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/20170304-DifficultPathPrograms/array3.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:41:04,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:41:04,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:41:04,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:41:04,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:41:04,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:41:04,622 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:41:04,623 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:41:04,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:41:04,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:41:04,627 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 09:41:04,627 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 09:41:04,628 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 09:41:04,629 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 09:41:04,630 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 09:41:04,631 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 09:41:04,632 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 09:41:04,634 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 09:41:04,636 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 09:41:04,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 09:41:04,639 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 09:41:04,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 09:41:04,643 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 09:41:04,652 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 09:41:04,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:41:04,669 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:41:04,670 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:41:04,671 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:41:04,671 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:41:04,671 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:41:04,672 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:41:04,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:41:04,673 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:41:04,673 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:41:04,673 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:41:04,673 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:41:04,674 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:41:04,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:41:04,674 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:41:04,674 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:41:04,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:41:04,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:41:04,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:41:04,677 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:41:04,677 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:41:04,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:41:04,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:41:04,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:41:04,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:41:04,678 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:41:04,678 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:41:04,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:41:04,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:41:04,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:41:04,679 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:41:04,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:41:04,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:41:04,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:41:04,744 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:41:04,744 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:41:04,745 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl [2018-10-04 09:41:04,746 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/array3.i_4.bpl' [2018-10-04 09:41:04,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:41:04,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:41:04,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:41:04,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:41:04,802 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:41:04,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:41:04,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:41:04,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:41:04,846 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:41:04,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... [2018-10-04 09:41:04,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:41:04,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:41:04,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:41:04,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:41:04,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:41:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 09:41:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 09:41:05,241 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 09:41:05,241 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:41:05 BoogieIcfgContainer [2018-10-04 09:41:05,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:41:05,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:41:05,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:41:05,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:41:05,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:04" (1/2) ... [2018-10-04 09:41:05,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9b1f21 and model type array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:41:05, skipping insertion in model container [2018-10-04 09:41:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:41:05" (2/2) ... [2018-10-04 09:41:05,250 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i_4.bpl [2018-10-04 09:41:05,260 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:41:05,268 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:41:05,323 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:41:05,324 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:41:05,324 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:41:05,324 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:41:05,324 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:41:05,324 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:41:05,325 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:41:05,325 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:41:05,325 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:41:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-10-04 09:41:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:41:05,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:05,351 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-04 09:41:05,353 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:05,362 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:05,362 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times [2018-10-04 09:41:05,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:05,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:05,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:05,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:05,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:05,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:41:05,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:41:05,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:41:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:41:05,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:05,549 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2018-10-04 09:41:05,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:05,649 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-10-04 09:41:05,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:41:05,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-04 09:41:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:05,671 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:41:05,671 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:41:05,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:41:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:41:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:41:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:41:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-04 09:41:05,720 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-10-04 09:41:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:05,720 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-04 09:41:05,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:41:05,721 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-04 09:41:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:41:05,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:05,721 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 09:41:05,722 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:05,722 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:05,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times [2018-10-04 09:41:05,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:05,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:05,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:05,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:05,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-04 09:41:05,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:05,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:05,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:05,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-04 09:41:05,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:05,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:41:05,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:41:05,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:41:05,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:05,997 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-10-04 09:41:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:06,064 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-04 09:41:06,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:41:06,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-04 09:41:06,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:06,065 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:41:06,066 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:41:06,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 09:41:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:41:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:41:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:41:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-10-04 09:41:06,071 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2018-10-04 09:41:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:06,072 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-04 09:41:06,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:41:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-10-04 09:41:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:41:06,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:06,073 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-10-04 09:41:06,073 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:06,073 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 2 times [2018-10-04 09:41:06,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:06,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:06,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:06,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:06,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:06,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-04 09:41:06,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:06,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:06,200 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:06,236 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:06,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:06,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-04 09:41:06,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:06,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:41:06,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:41:06,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:41:06,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:06,316 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2018-10-04 09:41:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:06,412 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-10-04 09:41:06,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:41:06,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-04 09:41:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:06,413 INFO L225 Difference]: With dead ends: 27 [2018-10-04 09:41:06,414 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:41:06,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 09:41:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:41:06,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:41:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:41:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-10-04 09:41:06,420 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-10-04 09:41:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:06,420 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-10-04 09:41:06,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:41:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-10-04 09:41:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:41:06,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:06,422 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2018-10-04 09:41:06,422 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:06,422 