19:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:28,795 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-03 09:19:28,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:19:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-03 09:19:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-03 09:19:28,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:28,795 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-03 09:19:28,796 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:28,796 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-03 09:19:28,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:28,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:28,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:28,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:28,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:29,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:29,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:29,734 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:29,751 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:29,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:29,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:29,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:29,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:19:29,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:19:29,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:19:29,824 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:29,824 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-03 09:19:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:29,903 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-03 09:19:29,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:19:29,903 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-03 09:19:29,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:29,904 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:19:29,904 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:19:29,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 27 [2018-10-03 09:19:29,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:19:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:19:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:19:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-03 09:19:29,908 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-03 09:19:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:29,909 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-03 09:19:29,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:19:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-03 09:19:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:19:29,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:29,909 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-03 09:19:29,910 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:29,910 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-03 09:19:29,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:29,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:29,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:29,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:29,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:30,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:30,200 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:30,208 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:30,239 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-03 09:19:30,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:30,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:30,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:30,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:19:30,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:19:30,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:19:30,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:30,413 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-03 09:19:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:30,453 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-03 09:19:30,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:19:30,454 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-03 09:19:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:30,455 INFO L225 Difference]: With dead ends: 34 [2018-10-03 09:19:30,455 INFO L226 Difference]: Without dead ends: 32 [2018-10-03 09:19:30,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 28 [2018-10-03 09:19:30,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-03 09:19:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-03 09:19:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-03 09:19:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-03 09:19:30,460 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-03 09:19:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:30,461 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-03 09:19:30,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:19:30,461 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-03 09:19:30,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-03 09:19:30,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:30,462 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-03 09:19:30,462 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:30,462 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:30,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-03 09:19:30,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:30,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:30,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:30,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:30,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:31,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:31,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:31,125 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:31,166 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:31,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:31,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:31,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:31,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:19:31,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:19:31,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:19:31,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:31,264 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-03 09:19:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:31,318 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-03 09:19:31,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:19:31,319 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-03 09:19:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:31,320 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:19:31,320 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:19:31,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 29 [2018-10-03 09:19:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:19:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:19:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:19:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-03 09:19:31,324 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-03 09:19:31,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:31,324 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-03 09:19:31,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:19:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-03 09:19:31,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:19:31,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:31,325 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-03 09:19:31,325 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:31,325 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:31,325 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-03 09:19:31,325 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:31,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:31,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:31,326 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:31,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:31,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:31,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:31,843 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:31,864 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-03 09:19:31,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:31,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:31,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:31,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:19:31,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:19:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:19:31,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:31,965 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-03 09:19:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:32,012 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-03 09:19:32,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:19:32,013 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-03 09:19:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:32,013 INFO L225 Difference]: With dead ends: 36 [2018-10-03 09:19:32,013 INFO L226 Difference]: Without dead ends: 34 [2018-10-03 09:19:32,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 30 [2018-10-03 09:19:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-03 09:19:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-03 09:19:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-03 09:19:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-03 09:19:32,017 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-03 09:19:32,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:32,018 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-03 09:19:32,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:19:32,018 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-03 09:19:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 09:19:32,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:32,018 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-03 09:19:32,019 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:32,019 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:32,019 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-03 09:19:32,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:32,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:32,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:32,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:32,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:32,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:32,532 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:32,554 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:32,610 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-03 09:19:32,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:32,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:32,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:32,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:19:32,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:19:32,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:19:32,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:32,735 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-03 09:19:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:32,785 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-03 09:19:32,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:19:32,785 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-03 09:19:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:32,786 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:19:32,786 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:19:32,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 31 [2018-10-03 09:19:32,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:19:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:19:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:19:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-03 09:19:32,790 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-03 09:19:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:32,790 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-03 09:19:32,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:19:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-03 09:19:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:19:32,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:32,791 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-03 09:19:32,791 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:32,791 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:32,792 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-03 09:19:32,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:32,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:32,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:32,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:32,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:33,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:33,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:33,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:33,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:33,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:33,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:19:33,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:19:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:19:33,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:33,386 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-03 09:19:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:33,582 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-03 09:19:33,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:19:33,583 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-03 09:19:33,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:33,584 INFO L225 Difference]: With dead ends: 38 [2018-10-03 09:19:33,584 INFO L226 Difference]: Without dead ends: 36 [2018-10-03 09:19:33,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 32 [2018-10-03 09:19:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-03 09:19:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-03 09:19:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-03 09:19:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-03 09:19:33,589 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-03 09:19:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:33,589 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-03 09:19:33,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:19:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-03 09:19:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-03 09:19:33,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:33,590 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-03 09:19:33,590 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:33,590 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-03 09:19:33,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:33,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:33,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:33,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:33,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:34,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:34,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:34,069 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:34,087 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:34,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:34,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:34,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:34,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:19:34,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:19:34,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:19:34,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:34,178 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-03 09:19:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:34,218 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-03 09:19:34,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:19:34,219 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-03 09:19:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:34,219 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:19:34,220 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:19:34,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 33 [2018-10-03 09:19:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:19:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:19:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:19:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-03 09:19:34,223 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-03 09:19:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:34,224 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-03 09:19:34,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:19:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-03 09:19:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:19:34,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:34,224 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-03 09:19:34,225 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:34,225 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-03 09:19:34,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:34,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:34,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:34,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:34,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:34,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:34,861 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:34,869 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:34,896 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-03 09:19:34,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:34,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:35,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:35,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:19:35,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:19:35,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:19:35,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:35,022 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-03 09:19:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:35,080 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-03 09:19:35,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:19:35,081 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-03 09:19:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:35,081 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:19:35,081 INFO L226 Difference]: Without dead ends: 38 [2018-10-03 09:19:35,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 34 [2018-10-03 09:19:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-03 09:19:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-03 09:19:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-03 09:19:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-03 09:19:35,085 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-03 09:19:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:35,085 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-03 09:19:35,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:19:35,085 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-03 09:19:35,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-03 09:19:35,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:35,085 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-03 09:19:35,085 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:35,086 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:35,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-03 09:19:35,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:35,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:35,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:35,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:35,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:35,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:35,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:35,544 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:35,584 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:35,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:35,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:35,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:35,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:19:35,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:19:35,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:19:35,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:35,851 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-03 09:19:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:35,941 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-03 09:19:35,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:19:35,941 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-03 09:19:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:35,942 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:19:35,942 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:19:35,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 35 [2018-10-03 09:19:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:19:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:19:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:19:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-03 09:19:35,945 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-03 09:19:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:35,945 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-03 09:19:35,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:19:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-03 09:19:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:19:35,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:35,946 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-03 09:19:35,946 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:35,946 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-03 09:19:35,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:35,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:35,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:35,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:35,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:36,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:36,777 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:36,784 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:36,825 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-03 09:19:36,825 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:36,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:37,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:37,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:19:37,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:19:37,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:19:37,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:37,072 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-03 09:19:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:37,576 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-03 09:19:37,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:19:37,576 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-03 09:19:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:37,577 INFO L225 Difference]: With dead ends: 42 [2018-10-03 09:19:37,577 INFO L226 Difference]: Without dead ends: 40 [2018-10-03 09:19:37,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 36 [2018-10-03 09:19:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-03 09:19:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-03 09:19:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-03 09:19:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-03 09:19:37,580 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-03 09:19:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:37,580 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-03 09:19:37,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:19:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-03 09:19:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-03 09:19:37,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:37,581 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-03 09:19:37,581 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:37,581 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-03 09:19:37,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:37,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:37,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:37,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:37,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:38,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:38,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:38,237 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:38,263 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:19:38,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:38,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:38,350 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:38,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:19:38,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:19:38,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:19:38,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:38,351 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-03 09:19:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:38,412 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-03 09:19:38,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:19:38,413 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-03 09:19:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:38,413 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:19:38,414 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:19:38,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 37 [2018-10-03 09:19:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:19:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:19:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:19:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-03 09:19:38,417 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-03 09:19:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:38,417 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-03 09:19:38,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:19:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-03 09:19:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:19:38,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:38,418 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-03 09:19:38,418 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:38,418 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-03 