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:06,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 3 times [2018-10-04 09:41:06,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:06,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:06,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:06,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:06,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-04 09:41:06,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:06,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:06,669 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:06,738 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 09:41:06,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:06,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-04 09:41:06,881 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:06,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:41:06,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:41:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:41:06,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:06,883 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2018-10-04 09:41:06,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:06,998 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-10-04 09:41:07,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:41:07,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-04 09:41:07,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:07,003 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:41:07,003 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:41:07,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 4 [2018-10-04 09:41:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:41:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:41:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:41:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-04 09:41:07,013 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18 [2018-10-04 09:41:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:07,014 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-04 09:41:07,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:41:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-04 09:41:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:41:07,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:07,016 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2018-10-04 09:41:07,016 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:07,016 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:07,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 4 times [2018-10-04 09:41:07,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:07,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:07,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:07,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:07,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-04 09:41:07,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:07,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:07,177 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:07,209 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:07,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:07,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-04 09:41:07,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:07,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:41:07,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:41:07,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:41:07,376 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:07,376 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2018-10-04 09:41:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:07,426 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-10-04 09:41:07,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:41:07,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-04 09:41:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:07,429 INFO L225 Difference]: With dead ends: 39 [2018-10-04 09:41:07,429 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:41:07,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-04 09:41:07,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:41:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:41:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:41:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-10-04 09:41:07,435 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-10-04 09:41:07,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:07,435 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-10-04 09:41:07,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:41:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-10-04 09:41:07,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:41:07,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:07,436 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1] [2018-10-04 09:41:07,437 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:07,437 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:07,437 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 5 times [2018-10-04 09:41:07,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:07,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:07,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:07,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:07,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-04 09:41:07,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:07,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:07,559 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:07,581 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 09:41:07,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:07,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-04 09:41:07,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:07,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:41:07,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:41:07,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:41:07,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:07,678 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2018-10-04 09:41:07,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:07,932 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-10-04 09:41:07,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:41:07,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-04 09:41:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:07,933 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:41:07,934 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:41:07,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 09:41:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:41:07,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:41:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:41:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-10-04 09:41:07,940 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 26 [2018-10-04 09:41:07,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:07,940 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-10-04 09:41:07,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:41:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-10-04 09:41:07,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:41:07,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:07,942 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1] [2018-10-04 09:41:07,942 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:07,942 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:07,943 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 6 times [2018-10-04 09:41:07,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:07,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:07,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:07,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:07,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-04 09:41:08,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:08,242 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:08,262 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:08,341 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:41:08,342 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:08,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-04 09:41:08,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:08,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:41:08,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:41:08,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:41:08,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:08,426 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2018-10-04 09:41:08,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:08,497 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-10-04 09:41:08,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:41:08,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-04 09:41:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:08,499 INFO L225 Difference]: With dead ends: 51 [2018-10-04 09:41:08,499 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:41:08,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 7 [2018-10-04 09:41:08,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:41:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:41:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:41:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-10-04 09:41:08,505 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2018-10-04 09:41:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:08,506 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-10-04 09:41:08,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:41:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-10-04 09:41:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:41:08,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:08,507 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1] [2018-10-04 09:41:08,507 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:08,508 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:08,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 7 times [2018-10-04 09:41:08,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:08,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:08,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:08,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:08,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-04 09:41:08,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:08,824 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:08,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:08,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-04 09:41:08,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:08,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:41:08,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:41:08,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:41:08,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:08,945 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2018-10-04 09:41:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:09,066 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2018-10-04 09:41:09,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:41:09,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-04 09:41:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:09,069 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:41:09,069 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:41:09,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 8 [2018-10-04 09:41:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:41:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:41:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:41:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-10-04 09:41:09,078 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2018-10-04 09:41:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:09,078 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-10-04 09:41:09,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:41:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-10-04 09:41:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:41:09,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:09,080 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1] [2018-10-04 09:41:09,080 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:09,080 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:09,081 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 8 times [2018-10-04 09:41:09,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:09,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:09,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:09,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:09,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-04 09:41:09,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:09,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:09,284 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:09,310 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:09,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:09,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-04 09:41:09,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:09,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:41:09,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:41:09,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:41:09,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:09,450 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2018-10-04 09:41:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:09,655 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2018-10-04 09:41:09,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:41:09,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-10-04 09:41:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:09,660 INFO L225 