09:19:38,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:38,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:38,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:38,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:38,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:39,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:39,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:39,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:39,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:39,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:39,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:19:39,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:19:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:19:39,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:39,305 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-03 09:19:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:39,411 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-03 09:19:39,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:19:39,420 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-03 09:19:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:39,420 INFO L225 Difference]: With dead ends: 44 [2018-10-03 09:19:39,420 INFO L226 Difference]: Without dead ends: 42 [2018-10-03 09:19:39,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 38 [2018-10-03 09:19:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-03 09:19:39,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-03 09:19:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-03 09:19:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-03 09:19:39,423 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-03 09:19:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:39,423 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-03 09:19:39,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:19:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-03 09:19:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-03 09:19:39,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:39,424 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-03 09:19:39,424 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:39,425 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-03 09:19:39,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:39,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:39,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:39,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:39,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:40,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:40,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:40,591 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:40,614 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:40,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:40,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:40,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:40,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:19:40,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:19:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:19:40,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:40,732 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-03 09:19:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:40,844 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-03 09:19:40,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:19:40,844 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-03 09:19:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:40,845 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:19:40,845 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:19:40,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 39 [2018-10-03 09:19:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:19:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:19:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:19:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-03 09:19:40,847 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-03 09:19:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:40,847 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-03 09:19:40,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:19:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-03 09:19:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:19:40,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:40,848 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-03 09:19:40,848 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:40,848 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:40,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-03 09:19:40,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:40,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:40,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:40,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:40,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:41,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:41,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:41,820 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:41,849 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-03 09:19:41,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:41,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:41,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:41,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:19:41,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:19:41,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:19:41,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:41,952 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-03 09:19:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:42,018 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-03 09:19:42,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:19:42,019 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-03 09:19:42,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:42,019 INFO L225 Difference]: With dead ends: 46 [2018-10-03 09:19:42,020 INFO L226 Difference]: Without dead ends: 44 [2018-10-03 09:19:42,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 40 [2018-10-03 09:19:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-03 09:19:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-03 09:19:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-03 09:19:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-03 09:19:42,022 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-03 09:19:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:42,023 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-03 09:19:42,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:19:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-03 09:19:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 09:19:42,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:42,024 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-03 09:19:42,024 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:42,024 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-03 09:19:42,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:42,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:42,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:42,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:42,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:43,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:43,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:43,429 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:43,452 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:43,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:43,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:43,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:43,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:19:43,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:19:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:19:43,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:43,574 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-03 09:19:43,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:43,652 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-03 09:19:43,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:19:43,653 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-03 09:19:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:43,654 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:19:43,654 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:19:43,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 41 [2018-10-03 09:19:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:19:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:19:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:19:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-03 09:19:43,656 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-03 09:19:43,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:43,657 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-03 09:19:43,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:19:43,657 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-03 09:19:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:19:43,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:43,657 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-03 09:19:43,657 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:43,657 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:43,658 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-03 09:19:43,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:43,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:43,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:43,658 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:43,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:45,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:45,044 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:45,052 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:45,083 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-03 09:19:45,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:45,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:45,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:45,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:19:45,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:19:45,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:19:45,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:45,191 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-03 09:19:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:45,345 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-03 09:19:45,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:19:45,345 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-03 09:19:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:45,346 INFO L225 Difference]: With dead ends: 48 [2018-10-03 09:19:45,346 INFO L226 Difference]: Without dead ends: 46 [2018-10-03 09:19:45,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 42 [2018-10-03 09:19:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-03 09:19:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-03 09:19:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-03 09:19:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-03 09:19:45,349 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-03 09:19:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:45,349 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-03 09:19:45,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:19:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-03 09:19:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-03 09:19:45,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:45,350 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-03 09:19:45,350 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:45,350 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:45,350 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-03 09:19:45,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:45,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:45,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:45,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:45,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:46,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:46,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:46,662 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:46,695 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-03 09:19:46,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:46,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:46,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:46,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:19:46,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:19:46,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:19:46,824 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:46,825 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-03 09:19:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:46,909 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-03 09:19:46,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:19:46,910 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-03 09:19:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:46,911 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:19:46,911 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:19:46,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 43 [2018-10-03 09:19:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:19:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:19:46,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:19:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-03 09:19:46,914 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-03 09:19:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:46,914 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-03 09:19:46,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:19:46,915 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-03 09:19:46,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:19:46,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:46,915 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-03 09:19:46,915 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:46,915 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:46,916 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-03 09:19:46,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:46,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:46,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:46,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:46,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:47,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:47,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:47,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:48,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:48,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:48,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:19:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:19:48,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:19:48,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:48,113 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-03 09:19:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:48,266 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-03 09:19:48,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:19:48,266 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-03 09:19:48,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:48,267 INFO L225 Difference]: With dead ends: 50 [2018-10-03 09:19:48,267 INFO L226 Difference]: Without dead ends: 48 [2018-10-03 09:19:48,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.9s impTime 44 [2018-10-03 09:19:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-03 09:19:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-03 09:19:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-03 09:19:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-03 09:19:48,270 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-03 09:19:48,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:48,270 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-03 09:19:48,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:19:48,271 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-03 09:19:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-03 09:19:48,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:48,271 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-03 09:19:48,271 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:48,271 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:48,272 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-03 09:19:48,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:48,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:48,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:48,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:48,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:49,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:49,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:49,237 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:49,262 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:49,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:49,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:49,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:49,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:19:49,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:19:49,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:19:49,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:49,367 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-03 09:19:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:49,442 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-03 09:19:49,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:19:49,443 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-03 09:19:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:49,443 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:19:49,444 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:19:49,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime 45 [2018-10-03 09:19:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:19:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:19:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:19:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-03 09:19:49,447 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-03 09:19:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:49,447 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-03 09:19:49,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:19:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-03 09:19:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:19:49,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:49,448 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-03 09:19:49,448 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:49,448 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:49,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-03 09:19:49,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:49,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:49,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:49,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:49,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:50,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:50,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:50,260 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:50,299 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-03 09:19:50,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:50,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:50,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:50,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:19:50,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:19:50,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:19:50,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:50,439 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-03 09:19:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:50,671 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-03 09:19:50,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:19:50,672 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-03 09:19:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:50,673 INFO L225 Difference]: With dead ends: 52 [2018-10-03 09:19:50,673 INFO L226 Difference]: Without dead ends: 50 [2018-10-03 09:19:50,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 46 [2018-10-03 09:19:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-03 09:19:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-03 09:19:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-03 09:19:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-03 09:19:50,676 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-03 09:19:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:50,676 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-03 09:19:50,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:19:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-03 09:19:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-03 09:19:50,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:50,677 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-03 09:19:50,677 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:50,677 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:50,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-03 09:19:50,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:50,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:50,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:50,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:50,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:52,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:52,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:52,119 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:19:52,148 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:19:52,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:52,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:52,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:52,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:19:52,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:19:52,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:19:52,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:52,280 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-03 09:19:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:52,371 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-03 09:19:52,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:19:52,371 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-03 09:19:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:52,372 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:19:52,372 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:19:52,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 47 [2018-10-03 09:19:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:19:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:19:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:19:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-03 09:19:52,375 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-03 09:19:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:52,375 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-03 09:19:52,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:19:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-03 09:19:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:19:52,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:52,376 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-03 09:19:52,376 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:52,377 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:52,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-03 09:19:52,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:52,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:52,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:52,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:52,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:53,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:53,337 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:53,343 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:19:53,390 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-03 09:19:53,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:53,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:53,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:53,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:53,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:19:53,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:19:53,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:19:53,541 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:53,541 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-03 09:19:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:53,608 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-03 09:19:53,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:19:53,609 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-03 09:19:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:53,610 INFO L225 Difference]: With dead ends: 54 [2018-10-03 09:19:53,610 INFO L226 Difference]: Without dead ends: 52 [2018-10-03 09:19:53,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 48 [2018-10-03 09:19:53,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-03 09:19:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-03 09:19:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-03 09:19:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-03 09:19:53,612 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-03 09:19:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:53,612 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-03 09:19:53,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:19:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-03 09:19:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-03 09:19:53,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:53,613 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-03 09:19:53,614 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:53,614 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-03 09:19:53,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:53,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:53,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:53,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:53,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:54,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:54,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:54,503 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:19:54,541 