Difference]: With dead ends: 63 [2018-10-04 09:41:09,660 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:41:09,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-04 09:41:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:41:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:41:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:41:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2018-10-04 09:41:09,667 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 38 [2018-10-04 09:41:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:09,667 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2018-10-04 09:41:09,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:41:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2018-10-04 09:41:09,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:41:09,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:09,669 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1] [2018-10-04 09:41:09,669 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:09,669 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:09,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 9 times [2018-10-04 09:41:09,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:09,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:09,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:09,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:09,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-04 09:41:09,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:09,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:09,932 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:10,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 09:41:10,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:10,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-04 09:41:10,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:10,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:41:10,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:41:10,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:41:10,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:10,302 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 12 states. [2018-10-04 09:41:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:10,387 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2018-10-04 09:41:10,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:41:10,388 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-10-04 09:41:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:10,389 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:41:10,389 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:41:10,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 10 [2018-10-04 09:41:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:41:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:41:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:41:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2018-10-04 09:41:10,398 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 42 [2018-10-04 09:41:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:10,398 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2018-10-04 09:41:10,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:41:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2018-10-04 09:41:10,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:41:10,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:10,400 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2018-10-04 09:41:10,401 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:10,401 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:10,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 10 times [2018-10-04 09:41:10,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:10,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:10,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:10,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:10,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-04 09:41:10,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:10,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:10,608 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:10,641 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:10,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:10,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-04 09:41:10,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:10,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:41:10,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:41:10,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:41:10,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:10,742 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 13 states. [2018-10-04 09:41:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:10,840 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-10-04 09:41:10,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:41:10,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-10-04 09:41:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:10,842 INFO L225 Difference]: With dead ends: 75 [2018-10-04 09:41:10,842 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:41:10,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 11 [2018-10-04 09:41:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:41:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:41:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:41:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-10-04 09:41:10,849 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 46 [2018-10-04 09:41:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:10,849 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-10-04 09:41:10,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:41:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-10-04 09:41:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:41:10,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:10,851 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1] [2018-10-04 09:41:10,851 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:10,851 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:10,851 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 11 times [2018-10-04 09:41:10,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:10,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:10,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:10,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:10,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-04 09:41:11,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:11,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:11,042 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:11,091 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 09:41:11,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:11,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-04 09:41:11,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:11,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:41:11,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:41:11,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:41:11,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:11,192 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 14 states. [2018-10-04 09:41:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:11,261 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2018-10-04 09:41:11,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:41:11,261 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-10-04 09:41:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:11,263 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:41:11,263 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:41:11,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 12 [2018-10-04 09:41:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:41:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:41:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:41:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-10-04 09:41:11,270 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 50 [2018-10-04 09:41:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:11,271 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-10-04 09:41:11,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:41:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-10-04 09:41:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:41:11,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:11,272 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1] [2018-10-04 09:41:11,273 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:11,273 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 12 times [2018-10-04 09:41:11,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:11,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:11,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:11,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:11,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-04 09:41:11,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:11,499 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:11,507 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:11,553 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:41:11,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:11,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:11,716 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-10-04 09:41:11,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:11,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:41:11,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:41:11,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:41:11,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:11,738 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 15 states. [2018-10-04 09:41:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:11,843 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2018-10-04 09:41:11,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:41:11,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-10-04 09:41:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:11,848 INFO L225 Difference]: With dead ends: 87 [2018-10-04 09:41:11,848 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:41:11,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-04 09:41:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:41:11,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:41:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:41:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-10-04 09:41:11,855 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 54 [2018-10-04 09:41:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:11,855 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-10-04 09:41:11,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:41:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-10-04 09:41:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:41:11,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:11,856 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1] [2018-10-04 09:41:11,857 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:11,857 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 13 times [2018-10-04 09:41:11,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:11,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:11,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:11,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:11,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-10-04 09:41:12,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:12,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:12,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:12,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-10-04 09:41:12,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:12,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:41:12,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:41:12,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:41:12,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:12,483 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 16 states. [2018-10-04 09:41:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:12,739 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2018-10-04 09:41:12,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:41:12,739 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-10-04 09:41:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:12,740 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:41:12,740 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:41:12,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 14 [2018-10-04 09:41:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:41:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:41:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:41:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-10-04 09:41:12,749 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 58 [2018-10-04 09:41:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:12,749 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-10-04 09:41:12,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:41:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-10-04 09:41:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:41:12,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:12,750 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1] [2018-10-04 09:41:12,751 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:12,751 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:12,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 14 times [2018-10-04 09:41:12,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:12,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:12,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:12,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:12,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-04 09:41:13,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:13,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:13,329 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:13,366 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:13,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:13,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-04 09:41:13,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:13,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:41:13,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:41:13,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:41:13,625 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:13,625 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 17 states. [2018-10-04 09:41:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:13,713 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2018-10-04 09:41:13,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:41:13,713 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-10-04 09:41:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:13,714 INFO L225 Difference]: With dead ends: 99 [2018-10-04 09:41:13,714 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:41:13,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime 15 [2018-10-04 09:41:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:41:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:41:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:41:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-10-04 09:41:13,721 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2018-10-04 09:41:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:13,722 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-10-04 09:41:13,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:41:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-10-04 09:41:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:41:13,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:13,723 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1] [2018-10-04 09:41:13,724 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:13,724 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:13,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 15 times [2018-10-04 09:41:13,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:13,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:13,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:13,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:13,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-04 09:41:13,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:13,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:13,975 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:14,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 09:41:14,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:14,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-04 09:41:14,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:14,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:41:14,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:41:14,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:41:14,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:14,171 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 18 states. [2018-10-04 09:41:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:14,386 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-10-04 09:41:14,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:41:14,387 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-10-04 09:41:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:14,388 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:41:14,388 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:41:14,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 16 [2018-10-04 09:41:14,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:41:14,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:41:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:41:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-10-04 09:41:14,395 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2018-10-04 09:41:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:14,395 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-10-04 09:41:14,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:41:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-10-04 09:41:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:41:14,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:14,396 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1] [2018-10-04 09:41:14,397 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:14,397 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:14,397 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 16 times [2018-10-04 09:41:14,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:14,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:14,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:14,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:14,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-04 09:41:14,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:14,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:14,776 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:14,808 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:14,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:14,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-10-04 09:41:14,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:14,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:41:14,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:41:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:41:14,983 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:14,983 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 19 states. [2018-10-04 09:41:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:15,060 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2018-10-04 09:41:15,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:41:15,061 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-10-04 09:41:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:15,062 INFO L225 Difference]: With dead ends: 111 [2018-10-04 09:41:15,062 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:41:15,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 17 [2018-10-04 09:41:15,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:41:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:41:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:41:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2018-10-04 09:41:15,068 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 70 [2018-10-04 09:41:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:15,069 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2018-10-04 09:41:15,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:41:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2018-10-04 09:41:15,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:41:15,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:15,070 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1] [2018-10-04 09:41:15,070 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:15,070 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:15,071 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 17 times [2018-10-04 09:41:15,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:15,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:15,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:15,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-04 09:41:15,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:15,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:15,380 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:15,458 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 09:41:15,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:15,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-04 09:41:15,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:15,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:41:15,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:41:15,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:41:15,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:15,776 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 20 states. [2018-10-04 09:41:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:16,199 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2018-10-04 09:41:16,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:41:16,200 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-10-04 09:41:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:16,201 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:41:16,201 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:41:16,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 18 [2018-10-04 09:41:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:41:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:41:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:41:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2018-10-04 09:41:16,208 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 74 [2018-10-04 09:41:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:16,208 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2018-10-04 09:41:16,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:41:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2018-10-04 09:41:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:41:16,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:16,209 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1] [2018-10-04 09:41:16,210 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:16,210 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 18 times [2018-10-04 09:41:16,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:16,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:16,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:16,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:17,174 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-04 09:41:17,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:17,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:17,187 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:17,256 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:41:17,257 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:17,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-04 09:41:17,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:17,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:41:17,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:41:17,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:41:17,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:17,426 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 21 states. [2018-10-04 09:41:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:17,587 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2018-10-04 09:41:17,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:41:17,587 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-10-04 09:41:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:17,588 INFO L225 Difference]: With dead ends: 123 [2018-10-04 09:41:17,589 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:41:17,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 6 [2018-10-04 09:41:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:41:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:41:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:41:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-10-04 09:41:17,595 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 78 [2018-10-04 09:41:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:17,595 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-10-04 09:41:17,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:41:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-10-04 09:41:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:41:17,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:17,597 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1] [2018-10-04 09:41:17,597 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:17,597 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:17,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 19 times [2018-10-04 09:41:17,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:17,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:17,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:17,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:17,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:18,076 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-04 09:41:18,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:18,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:18,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:18,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-04 09:41:18,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:18,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:41:18,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:41:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:41:18,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:18,313 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 22 states. [2018-10-04 09:41:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:18,403 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2018-10-04 09:41:18,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:41:18,404 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-04 09:41:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:18,405 INFO L225 Difference]: With dead ends: 129 [2018-10-04 09:41:18,405 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:41:18,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 7 [2018-10-04 