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:19:54,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:54,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:54,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:54,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:19:54,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:19:54,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:19:54,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:54,659 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-03 09:19:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:54,723 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-03 09:19:54,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:19:54,723 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-03 09:19:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:54,724 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:19:54,724 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:19:54,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 49 [2018-10-03 09:19:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:19:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:19:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:19:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-03 09:19:54,728 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-03 09:19:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:54,728 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-03 09:19:54,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:19:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-03 09:19:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:19:54,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:54,729 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-03 09:19:54,729 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:54,729 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-03 09:19:54,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:54,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:54,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:56,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:56,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:56,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:56,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:56,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:56,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:19:56,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:19:56,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:19:56,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:56,814 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-03 09:19:56,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:56,878 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-03 09:19:56,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:19:56,878 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-03 09:19:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:56,879 INFO L225 Difference]: With dead ends: 56 [2018-10-03 09:19:56,879 INFO L226 Difference]: Without dead ends: 54 [2018-10-03 09:19:56,879 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 50 [2018-10-03 09:19:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-03 09:19:56,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-03 09:19:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-03 09:19:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-03 09:19:56,882 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-03 09:19:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:56,882 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-03 09:19:56,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:19:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-03 09:19:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 09:19:56,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:56,883 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-03 09:19:56,883 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:56,883 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:56,883 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-03 09:19:56,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:56,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:56,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:56,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:19:56,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:57,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:57,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:57,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:19:57,704 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:19:57,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:57,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:57,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:57,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:19:57,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:19:57,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:19:57,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:57,848 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-03 09:19:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:57,956 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-03 09:19:57,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:19:57,957 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-03 09:19:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:57,957 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:19:57,957 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:19:57,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 51 [2018-10-03 09:19:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:19:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:19:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:19:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-03 09:19:57,960 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-03 09:19:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:57,960 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-03 09:19:57,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:19:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-03 09:19:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:19:57,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:57,961 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-03 09:19:57,961 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:57,961 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-03 09:19:57,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:57,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:57,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:57,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:57,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:19:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:58,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:19:58,728 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:19:58,735 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:19:58,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-03 09:19:58,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:19:58,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:19:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:19:59,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:19:59,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:19:59,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:19:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:19:59,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:19:59,070 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-03 09:19:59,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:19:59,147 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-03 09:19:59,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:19:59,148 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-03 09:19:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:19:59,149 INFO L225 Difference]: With dead ends: 58 [2018-10-03 09:19:59,149 INFO L226 Difference]: Without dead ends: 56 [2018-10-03 09:19:59,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 52 [2018-10-03 09:19:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-03 09:19:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-03 09:19:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-03 09:19:59,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-03 09:19:59,152 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-03 09:19:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:19:59,152 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-03 09:19:59,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:19:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-03 09:19:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-03 09:19:59,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:19:59,153 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-03 09:19:59,153 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:19:59,153 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:19:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-03 09:19:59,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:19:59,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:19:59,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:59,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:19:59,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:19:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:00,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:00,640 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:00,647 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:00,680 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:00,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:00,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:00,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:00,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:20:00,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:20:00,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:20:00,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:00,801 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-03 09:20:00,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:00,893 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-03 09:20:00,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:20:00,894 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-03 09:20:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:00,894 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:20:00,894 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:20:00,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 53 [2018-10-03 09:20:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:20:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:20:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:20:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-03 09:20:00,897 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-03 09:20:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:00,897 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-03 09:20:00,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:20:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-03 09:20:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:20:00,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:00,898 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-03 09:20:00,898 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:00,898 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-03 09:20:00,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:00,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:00,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:00,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:00,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:02,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:02,087 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:02,096 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:02,139 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-03 09:20:02,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:02,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:02,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:02,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:20:02,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:20:02,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:20:02,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:02,300 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-03 09:20:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:02,391 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-03 09:20:02,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:20:02,391 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-03 09:20:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:02,392 INFO L225 Difference]: With dead ends: 60 [2018-10-03 09:20:02,392 INFO L226 Difference]: Without dead ends: 58 [2018-10-03 09:20:02,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 54 [2018-10-03 09:20:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-03 09:20:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-03 09:20:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-03 09:20:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-03 09:20:02,395 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-03 09:20:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:02,396 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-03 09:20:02,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:20:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-03 09:20:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-03 09:20:02,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:02,396 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-03 09:20:02,396 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:02,396 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:02,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-03 09:20:02,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:02,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:02,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:02,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:02,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:03,339 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:03,339 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:03,347 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:03,391 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-03 09:20:03,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:03,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:03,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:03,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:20:03,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:20:03,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:20:03,520 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:03,520 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-03 09:20:03,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:03,593 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-03 09:20:03,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:20:03,593 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-03 09:20:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:03,594 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:20:03,594 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:20:03,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 55 [2018-10-03 09:20:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:20:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:20:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:20:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-03 09:20:03,596 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-03 09:20:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:03,596 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-03 09:20:03,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:20:03,596 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-03 09:20:03,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:20:03,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:03,597 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-03 09:20:03,598 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:03,598 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:03,598 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-03 09:20:03,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:03,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:03,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:03,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:03,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:05,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:05,030 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:05,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:05,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:05,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:05,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:20:05,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:20:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:20:05,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:05,209 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-03 09:20:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:05,330 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-03 09:20:05,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:20:05,330 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-03 09:20:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:05,331 INFO L225 Difference]: With dead ends: 62 [2018-10-03 09:20:05,331 INFO L226 Difference]: Without dead ends: 60 [2018-10-03 09:20:05,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 56 [2018-10-03 09:20:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-03 09:20:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-03 09:20:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-03 09:20:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-03 09:20:05,335 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-03 09:20:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:05,335 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-03 09:20:05,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:20:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-03 09:20:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-03 09:20:05,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:05,335 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-03 09:20:05,336 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:05,336 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:05,336 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-03 09:20:05,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:05,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:05,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:05,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:05,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:06,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:06,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:06,743 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:06,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:06,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:06,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:07,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:07,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:20:07,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:20:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:20:07,046 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:07,046 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-03 09:20:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:07,119 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-03 09:20:07,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:20:07,120 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-03 09:20:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:07,120 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:20:07,120 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:20:07,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 57 [2018-10-03 09:20:07,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:20:07,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:20:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:20:07,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-03 09:20:07,123 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-03 09:20:07,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:07,123 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-03 09:20:07,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:20:07,123 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-03 09:20:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:20:07,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:07,124 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-03 09:20:07,124 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:07,124 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:07,124 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-03 09:20:07,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:07,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:07,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:07,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:07,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:08,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:08,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:08,468 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:08,515 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-03 09:20:08,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:08,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:08,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:08,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:20:08,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:20:08,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:20:08,696 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:08,696 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-03 09:20:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:08,795 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-03 09:20:08,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:20:08,795 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-03 09:20:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:08,796 INFO L225 Difference]: With dead ends: 64 [2018-10-03 09:20:08,796 INFO L226 Difference]: Without dead ends: 62 [2018-10-03 09:20:08,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 58 [2018-10-03 09:20:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-03 09:20:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-03 09:20:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-03 09:20:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-03 09:20:08,799 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-03 09:20:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:08,799 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-03 09:20:08,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:20:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-03 09:20:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-03 09:20:08,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:08,800 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-03 09:20:08,800 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:08,800 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-03 09:20:08,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:08,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:08,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:08,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:08,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:10,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:10,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:10,415 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:10,453 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:10,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:10,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:10,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:10,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:20:10,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:20:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:20:10,601 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:10,601 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-03 09:20:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:10,694 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-03 09:20:10,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:20:10,695 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-03 09:20:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:10,695 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:20:10,696 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:20:10,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 59 [2018-10-03 09:20:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:20:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:20:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:20:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-03 09:20:10,698 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-03 09:20:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:10,698 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-03 09:20:10,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:20:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-03 09:20:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:20:10,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:10,699 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-03 09:20:10,699 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:10,699 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:10,699 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-03 09:20:10,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:10,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:10,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:10,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:10,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:12,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:12,586 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:12,594 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:12,641 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-03 09:20:12,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:12,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:12,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:12,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:20:12,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:20:12,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:20:12,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:12,846 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-03 09:20:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:12,949 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-03 09:20:12,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:20:12,949 