09:41:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:41:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:41:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:41:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-10-04 09:41:18,412 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 82 [2018-10-04 09:41:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:18,412 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2018-10-04 09:41:18,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:41:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2018-10-04 09:41:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:41:18,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:18,413 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1] [2018-10-04 09:41:18,414 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:18,414 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 20 times [2018-10-04 09:41:18,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:18,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:18,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:18,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:18,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:18,796 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-10-04 09:41:18,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:18,831 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:18,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:18,887 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:18,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:18,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-10-04 09:41:19,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:19,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:41:19,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:41:19,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:41:19,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:19,041 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 23 states. [2018-10-04 09:41:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:19,128 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-10-04 09:41:19,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:41:19,128 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-10-04 09:41:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:19,129 INFO L225 Difference]: With dead ends: 135 [2018-10-04 09:41:19,130 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:41:19,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 8 [2018-10-04 09:41:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:41:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:41:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:41:19,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2018-10-04 09:41:19,133 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 86 [2018-10-04 09:41:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:19,134 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2018-10-04 09:41:19,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:41:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2018-10-04 09:41:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:41:19,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:19,135 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1] [2018-10-04 09:41:19,135 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:19,135 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 21 times [2018-10-04 09:41:19,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:19,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:19,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:19,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:19,448 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-10-04 09:41:19,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:19,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:19,510 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:19,610 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 09:41:19,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:19,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2018-10-04 09:41:19,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:19,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:41:19,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:41:19,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:41:19,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:19,764 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 24 states. [2018-10-04 09:41:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:19,877 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2018-10-04 09:41:19,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:41:19,880 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-10-04 09:41:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:19,880 INFO L225 Difference]: With dead ends: 141 [2018-10-04 09:41:19,880 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:41:19,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 9 [2018-10-04 09:41:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:41:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:41:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:41:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-10-04 09:41:19,885 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 90 [2018-10-04 09:41:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:19,885 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-10-04 09:41:19,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:41:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-10-04 09:41:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:41:19,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:19,887 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2018-10-04 09:41:19,887 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:19,887 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 22 times [2018-10-04 09:41:19,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:19,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:20,393 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-10-04 09:41:20,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:20,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:20,488 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:20,526 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:20,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:20,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-10-04 09:41:20,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:20,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:41:20,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:41:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:41:20,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:20,695 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 25 states. [2018-10-04 09:41:20,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:20,790 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2018-10-04 09:41:20,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:41:20,790 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-10-04 09:41:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:20,791 INFO L225 Difference]: With dead ends: 147 [2018-10-04 09:41:20,792 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:41:20,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 10 [2018-10-04 09:41:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:41:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:41:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:41:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2018-10-04 09:41:20,796 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 94 [2018-10-04 09:41:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:20,797 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2018-10-04 09:41:20,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:41:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2018-10-04 09:41:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:41:20,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:20,798 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1] [2018-10-04 09:41:20,798 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:20,798 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:20,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 23 times [2018-10-04 09:41:20,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:20,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:20,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:20,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:20,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:21,637 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-10-04 09:41:21,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:21,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:21,722 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:21,893 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 09:41:21,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:21,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2018-10-04 09:41:22,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:22,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:41:22,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:41:22,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:41:22,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:22,038 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 26 states. [2018-10-04 09:41:22,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:22,154 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2018-10-04 09:41:22,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:41:22,154 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-10-04 09:41:22,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:22,155 INFO L225 Difference]: With dead ends: 153 [2018-10-04 09:41:22,155 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:41:22,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 11 [2018-10-04 09:41:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:41:22,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:41:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:41:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2018-10-04 09:41:22,160 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2018-10-04 09:41:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:22,160 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2018-10-04 09:41:22,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:41:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2018-10-04 09:41:22,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:41:22,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:22,161 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1] [2018-10-04 09:41:22,161 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:22,161 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:22,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 24 times [2018-10-04 09:41:22,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:22,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:22,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:22,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:22,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:22,591 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-10-04 09:41:22,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:22,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:22,719 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:22,856 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:41:22,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:22,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2018-10-04 09:41:23,013 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:23,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:41:23,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:41:23,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:41:23,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:23,015 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 27 states. [2018-10-04 09:41:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:23,151 INFO L93 Difference]: Finished difference Result 159 states and 162 transitions. [2018-10-04 09:41:23,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:41:23,152 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-10-04 09:41:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:23,153 INFO L225 Difference]: With dead ends: 159 [2018-10-04 09:41:23,153 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:41:23,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 12 [2018-10-04 09:41:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:41:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:41:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:41:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2018-10-04 09:41:23,157 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 102 [2018-10-04 09:41:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:23,158 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2018-10-04 09:41:23,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:41:23,158 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2018-10-04 09:41:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:41:23,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:23,159 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1] [2018-10-04 09:41:23,159 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:23,159 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:23,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 25 times [2018-10-04 09:41:23,159 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:23,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:23,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:23,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:23,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:23,630 