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-03 09:20:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:12,950 INFO L225 Difference]: With dead ends: 66 [2018-10-03 09:20:12,950 INFO L226 Difference]: Without dead ends: 64 [2018-10-03 09:20:12,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 60 [2018-10-03 09:20:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-03 09:20:12,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-03 09:20:12,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-03 09:20:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-03 09:20:12,953 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-03 09:20:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:12,953 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-03 09:20:12,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:20:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-03 09:20:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 09:20:12,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:12,954 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-03 09:20:12,954 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:12,954 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-03 09:20:12,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:12,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:12,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:12,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:12,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:14,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:14,700 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:14,709 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:14,760 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:20:14,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:14,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:14,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:14,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:20:14,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:20:14,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:20:14,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:14,912 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-03 09:20:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:15,014 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-03 09:20:15,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:20:15,015 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-03 09:20:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:15,016 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:20:15,016 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:20:15,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 61 [2018-10-03 09:20:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:20:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:20:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:20:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-03 09:20:15,019 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-03 09:20:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:15,019 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-03 09:20:15,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:20:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-03 09:20:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:20:15,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:15,019 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-03 09:20:15,019 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:15,020 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-03 09:20:15,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:15,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:15,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:15,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:15,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:16,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:16,446 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:16,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:16,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:16,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:16,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:20:16,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:20:16,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:20:16,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:16,636 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-03 09:20:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:16,796 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-03 09:20:16,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:20:16,796 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-03 09:20:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:16,797 INFO L225 Difference]: With dead ends: 68 [2018-10-03 09:20:16,797 INFO L226 Difference]: Without dead ends: 66 [2018-10-03 09:20:16,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 62 [2018-10-03 09:20:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-03 09:20:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-03 09:20:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-03 09:20:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-03 09:20:16,799 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-03 09:20:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:16,800 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-03 09:20:16,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:20:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-03 09:20:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-03 09:20:16,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:16,800 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-03 09:20:16,801 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:16,801 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:16,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-03 09:20:16,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:16,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:16,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:16,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:16,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:18,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:18,971 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:18,978 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:19,013 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:19,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:19,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:19,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:19,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:20:19,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:20:19,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:20:19,168 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:19,168 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-03 09:20:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:19,321 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-03 09:20:19,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:20:19,322 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-03 09:20:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:19,322 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:20:19,322 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:20:19,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 63 [2018-10-03 09:20:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:20:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:20:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:20:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-03 09:20:19,324 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-03 09:20:19,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:19,325 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-03 09:20:19,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:20:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-03 09:20:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:20:19,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:19,325 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-03 09:20:19,325 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:19,326 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:19,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-03 09:20:19,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:19,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:19,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:19,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:19,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:21,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:21,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:21,042 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:21,139 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-03 09:20:21,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:21,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:21,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:21,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:20:21,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:20:21,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:20:21,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:21,292 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-03 09:20:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:21,456 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-03 09:20:21,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:20:21,457 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-03 09:20:21,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:21,457 INFO L225 Difference]: With dead ends: 70 [2018-10-03 09:20:21,458 INFO L226 Difference]: Without dead ends: 68 [2018-10-03 09:20:21,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime 64 [2018-10-03 09:20:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-03 09:20:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-03 09:20:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-03 09:20:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-03 09:20:21,460 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-03 09:20:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:21,461 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-03 09:20:21,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:20:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-03 09:20:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-03 09:20:21,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:21,462 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-03 09:20:21,462 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:21,462 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-03 09:20:21,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:21,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:21,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:21,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:21,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:23,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:23,408 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:23,425 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:23,483 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:23,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:23,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:23,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:23,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:20:23,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:20:23,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:20:23,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:23,630 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-03 09:20:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:23,752 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-03 09:20:23,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:20:23,753 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-03 09:20:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:23,754 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:20:23,754 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:20:23,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 65 [2018-10-03 09:20:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:20:23,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:20:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:20:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-03 09:20:23,756 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-03 09:20:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:23,756 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-03 09:20:23,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:20:23,756 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-03 09:20:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:20:23,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:23,757 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-03 09:20:23,757 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:23,757 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:23,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-03 09:20:23,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:23,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:23,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:23,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:23,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:24,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:24,902 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:24,909 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:24,963 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-03 09:20:24,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:24,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:25,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:25,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:20:25,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:20:25,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:20:25,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:25,223 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-03 09:20:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:25,440 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-03 09:20:25,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:20:25,441 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-03 09:20:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:25,442 INFO L225 Difference]: With dead ends: 72 [2018-10-03 09:20:25,442 INFO L226 Difference]: Without dead ends: 70 [2018-10-03 09:20:25,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 66 [2018-10-03 09:20:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-03 09:20:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-03 09:20:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-03 09:20:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-03 09:20:25,444 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-03 09:20:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:25,444 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-03 09:20:25,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:20:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-03 09:20:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-03 09:20:25,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:25,445 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-03 09:20:25,445 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:25,445 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:25,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-03 09:20:25,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:25,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:25,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:25,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:27,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:27,840 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:27,848 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:27,903 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-03 09:20:27,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:27,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:29,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:29,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:20:29,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:20:29,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:20:29,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:29,313 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-03 09:20:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:29,439 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-03 09:20:29,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:20:29,439 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-03 09:20:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:29,440 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:20:29,440 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:20:29,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 2.2s impTime 67 [2018-10-03 09:20:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:20:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:20:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:20:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-03 09:20:29,443 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-03 09:20:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:29,444 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-03 09:20:29,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:20:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-03 09:20:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:20:29,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:29,445 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-03 09:20:29,445 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:29,445 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:29,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-03 09:20:29,445 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:29,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:29,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:29,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:29,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:31,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:31,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:31,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:31,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:31,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:31,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:20:31,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:20:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:20:31,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:31,642 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-03 09:20:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:31,771 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-03 09:20:31,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:20:31,771 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-03 09:20:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:31,772 INFO L225 Difference]: With dead ends: 74 [2018-10-03 09:20:31,772 INFO L226 Difference]: Without dead ends: 72 [2018-10-03 09:20:31,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 68 [2018-10-03 09:20:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-03 09:20:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-03 09:20:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-03 09:20:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-03 09:20:31,776 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-03 09:20:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:31,776 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-03 09:20:31,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:20:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-03 09:20:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-03 09:20:31,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:31,777 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-03 09:20:31,777 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:31,777 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:31,777 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-03 09:20:31,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:31,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:31,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:31,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:31,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:33,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:33,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:33,730 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:33,770 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:33,770 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:33,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:33,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:33,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:20:33,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:20:33,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:20:33,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:33,930 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-03 09:20:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:34,054 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-03 09:20:34,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:20:34,055 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-03 09:20:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:34,056 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:20:34,056 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:20:34,056 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 69 [2018-10-03 09:20:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:20:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:20:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:20:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-03 09:20:34,058 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-03 09:20:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:34,058 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-03 09:20:34,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:20:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-03 09:20:34,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:20:34,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:34,059 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-03 09:20:34,059 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:34,059 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:34,060 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-03 09:20:34,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:34,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:34,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:34,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:34,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:36,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:36,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:36,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:36,175 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-03 09:20:36,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:36,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:36,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:36,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:20:36,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:20:36,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:20:36,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:36,596 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-03 09:20:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:36,781 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-03 09:20:36,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:20:36,782 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-03 09:20:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:36,782 INFO L225 Difference]: With dead ends: 76 [2018-10-03 09:20:36,783 INFO L226 Difference]: Without dead ends: 74 [2018-10-03 09:20:36,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 70 [2018-10-03 09:20:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-03 09:20:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-03 09:20:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-03 09:20:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-03 09:20:36,786 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-03 09:20:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:36,786 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-03 09:20:36,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:20:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-03 09:20:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 09:20:36,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:36,787 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-03 09:20:36,787 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:36,787 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:36,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-03 09:20:36,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:36,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:36,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:36,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:36,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:39,417 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:39,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:39,425 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:39,485 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:39,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:39,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:39,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:39,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:20:39,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:20:39,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:20:39,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:39,664 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-03 09:20:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:39,914 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-03 09:20:39,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:20:39,915 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-03 09:20:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:39,915 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:20:39,915 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:20:39,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 71 [2018-10-03 09:20:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:20:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:20:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:20:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-03 09:20:39,918 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-03 09:20:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:39,918 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-03 09:20:39,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:20:39,919 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-03 09:20:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:20:39,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:39,920 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-03 09:20:39,920 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:39,920 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-03 09:20:39,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:39,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:39,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:39,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:39,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:41,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:41,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:41,236 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:41,305 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-03 09:20:41,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:41,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:41,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:41,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:20:41,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:20:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:20:41,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:41,683 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-03 09:20:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:41,785 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-03 09:20:41,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:20:41,785 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-03 09:20:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:41,786 INFO L225 Difference]: With dead ends: 78 [2018-10-03 09:20:41,787 INFO L226 Difference]: Without dead ends: 76 [2018-10-03 09:20:41,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 72 [2018-10-03 09:20:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-03 09:20:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-03 09:20:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-03 09:20:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-03 09:20:41,790 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-03 09:20:41,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:41,790 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-03 09:20:41,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:20:41,790 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-03 09:20:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-03 09:20:41,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:41,791 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-03 09:20:41,791 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:41,791 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:41,791 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-03 09:20:41,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:41,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:41,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:41,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:41,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:44,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:44,001 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:44,008 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:20:44,105 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:20:44,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:44,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:44,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:44,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:20:44,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:20:44,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:20:44,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:44,323 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-03 09:20:44,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:44,435 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-03 09:20:44,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:20:44,435 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-03 09:20:44,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:44,436 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:20:44,436 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:20:44,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 73 [2018-10-03 09:20:44,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:20:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:20:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:20:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-03 09:20:44,440 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-03 09:20:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:44,440 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-03 09:20:44,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:20:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-03 09:20:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:20:44,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:44,441 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-03 09:20:44,441 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:44,441 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-03 09:20:44,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:44,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:44,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:44,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:44,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:46,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:46,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:46,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:46,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:47,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:47,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:20:47,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:20:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:20:47,080 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:47,080 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-03 09:20:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:47,229 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-03 09:20:47,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:20:47,230 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-03 09:20:47,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:47,230 INFO L225 Difference]: With dead ends: 80 [2018-10-03 09:20:47,231 INFO L226 Difference]: Without dead ends: 78 [2018-10-03 09:20:47,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 74 [2018-10-03 09:20:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-03 09:20:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-03 09:20:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-03 09:20:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-03 09:20:47,233 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-03 09:20:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:47,233 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-03 09:20:47,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:20:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-03 09:20:47,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-03 09:20:47,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:47,234 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-03 09:20:47,234 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:47,234 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:47,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-03 09:20:47,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:47,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:47,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:47,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:20:47,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:49,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:49,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:49,729 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:20:49,770 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:20:49,770 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:49,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:49,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:49,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:20:49,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:20:49,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:20:49,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:49,938 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-03 09:20:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:50,099 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-03 09:20:50,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:20:50,099 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-03 09:20:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:50,100 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:20:50,100 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:20:50,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 75 [2018-10-03 09:20:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:20:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:20:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:20:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-03 09:20:50,104 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-03 09:20:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:50,105 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-03 09:20:50,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:20:50,105 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-03 09:20:50,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:20:50,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:50,105 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-03 09:20:50,106 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:50,106 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-03 09:20:50,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:50,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:50,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:50,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:50,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:52,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:52,399 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:52,407 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:20:52,480 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-03 09:20:52,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:52,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:52,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:52,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:20:52,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:20:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:20:52,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:52,762 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-03 09:20:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:52,991 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-03 09:20:52,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:20:52,991 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-03 09:20:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:52,992 INFO L225 Difference]: With dead ends: 82 [2018-10-03 09:20:52,992 INFO L226 Difference]: Without dead ends: 80 [2018-10-03 09:20:52,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 76 [2018-10-03 09:20:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-03 09:20:52,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-03 09:20:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-03 09:20:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-03 09:20:52,995 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-03 09:20:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:52,996 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-03 09:20:52,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:20:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-03 09:20:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-03 09:20:52,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:52,996 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-03 09:20:52,997 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:52,997 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-03 09:20:52,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:52,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:52,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:55,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:55,298 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:55,306 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:20:55,358 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:20:55,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:55,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:55,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:55,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:20:55,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:20:55,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:20:55,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:55,529 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-03 09:20:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:20:57,064 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-03 09:20:57,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:20:57,064 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-03 09:20:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:20:57,065 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:20:57,065 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:20:57,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 77 [2018-10-03 09:20:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:20:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:20:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:20:57,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-03 09:20:57,068 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-03 09:20:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:20:57,068 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-03 09:20:57,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:20:57,069 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-03 09:20:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:20:57,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:20:57,069 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-03 09:20:57,070 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:20:57,070 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:20:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-03 09:20:57,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:20:57,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:20:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:57,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:20:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:20:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:20:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:59,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:20:59,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:20:59,591 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:20:59,658 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-03 09:20:59,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:20:59,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:20:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:20:59,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:20:59,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:20:59,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:20:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:20:59,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:20:59,999 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-03 09:21:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:00,146 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-03 09:21:00,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:21:00,146 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-03 09:21:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:00,147 INFO L225 Difference]: With dead ends: 84 [2018-10-03 09:21:00,147 INFO L226 Difference]: Without dead ends: 82 [2018-10-03 09:21:00,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime 78 [2018-10-03 09:21:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-03 09:21:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-03 09:21:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-03 09:21:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-03 09:21:00,149 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-03 09:21:00,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:00,150 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-03 09:21:00,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:21:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-03 09:21:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-03 09:21:00,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:00,150 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-03 09:21:00,150 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:00,150 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:00,151 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-03 09:21:00,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:00,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:00,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:00,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:00,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:01,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:01,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:01,827 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:01,900 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-03 09:21:01,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:01,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:02,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:02,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:21:02,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:21:02,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:21:02,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:02,083 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-03 09:21:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:02,227 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-03 09:21:02,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:21:02,228 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-03 09:21:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:02,229 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:21:02,229 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:21:02,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 79 [2018-10-03 09:21:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:21:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:21:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:21:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-03 09:21:02,233 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-03 09:21:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:02,233 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-03 09:21:02,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:21:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-03 09:21:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:21:02,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:02,234 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-03 09:21:02,234 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:02,234 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:02,234 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-03 09:21:02,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:02,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:02,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:02,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:02,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:05,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:05,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:05,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:05,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:05,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:05,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:21:05,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:21:05,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:21:05,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:05,986 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-03 09:21:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:06,181 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-03 09:21:06,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:21:06,182 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-03 09:21:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:06,182 INFO L225 Difference]: With dead ends: 86 [2018-10-03 09:21:06,182 INFO L226 Difference]: Without dead ends: 84 [2018-10-03 09:21:06,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.1s impTime 80 [2018-10-03 09:21:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-03 09:21:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-03 09:21:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-03 09:21:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-03 09:21:06,184 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-03 09:21:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:06,185 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-03 09:21:06,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:21:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-03 09:21:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 09:21:06,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:06,185 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-03 09:21:06,185 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:06,186 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:06,186 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-03 09:21:06,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:06,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:06,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:06,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:06,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:08,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:08,745 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:08,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:08,801 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:08,802 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:08,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:10,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:10,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:21:10,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:21:10,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:21:10,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:10,190 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-03 09:21:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:10,353 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-03 09:21:10,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:21:10,353 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-03 09:21:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:10,354 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:21:10,354 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:21:10,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 2.3s impTime 81 [2018-10-03 09:21:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:21:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:21:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:21:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-03 09:21:10,357 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-03 09:21:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:10,357 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-03 09:21:10,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:21:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-03 09:21:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:21:10,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:10,358 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-03 09:21:10,358 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:10,358 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:10,358 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-03 09:21:10,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:10,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:10,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:10,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:10,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:13,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:13,376 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:13,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:13,458 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-03 09:21:13,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:13,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:13,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:13,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:21:13,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:21:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:21:13,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:13,667 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-03 09:21:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:13,858 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-03 09:21:13,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:21:13,859 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-03 09:21:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:13,859 INFO L225 Difference]: With dead ends: 88 [2018-10-03 09:21:13,859 INFO L226 Difference]: Without dead ends: 86 [2018-10-03 09:21:13,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 82 [2018-10-03 09:21:13,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-03 09:21:13,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-03 09:21:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-03 09:21:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-03 09:21:13,863 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-03 09:21:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:13,863 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-03 09:21:13,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:21:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-03 09:21:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-03 09:21:13,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:13,863 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-03 09:21:13,864 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:13,864 