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-10-04 09:41:23,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:23,721 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:23,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:23,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2018-10-04 09:41:23,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:23,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:41:23,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:41:23,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:41:23,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:23,926 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 28 states. [2018-10-04 09:41:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:24,056 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-10-04 09:41:24,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:41:24,057 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-10-04 09:41:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:24,058 INFO L225 Difference]: With dead ends: 165 [2018-10-04 09:41:24,058 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:41:24,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 13 [2018-10-04 09:41:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:41:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:41:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:41:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2018-10-04 09:41:24,064 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 106 [2018-10-04 09:41:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:24,064 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2018-10-04 09:41:24,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:41:24,064 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2018-10-04 09:41:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:41:24,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:24,065 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1] [2018-10-04 09:41:24,065 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:24,065 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 26 times [2018-10-04 09:41:24,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:24,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:24,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:24,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:24,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:24,309 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-10-04 09:41:24,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:24,379 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:24,386 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:24,433 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:24,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:24,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2018-10-04 09:41:24,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:24,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:41:24,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:41:24,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:41:24,625 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:24,625 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 29 states. [2018-10-04 09:41:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:24,808 INFO L93 Difference]: Finished difference Result 171 states and 174 transitions. [2018-10-04 09:41:24,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:41:24,808 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-10-04 09:41:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:24,809 INFO L225 Difference]: With dead ends: 171 [2018-10-04 09:41:24,810 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:41:24,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 14 [2018-10-04 09:41:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:41:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:41:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:41:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2018-10-04 09:41:24,815 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 110 [2018-10-04 09:41:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:24,815 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2018-10-04 09:41:24,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:41:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2018-10-04 09:41:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:41:24,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:24,817 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1] [2018-10-04 09:41:24,817 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:24,817 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:24,817 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 27 times [2018-10-04 09:41:24,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:24,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:24,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:24,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:24,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:25,178 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-10-04 09:41:25,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:25,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:25,352 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:25,529 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 09:41:25,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:25,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-10-04 09:41:25,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:25,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:41:25,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:41:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:41:25,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:25,672 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 30 states. [2018-10-04 09:41:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:25,775 INFO L93 Difference]: Finished difference Result 177 states and 180 transitions. [2018-10-04 09:41:25,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:41:25,776 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-10-04 09:41:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:25,777 INFO L225 Difference]: With dead ends: 177 [2018-10-04 09:41:25,777 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 09:41:25,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 15 [2018-10-04 09:41:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 09:41:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 09:41:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 09:41:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2018-10-04 09:41:25,782 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 114 [2018-10-04 09:41:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:25,782 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2018-10-04 09:41:25,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:41:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2018-10-04 09:41:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 09:41:25,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:25,783 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1] [2018-10-04 09:41:25,783 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:25,784 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 28 times [2018-10-04 09:41:25,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:25,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:25,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:26,856 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-10-04 09:41:27,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:27,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:27,084 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:27,151 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:27,151 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:27,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2018-10-04 09:41:28,198 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:28,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:41:28,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:41:28,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:41:28,199 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:28,199 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 31 states. [2018-10-04 09:41:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:28,318 INFO L93 Difference]: Finished difference Result 183 states and 186 transitions. [2018-10-04 09:41:28,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:41:28,319 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-10-04 09:41:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:28,320 INFO L225 Difference]: With dead ends: 183 [2018-10-04 09:41:28,320 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 09:41:28,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 0.9s impTime 16 [2018-10-04 09:41:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 09:41:28,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 09:41:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 09:41:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2018-10-04 09:41:28,325 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 118 [2018-10-04 09:41:28,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:28,325 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2018-10-04 09:41:28,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:41:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2018-10-04 09:41:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 09:41:28,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:28,326 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1] [2018-10-04 09:41:28,326 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:28,327 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:28,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 29 times [2018-10-04 09:41:28,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:28,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:28,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:28,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:28,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:28,598 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-10-04 09:41:28,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:28,839 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:28,846 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:29,106 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 09:41:29,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:29,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2018-10-04 09:41:29,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:29,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:41:29,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:41:29,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:41:29,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:29,258 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 32 states. [2018-10-04 09:41:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:29,384 INFO L93 Difference]: Finished difference Result 189 states and 192 transitions. [2018-10-04 09:41:29,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:41:29,385 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-10-04 09:41:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:29,386 INFO L225 Difference]: With dead ends: 189 [2018-10-04 09:41:29,386 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 09:41:29,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 17 [2018-10-04 09:41:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 09:41:29,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 09:41:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 09:41:29,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2018-10-04 09:41:29,391 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 122 [2018-10-04 09:41:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:29,392 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2018-10-04 09:41:29,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:41:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2018-10-04 09:41:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 09:41:29,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:29,393 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1] [2018-10-04 09:41:29,393 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:29,393 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:29,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 30 times [2018-10-04 09:41:29,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:29,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:29,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:29,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:29,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:30,014 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-04 09:41:30,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:30,355 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:30,379 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:30,556 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:41:30,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:30,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-04 09:41:30,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:30,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:41:30,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:41:30,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:41:30,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:30,704 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 33 states. [2018-10-04 09:41:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:30,850 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-10-04 