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:13,864 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-03 09:21:13,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:13,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:13,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:13,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:13,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:16,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:16,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:16,212 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:16,267 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:16,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:16,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:16,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:16,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:21:16,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:21:16,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:21:16,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:16,717 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-03 09:21:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:16,879 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-03 09:21:16,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:21:16,880 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-03 09:21:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:16,880 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:21:16,880 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:21:16,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 83 [2018-10-03 09:21:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:21:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:21:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:21:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-03 09:21:16,883 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-03 09:21:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:16,884 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-03 09:21:16,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:21:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-03 09:21:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:21:16,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:16,884 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-03 09:21:16,885 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:16,885 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:16,885 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-03 09:21:16,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:16,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:16,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:16,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:16,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:20,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:20,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:20,442 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:20,519 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-03 09:21:20,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:20,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:20,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:20,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:21:20,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:21:20,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:21:20,701 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:20,701 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-03 09:21:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:20,917 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-03 09:21:20,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:21:20,918 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-03 09:21:20,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:20,918 INFO L225 Difference]: With dead ends: 90 [2018-10-03 09:21:20,919 INFO L226 Difference]: Without dead ends: 88 [2018-10-03 09:21:20,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.3s impTime 84 [2018-10-03 09:21:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-03 09:21:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-03 09:21:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-03 09:21:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-03 09:21:20,920 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-03 09:21:20,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:20,921 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-03 09:21:20,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:21:20,921 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-03 09:21:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-03 09:21:20,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:20,921 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-03 09:21:20,921 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:20,922 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-03 09:21:20,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:20,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:20,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:20,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:20,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:22,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:22,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:22,932 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:23,010 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:21:23,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:23,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:23,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:23,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:21:23,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:21:23,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:21:23,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:23,190 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-03 09:21:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:23,605 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-03 09:21:23,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:21:23,605 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-03 09:21:23,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:23,606 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:21:23,606 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:21:23,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 85 [2018-10-03 09:21:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:21:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:21:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:21:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-03 09:21:23,609 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-03 09:21:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:23,609 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-03 09:21:23,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:21:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-03 09:21:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:21:23,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:23,610 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-03 09:21:23,611 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:23,611 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-03 09:21:23,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:23,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:23,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:23,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:25,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:25,599 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:25,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:25,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:25,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:25,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:21:25,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:21:25,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:21:25,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:25,837 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-03 09:21:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:25,992 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-03 09:21:25,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:21:25,992 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-03 09:21:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:25,993 INFO L225 Difference]: With dead ends: 92 [2018-10-03 09:21:25,993 INFO L226 Difference]: Without dead ends: 90 [2018-10-03 09:21:25,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 86 [2018-10-03 09:21:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-03 09:21:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-03 09:21:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-03 09:21:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-03 09:21:25,996 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-03 09:21:25,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:25,996 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-03 09:21:25,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:21:25,997 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-03 09:21:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-03 09:21:25,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:25,997 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-03 09:21:25,997 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:25,998 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:25,998 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-03 09:21:25,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:25,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:25,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:25,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:25,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:28,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:28,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:28,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:28,313 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:28,313 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:28,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:28,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:28,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:21:28,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:21:28,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:21:28,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:28,627 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-03 09:21:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:28,808 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-03 09:21:28,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:21:28,808 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-03 09:21:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:28,809 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:21:28,809 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:21:28,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 87 [2018-10-03 09:21:28,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:21:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:21:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:21:28,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-03 09:21:28,812 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-03 09:21:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:28,812 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-03 09:21:28,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:21:28,813 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-03 09:21:28,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:21:28,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:28,813 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-03 09:21:28,813 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:28,813 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:28,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-03 09:21:28,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:28,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:28,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:28,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:28,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:31,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:31,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:31,472 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:31,555 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-03 09:21:31,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:31,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:31,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:31,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:21:31,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:21:31,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:21:31,732 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:31,732 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-03 09:21:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:31,893 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-03 09:21:31,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:21:31,893 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-03 09:21:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:31,894 INFO L225 Difference]: With dead ends: 94 [2018-10-03 09:21:31,894 INFO L226 Difference]: Without dead ends: 92 [2018-10-03 09:21:31,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 88 [2018-10-03 09:21:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-03 09:21:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-03 09:21:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-03 09:21:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-03 09:21:31,896 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-03 09:21:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:31,896 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-03 09:21:31,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:21:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-03 09:21:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-03 09:21:31,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:31,897 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-03 09:21:31,897 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:31,897 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:31,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-03 09:21:31,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:31,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:31,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:31,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:31,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:34,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:34,625 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:34,633 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:34,685 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:34,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:34,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:34,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:34,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:21:34,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:21:34,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:21:34,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:34,865 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-03 09:21:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:35,041 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-03 09:21:35,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:21:35,041 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-03 09:21:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:35,041 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:21:35,041 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:21:35,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 89 [2018-10-03 09:21:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:21:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:21:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:21:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-03 09:21:35,044 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-03 09:21:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:35,045 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-03 09:21:35,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:21:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-03 09:21:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:21:35,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:35,045 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-03 09:21:35,045 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:35,046 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:35,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-03 09:21:35,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:35,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:35,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:35,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:35,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:37,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:37,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:37,248 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:37,390 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-03 09:21:37,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:37,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:37,666 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:37,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:21:37,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:21:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:21:37,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:37,667 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-03 09:21:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:37,818 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-03 09:21:37,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:21:37,818 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-03 09:21:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:37,819 INFO L225 Difference]: With dead ends: 96 [2018-10-03 09:21:37,819 INFO L226 Difference]: Without dead ends: 94 [2018-10-03 09:21:37,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 90 [2018-10-03 09:21:37,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-03 09:21:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-03 09:21:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-03 09:21:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-03 09:21:37,822 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-03 09:21:37,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:37,822 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-03 09:21:37,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:21:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-03 09:21:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 09:21:37,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:37,823 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-03 09:21:37,823 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:37,823 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-03 09:21:37,824 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:37,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:37,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:37,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:37,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:39,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:39,938 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:39,946 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:21:40,029 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-03 09:21:40,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:40,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:40,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:40,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:21:40,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:21:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:21:40,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:40,216 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-03 09:21:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:40,367 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-03 09:21:40,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:21:40,368 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-03 09:21:40,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:40,368 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:21:40,368 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:21:40,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 91 [2018-10-03 09:21:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:21:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:21:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:21:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-03 09:21:40,371 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-03 09:21:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:40,372 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-03 09:21:40,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:21:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-03 09:21:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:21:40,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:40,372 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-03 09:21:40,373 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:40,373 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:40,373 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-03 09:21:40,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:40,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:40,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:40,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:40,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:43,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:43,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:43,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:43,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:43,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:43,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:21:43,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:21:43,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:21:43,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:43,457 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-03 09:21:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:43,702 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-03 09:21:43,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:21:43,702 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-03 09:21:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:43,703 INFO L225 Difference]: With dead ends: 98 [2018-10-03 09:21:43,703 INFO L226 Difference]: Without dead ends: 96 [2018-10-03 09:21:43,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 92 [2018-10-03 09:21:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-03 09:21:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-03 09:21:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-03 09:21:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-03 09:21:43,705 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-03 09:21:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:43,705 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-03 09:21:43,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:21:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-03 09:21:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-03 09:21:43,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:43,706 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-03 09:21:43,706 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:43,706 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:43,706 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-03 09:21:43,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:43,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:43,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:43,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:21:43,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:47,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:47,229 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:47,238 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:21:47,288 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:21:47,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:47,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:47,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:47,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:21:47,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:21:47,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:21:47,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:47,563 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-03 09:21:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:47,795 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-03 09:21:47,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:21:47,795 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-03 09:21:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:47,796 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:21:47,796 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:21:47,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.2s impTime 93 [2018-10-03 09:21:47,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:21:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:21:47,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:21:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-03 09:21:47,798 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-03 09:21:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:47,798 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-03 09:21:47,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:21:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-03 09:21:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:21:47,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:47,799 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-03 09:21:47,799 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:47,799 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:47,799 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-03 09:21:47,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:47,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:47,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:47,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:47,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:50,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:50,006 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:50,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:21:50,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-03 09:21:50,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:50,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:50,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:50,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:21:50,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:21:50,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:21:50,344 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:50,344 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-03 09:21:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:50,516 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-03 09:21:50,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:21:50,517 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-03 09:21:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:50,517 INFO L225 Difference]: With dead ends: 100 [2018-10-03 09:21:50,517 INFO L226 Difference]: Without dead ends: 98 [2018-10-03 09:21:50,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 94 [2018-10-03 09:21:50,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-03 09:21:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-03 09:21:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-03 09:21:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-03 09:21:50,519 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-03 09:21:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:50,519 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-03 09:21:50,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:21:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-03 09:21:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-03 09:21:50,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:50,520 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-03 09:21:50,520 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:50,520 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:50,520 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-03 09:21:50,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:50,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:50,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:50,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:50,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:54,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:54,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:54,569 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:21:54,629 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:21:54,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:54,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:54,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:54,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:21:54,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:21:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:21:54,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:54,823 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-03 09:21:55,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:55,101 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-03 09:21:55,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:21:55,101 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-03 09:21:55,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:55,102 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:21:55,102 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:21:55,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.8s impTime 95 [2018-10-03 09:21:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:21:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:21:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:21:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-03 09:21:55,105 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-03 09:21:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:55,105 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-03 09:21:55,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:21:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-03 09:21:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:21:55,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:55,106 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-03 09:21:55,106 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:55,106 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-03 09:21:55,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:55,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:55,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:55,107 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:55,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:21:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:57,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:21:57,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:21:57,190 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:21:57,279 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-03 09:21:57,279 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:21:57,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:21:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:21:57,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:21:57,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:21:57,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:21:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:21:57,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:21:57,477 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-03 09:21:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:21:57,663 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-03 09:21:57,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:21:57,663 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-03 09:21:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:21:57,663 INFO L225 Difference]: With dead ends: 102 [2018-10-03 09:21:57,663 INFO L226 Difference]: Without dead ends: 100 [2018-10-03 09:21:57,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 96 [2018-10-03 09:21:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-03 09:21:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-03 09:21:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-03 09:21:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-03 09:21:57,666 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-03 09:21:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:21:57,666 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-03 09:21:57,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:21:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-03 09:21:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-03 09:21:57,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:21:57,667 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-03 09:21:57,667 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:21:57,667 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:21:57,667 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-03 09:21:57,667 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:21:57,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:21:57,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:57,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:21:57,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:21:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:00,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:00,870 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:00,878 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:22:00,992 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:22:00,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:00,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:01,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:01,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:22:01,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:22:01,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:22:01,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:01,193 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-03 09:22:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:01,403 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-03 09:22:01,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:22:01,404 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-03 09:22:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:01,404 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:22:01,404 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:22:01,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 97 [2018-10-03 09:22:01,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:22:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:22:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:22:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-03 09:22:01,407 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-03 09:22:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:01,407 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-03 09:22:01,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:22:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-03 09:22:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:22:01,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:01,408 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-03 09:22:01,409 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:01,409 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:01,409 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-03 09:22:01,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:01,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:01,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:01,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:01,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:05,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:05,735 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:05,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:05,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:05,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:05,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:22:05,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:22:05,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:22:05,994 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:05,994 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-03 09:22:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:06,290 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-03 09:22:06,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:22:06,290 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-03 09:22:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:06,291 INFO L225 Difference]: With dead ends: 104 [2018-10-03 09:22:06,291 INFO L226 Difference]: Without dead ends: 102 [2018-10-03 09:22:06,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time 4.1s impTime 98 [2018-10-03 09:22:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-03 09:22:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-03 09:22:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-03 09:22:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-03 09:22:06,293 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-03 09:22:06,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:06,293 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-03 09:22:06,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:22:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-03 09:22:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-03 09:22:06,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:06,294 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-03 09:22:06,294 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:06,294 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-03 09:22:06,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:06,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:06,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:09,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:09,234 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:09,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:09,296 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:09,297 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:09,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:09,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:09,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:22:09,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:22:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:22:09,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:09,612 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-03 09:22:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:09,876 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-03 09:22:09,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:22:09,876 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-03 09:22:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:09,877 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:22:09,877 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:22:09,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime 99 [2018-10-03 09:22:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:22:09,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:22:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:22:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-03 09:22:09,881 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-03 09:22:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:09,881 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-03 09:22:09,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:22:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-03 09:22:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:22:09,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:09,882 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-03 09:22:09,882 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:09,882 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-03 09:22:09,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:09,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:09,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:09,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:09,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:12,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:12,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:12,398 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:22:12,496 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-03 09:22:12,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:12,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:12,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:12,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:22:12,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:22:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:22:12,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:12,700 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-03 09:22:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:12,955 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-03 09:22:12,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:22:12,955 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-03 09:22:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:12,956 INFO L225 Difference]: With dead ends: 106 [2018-10-03 09:22:12,956 INFO L226 Difference]: Without dead ends: 104 [2018-10-03 09:22:12,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 100 [2018-10-03 09:22:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-03 09:22:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-03 09:22:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-03 09:22:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-03 09:22:12,959 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-03 09:22:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:12,959 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-03 09:22:12,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:22:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-03 09:22:12,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 09:22:12,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:12,960 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-03 09:22:12,960 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:12,961 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:12,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-03 09:22:12,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:12,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:12,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:12,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:12,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:15,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:15,493 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:15,501 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:22:15,565 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:22:15,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:15,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:15,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:15,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:22:15,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:22:15,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:22:15,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:15,775 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-03 09:22:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:16,022 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-03 09:22:16,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:22:16,022 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-03 09:22:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:16,023 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:22:16,023 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:22:16,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 101 [2018-10-03 09:22:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:22:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:22:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:22:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-03 09:22:16,026 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-03 09:22:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:16,026 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-03 09:22:16,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:22:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-03 09:22:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:22:16,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:16,027 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-03 09:22:16,027 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:16,028 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-03 09:22:16,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:16,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:16,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:16,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:16,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:18,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:18,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:18,705 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:22:18,809 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-03 09:22:18,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:18,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:19,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:19,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:22:19,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:22:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:22:19,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:19,032 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-03 09:22:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:19,283 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-03 09:22:19,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:22:19,284 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-03 09:22:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:19,285 INFO L225 Difference]: With dead ends: 108 [2018-10-03 09:22:19,285 INFO L226 Difference]: Without dead ends: 106 [2018-10-03 09:22:19,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 102 [2018-10-03 09:22:19,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-03 09:22:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-03 09:22:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-03 09:22:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-03 09:22:19,288 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-03 09:22:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:19,288 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-03 09:22:19,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:22:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-03 09:22:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-03 09:22:19,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:19,289 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-03 09:22:19,289 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:19,290 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-03 09:22:19,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:19,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:19,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:19,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:19,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:22,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:22,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:22,575 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:22:22,670 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-03 09:22:22,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:22,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:22,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:22,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:22:22,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:22:22,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:22:22,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:22,878 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-03 09:22:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:23,162 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-03 09:22:23,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:22:23,162 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-03 09:22:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:23,163 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:22:23,163 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:22:23,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime 103 [2018-10-03 09:22:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:22:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:22:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:22:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-03 09:22:23,165 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-03 09:22:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:23,165 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-03 09:22:23,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:22:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-03 09:22:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:22:23,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:23,166 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-03 09:22:23,166 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:23,167 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-03 09:22:23,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:23,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:23,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:23,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:23,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:27,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:27,753 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:27,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:27,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:28,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:28,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:22:28,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:22:28,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:22:28,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:28,099 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-03 09:22:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:28,422 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-03 09:22:28,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:22:28,423 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-03 09:22:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:28,423 INFO L225 Difference]: With dead ends: 110 [2018-10-03 09:22:28,423 INFO L226 Difference]: Without dead ends: 108 [2018-10-03 09:22:28,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.2s impTime 104 [2018-10-03 09:22:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-03 09:22:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-03 09:22:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-03 09:22:28,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-03 09:22:28,427 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-03 09:22:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:28,427 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-03 09:22:28,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:22:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-03 09:22:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-03 09:22:28,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:28,427 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-03 09:22:28,428 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:28,428 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-03 09:22:28,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:28,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:28,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:28,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:32,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:32,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:32,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:32,261 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:32,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:32,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:32,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:32,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:22:32,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:22:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:22:32,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:32,570 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-03 09:22:32,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:32,834 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-03 09:22:32,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:22:32,834 