09:41:30,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:41:30,850 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-04 09:41:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:30,851 INFO L225 Difference]: With dead ends: 195 [2018-10-04 09:41:30,851 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 09:41:30,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 18 [2018-10-04 09:41:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 09:41:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 09:41:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 09:41:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-10-04 09:41:30,856 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 126 [2018-10-04 09:41:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:30,857 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-10-04 09:41:30,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:41:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-10-04 09:41:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 09:41:30,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:30,858 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1] [2018-10-04 09:41:30,858 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:30,858 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 31 times [2018-10-04 09:41:30,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:30,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:30,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:30,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:30,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:31,078 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-10-04 09:41:31,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:31,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:31,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:31,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2018-10-04 09:41:31,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:31,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:41:31,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:41:31,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:41:31,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:31,651 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 34 states. [2018-10-04 09:41:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:32,659 INFO L93 Difference]: Finished difference Result 201 states and 204 transitions. [2018-10-04 09:41:32,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:41:32,660 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-10-04 09:41:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:32,661 INFO L225 Difference]: With dead ends: 201 [2018-10-04 09:41:32,661 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 09:41:32,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 19 [2018-10-04 09:41:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 09:41:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 09:41:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 09:41:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-10-04 09:41:32,666 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 130 [2018-10-04 09:41:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:32,666 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-10-04 09:41:32,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:41:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-10-04 09:41:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 09:41:32,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:32,667 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1] [2018-10-04 09:41:32,667 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:32,667 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:32,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1452361141, now seen corresponding path program 32 times [2018-10-04 09:41:32,668 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:32,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:32,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:32,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:32,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:33,032 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-10-04 09:41:33,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:33,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:33,340 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:33,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:33,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:33,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2018-10-04 09:41:33,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:33,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:41:33,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:41:33,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:41:33,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:33,546 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 35 states. [2018-10-04 09:41:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:33,677 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2018-10-04 09:41:33,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:41:33,677 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-10-04 09:41:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:33,678 INFO L225 Difference]: With dead ends: 207 [2018-10-04 09:41:33,679 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 09:41:33,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 20 [2018-10-04 09:41:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 09:41:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 09:41:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 09:41:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-10-04 09:41:33,683 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2018-10-04 09:41:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:33,684 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-10-04 09:41:33,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:41:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-10-04 09:41:33,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 09:41:33,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:33,685 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1] [2018-10-04 09:41:33,685 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:33,685 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash 957810879, now seen corresponding path program 33 times [2018-10-04 09:41:33,686 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:33,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:33,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:33,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:33,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:34,047 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-10-04 09:41:34,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:34,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:34,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:34,738 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 09:41:34,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:34,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2018-10-04 09:41:34,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:34,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:41:34,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:41:34,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:41:34,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:34,909 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 36 states. [2018-10-04 09:41:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:35,056 INFO L93 Difference]: Finished difference Result 213 states and 216 transitions. [2018-10-04 09:41:35,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:41:35,056 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-10-04 09:41:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:35,057 INFO L225 Difference]: With dead ends: 213 [2018-10-04 09:41:35,057 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 09:41:35,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 21 [2018-10-04 09:41:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 09:41:35,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 09:41:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 09:41:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2018-10-04 09:41:35,062 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 138 [2018-10-04 09:41:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:35,062 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2018-10-04 09:41:35,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:41:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2018-10-04 09:41:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 09:41:35,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:35,063 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1] [2018-10-04 09:41:35,063 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:35,063 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:35,063 INFO L82 PathProgramCache]: Analyzing trace with hash 963550515, now seen corresponding path program 34 times [2018-10-04 09:41:35,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:35,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:35,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:35,064 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:35,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:35,381 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:35,597 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-10-04 09:41:35,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:35,620 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:35,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:35,695 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:35,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:35,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-10-04 09:41:35,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:35,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:41:35,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:41:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:41:35,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:35,873 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand 37 states. [2018-10-04 09:41:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:36,116 INFO L93 Difference]: Finished difference Result 219 states and 222 transitions. [2018-10-04 09:41:36,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:41:36,116 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-10-04 09:41:36,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:36,117 INFO L225 Difference]: With dead ends: 219 [2018-10-04 09:41:36,117 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 09:41:36,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 7 [2018-10-04 09:41:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 09:41:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 09:41:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 09:41:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2018-10-04 09:41:36,122 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 142 [2018-10-04 09:41:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:36,122 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2018-10-04 09:41:36,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:41:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2018-10-04 09:41:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 09:41:36,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:36,123 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1] [2018-10-04 09:41:36,124 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:36,124 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:36,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1526364071, now seen corresponding path program 35 times [2018-10-04 09:41:36,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:36,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:36,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:36,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:36,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:38,633 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:39,067 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-10-04 09:41:39,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:39,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:39,120 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:39,675 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 09:41:39,675 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:39,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2018-10-04 09:41:40,326 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:40,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:41:40,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:41:40,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:41:40,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:40,327 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand 38 states. [2018-10-04 09:41:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:40,574 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-10-04 09:41:40,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:41:40,575 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-10-04 09:41:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:40,576 INFO L225 Difference]: With dead ends: 225 [2018-10-04 09:41:40,576 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 09:41:40,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.3s impTime 8 [2018-10-04 09:41:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 09:41:40,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 09:41:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 09:41:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2018-10-04 09:41:40,584 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 146 [2018-10-04 09:41:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:40,584 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2018-10-04 09:41:40,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:41:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2018-10-04 09:41:40,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 09:41:40,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:40,585 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1] [2018-10-04 09:41:40,585 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:40,585 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:40,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2109708315, now seen corresponding path program 36 times [2018-10-04 09:41:40,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:40,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:40,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:40,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:40,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:41,226 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:42,165 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-10-04 09:41:42,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:42,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:42,467 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:42,771 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:41:42,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:42,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1332 trivial. 