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-03 09:22:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:32,835 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:22:32,835 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:22:32,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.4s impTime 105 [2018-10-03 09:22:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:22:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:22:32,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:22:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-03 09:22:32,839 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-03 09:22:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:32,839 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-03 09:22:32,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:22:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-03 09:22:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:22:32,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:32,840 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-03 09:22:32,840 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:32,841 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-03 09:22:32,841 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:32,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:32,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:32,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:32,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:35,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:35,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:35,425 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:22:35,532 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-03 09:22:35,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:35,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:35,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:35,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:22:35,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:22:35,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:22:35,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:35,748 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-03 09:22:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:35,952 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-03 09:22:35,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:22:35,953 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-03 09:22:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:35,953 INFO L225 Difference]: With dead ends: 112 [2018-10-03 09:22:35,953 INFO L226 Difference]: Without dead ends: 110 [2018-10-03 09:22:35,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 106 [2018-10-03 09:22:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-03 09:22:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-03 09:22:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-03 09:22:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-03 09:22:35,957 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-03 09:22:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:35,957 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-03 09:22:35,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:22:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-03 09:22:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-03 09:22:35,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:35,958 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-03 09:22:35,958 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:35,958 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:35,958 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-03 09:22:35,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:35,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:35,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:35,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:35,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:40,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:40,899 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:40,907 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:22:40,973 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:22:40,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:40,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:41,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:41,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:22:41,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:22:41,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:22:41,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:41,192 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-03 09:22:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:41,537 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-03 09:22:41,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:22:41,538 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-03 09:22:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:41,538 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:22:41,538 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:22:41,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time 4.6s impTime 107 [2018-10-03 09:22:41,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:22:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:22:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:22:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-03 09:22:41,541 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-03 09:22:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:41,542 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-03 09:22:41,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:22:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-03 09:22:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:22:41,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:41,542 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-03 09:22:41,542 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:41,543 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-10-03 09:22:41,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:41,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:41,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:41,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:41,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:44,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:44,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:44,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:44,931 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:22:45,045 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-03 09:22:45,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:45,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:45,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:45,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:22:45,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:22:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:22:45,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:45,320 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-03 09:22:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:45,610 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-03 09:22:45,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:22:45,610 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-03 09:22:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:45,611 INFO L225 Difference]: With dead ends: 114 [2018-10-03 09:22:45,611 INFO L226 Difference]: Without dead ends: 112 [2018-10-03 09:22:45,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.1s impTime 108 [2018-10-03 09:22:45,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-03 09:22:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-03 09:22:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-03 09:22:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-03 09:22:45,613 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-03 09:22:45,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:45,613 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-03 09:22:45,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:22:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-03 09:22:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-03 09:22:45,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:45,614 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-03 09:22:45,614 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:45,614 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:45,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-10-03 09:22:45,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:45,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:45,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:45,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:45,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:50,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:50,782 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:50,789 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:22:50,894 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:22:50,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:50,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:51,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:51,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:22:51,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:22:51,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:22:51,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:51,115 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-03 09:22:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:51,479 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-03 09:22:51,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:22:51,479 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-03 09:22:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:51,480 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:22:51,480 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:22:51,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time 4.8s impTime 109 [2018-10-03 09:22:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:22:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:22:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:22:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-03 09:22:51,482 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-03 09:22:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:51,482 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-03 09:22:51,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:22:51,483 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-03 09:22:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:22:51,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:51,483 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-03 09:22:51,483 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:51,483 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:51,484 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-10-03 09:22:51,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:51,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:51,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:51,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:51,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:54,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:54,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:54,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:54,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:54,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:54,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:22:54,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:22:54,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:22:54,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:54,974 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-03 09:22:55,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:55,280 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-03 09:22:55,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:22:55,281 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-03 09:22:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:55,281 INFO L225 Difference]: With dead ends: 116 [2018-10-03 09:22:55,281 INFO L226 Difference]: Without dead ends: 114 [2018-10-03 09:22:55,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.9s impTime 110 [2018-10-03 09:22:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-03 09:22:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-03 09:22:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-03 09:22:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-03 09:22:55,284 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-03 09:22:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:55,285 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-03 09:22:55,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:22:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-03 09:22:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-03 09:22:55,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:55,286 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-03 09:22:55,286 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:55,286 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:55,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-10-03 09:22:55,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:55,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:55,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:55,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:22:55,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:22:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:59,025 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:22:59,025 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:22:59,032 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:22:59,093 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:22:59,093 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:22:59,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:22:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:22:59,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:22:59,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-03 09:22:59,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-03 09:22:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-03 09:22:59,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:22:59,316 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-10-03 09:22:59,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:22:59,643 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-03 09:22:59,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-03 09:22:59,643 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-10-03 09:22:59,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:22:59,643 INFO L225 Difference]: With dead ends: 117 [2018-10-03 09:22:59,644 INFO L226 Difference]: Without dead ends: 115 [2018-10-03 09:22:59,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 111 [2018-10-03 09:22:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-03 09:22:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-03 09:22:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:22:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-03 09:22:59,646 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-10-03 09:22:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:22:59,646 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-03 09:22:59,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-03 09:22:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-03 09:22:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-03 09:22:59,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:22:59,647 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-10-03 09:22:59,647 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:22:59,648 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:22:59,648 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-10-03 09:22:59,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:22:59,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:22:59,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:59,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:22:59,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:22:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:03,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:03,066 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:23:03,074 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:23:03,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-03 09:23:03,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:03,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:03,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:03,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-03 09:23:03,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:23:03,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:23:03,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:03,455 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-10-03 09:23:03,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:03,717 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-10-03 09:23:03,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-03 09:23:03,717 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-10-03 09:23:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:03,717 INFO L225 Difference]: With dead ends: 118 [2018-10-03 09:23:03,717 INFO L226 Difference]: Without dead ends: 116 [2018-10-03 09:23:03,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.1s impTime 112 [2018-10-03 09:23:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-03 09:23:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-03 09:23:03,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-03 09:23:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-10-03 09:23:03,720 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-10-03 09:23:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:03,720 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-10-03 09:23:03,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:23:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-10-03 09:23:03,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-03 09:23:03,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:03,721 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-10-03 09:23:03,721 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:03,721 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:03,722 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-10-03 09:23:03,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:03,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:03,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:03,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:03,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:08,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:08,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:23:08,941 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:23:09,013 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:23:09,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:09,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:09,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:09,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-03 09:23:09,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-03 09:23:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-03 09:23:09,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:09,317 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-10-03 09:23:09,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:09,719 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-03 09:23:09,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-03 09:23:09,720 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-10-03 09:23:09,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:09,720 INFO L225 Difference]: With dead ends: 119 [2018-10-03 09:23:09,720 INFO L226 Difference]: Without dead ends: 117 [2018-10-03 09:23:09,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time 4.9s impTime 113 [2018-10-03 09:23:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-03 09:23:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-03 09:23:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-03 09:23:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-03 09:23:09,723 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-10-03 09:23:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:09,723 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-03 09:23:09,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-03 09:23:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-03 09:23:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-03 09:23:09,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:09,724 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-10-03 09:23:09,725 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:09,725 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-10-03 09:23:09,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:09,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:09,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:09,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:09,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:23:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:12,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:23:12,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:23:12,504 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:23:12,624 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-03 09:23:12,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:23:12,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:23:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:23:13,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:23:13,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-03 09:23:13,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-03 09:23:13,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-03 09:23:13,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:23:13,008 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-10-03 09:23:13,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:23:13,335 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-10-03 09:23:13,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-03 09:23:13,336 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-10-03 09:23:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:23:13,336 INFO L225 Difference]: With dead ends: 120 [2018-10-03 09:23:13,336 INFO L226 Difference]: Without dead ends: 118 [2018-10-03 09:23:13,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.4s impTime 114 [2018-10-03 09:23:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-03 09:23:13,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-03 09:23:13,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-03 09:23:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-10-03 09:23:13,339 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-10-03 09:23:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:23:13,339 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-10-03 09:23:13,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-03 09:23:13,339 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-10-03 09:23:13,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-03 09:23:13,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:23:13,339 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-10-03 09:23:13,339 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:23:13,340 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:23:13,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-10-03 09:23:13,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:23:13,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:23:13,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:13,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:23:13,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:23:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:23:13,782 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:23:13,785 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:23:13,786 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:23:13 BoogieIcfgContainer [2018-10-03 09:23:13,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:23:13,787 INFO L168 Benchmark]: Toolchain (without parser) took 237952.51 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -178.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 235.6 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2018-10-03 09:23:13,788 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:23:13,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:23:13,789 INFO L168 Benchmark]: Boogie Preprocessor took 21.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:23:13,790 INFO L168 Benchmark]: RCFGBuilder took 224.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:23:13,790 INFO L168 Benchmark]: TraceAbstraction took 237657.37 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -178.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 214.5 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2018-10-03 09:23:13,793 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 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.27 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 21.41 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 224.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237657.37 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -178.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 214.5 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 24). Cancelled while BasicCegarLoop was analyzing trace of length 118 with TraceHistMax 114, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 116 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 237.5s OverallTime, 115 OverallIterations, 114 TraceHistogramMax, 18.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 344 SDtfs, 2 SDslu, 4601 SDs, 0 SdLazy, 11270 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13336 GetRequests, 6781 SyntacticMatches, 0 SemanticMatches, 6555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 201.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=114, 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, 114 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 206.4s InterpolantComputationTime, 13563 NumberOfCodeBlocks, 13563 NumberOfCodeBlocksAsserted, 1899 NumberOfCheckSat, 13336 ConstructedInterpolants, 0 QuantifiedInterpolants, 3054850 SizeOfPredicates, 113 NumberOfNonLiveVariables, 26781 ConjunctsInSsa, 6667 ConjunctsInUnsatCore, 227 InterpolantComputations, 1 PerfectInterpolantSequences, 0/493810 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/Luxembourg.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-23-13-803.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-23-13-803.csv Completed graceful shutdown