0 not checked. [2018-10-04 09:41:42,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:42,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:41:42,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:41:42,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:41:42,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:42,974 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 39 states. [2018-10-04 09:41:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:43,133 INFO L93 Difference]: Finished difference Result 231 states and 234 transitions. [2018-10-04 09:41:43,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:41:43,134 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-10-04 09:41:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:43,135 INFO L225 Difference]: With dead ends: 231 [2018-10-04 09:41:43,135 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 09:41:43,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 9 [2018-10-04 09:41:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 09:41:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 09:41:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 09:41:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2018-10-04 09:41:43,142 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 150 [2018-10-04 09:41:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:43,142 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2018-10-04 09:41:43,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:41:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2018-10-04 09:41:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 09:41:43,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:43,143 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1] [2018-10-04 09:41:43,143 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:43,144 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:43,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1900215951, now seen corresponding path program 37 times [2018-10-04 09:41:43,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:43,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:43,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:43,145 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:43,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:44,007 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:44,415 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-10-04 09:41:44,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:44,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:44,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:44,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-10-04 09:41:44,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:44,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:41:44,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:41:44,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:41:44,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:44,803 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand 40 states. [2018-10-04 09:41:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:44,960 INFO L93 Difference]: Finished difference Result 237 states and 240 transitions. [2018-10-04 09:41:44,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:41:44,960 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-10-04 09:41:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:44,962 INFO L225 Difference]: With dead ends: 237 [2018-10-04 09:41:44,962 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 09:41:44,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 10 [2018-10-04 09:41:44,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 09:41:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 09:41:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 09:41:44,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2018-10-04 09:41:44,966 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 154 [2018-10-04 09:41:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:44,966 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2018-10-04 09:41:44,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:41:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2018-10-04 09:41:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 09:41:44,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:44,967 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1] [2018-10-04 09:41:44,967 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:44,968 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:44,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1266046205, now seen corresponding path program 38 times [2018-10-04 09:41:44,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:44,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:44,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:44,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:44,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:45,410 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:45,995 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-10-04 09:41:46,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:46,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:46,040 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:46,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:46,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:46,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:47,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2018-10-04 09:41:47,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:47,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:41:47,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:41:47,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:41:47,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:47,315 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand 41 states. [2018-10-04 09:41:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:47,564 INFO L93 Difference]: Finished difference Result 243 states and 246 transitions. [2018-10-04 09:41:47,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:41:47,565 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-10-04 09:41:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:47,566 INFO L225 Difference]: With dead ends: 243 [2018-10-04 09:41:47,566 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 09:41:47,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 0.7s impTime 11 [2018-10-04 09:41:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 09:41:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 09:41:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 09:41:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2018-10-04 09:41:47,571 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 158 [2018-10-04 09:41:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:47,571 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2018-10-04 09:41:47,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:41:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2018-10-04 09:41:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 09:41:47,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:47,572 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1] [2018-10-04 09:41:47,573 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:47,573 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:47,573 INFO L82 PathProgramCache]: Analyzing trace with hash 907582839, now seen corresponding path program 39 times [2018-10-04 09:41:47,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:47,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:47,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:47,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:47,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:48,075 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:48,461 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-10-04 09:41:48,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:48,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:48,650 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:49,142 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 09:41:49,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:49,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2018-10-04 09:41:49,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:49,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:41:49,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:41:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:41:49,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:49,312 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand 42 states. [2018-10-04 09:41:49,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:49,549 INFO L93 Difference]: Finished difference Result 249 states and 252 transitions. [2018-10-04 09:41:49,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:41:49,549 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-10-04 09:41:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:49,550 INFO L225 Difference]: With dead ends: 249 [2018-10-04 09:41:49,551 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 09:41:49,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 12 [2018-10-04 09:41:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 09:41:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 09:41:49,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 09:41:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2018-10-04 09:41:49,556 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 162 [2018-10-04 09:41:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:49,556 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2018-10-04 09:41:49,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:41:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2018-10-04 09:41:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 09:41:49,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:49,557 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1] [2018-10-04 09:41:49,557 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:49,558 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:49,558 INFO L82 PathProgramCache]: Analyzing trace with hash 334812651, now seen corresponding path program 40 times [2018-10-04 09:41:49,558 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:49,558 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:49,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:49,559 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:49,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:49,820 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:50,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-10-04 09:41:50,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:50,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:50,318 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:50,390 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:50,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:50,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2018-10-04 09:41:50,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:50,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:41:50,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:41:50,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:41:50,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:50,613 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand 43 states. [2018-10-04 09:41:50,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:50,896 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2018-10-04 09:41:50,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:41:50,896 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-10-04 09:41:50,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:50,898 INFO L225 Difference]: With dead ends: 255 [2018-10-04 09:41:50,898 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 09:41:50,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 13 [2018-10-04 09:41:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 09:41:50,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 09:41:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 09:41:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2018-10-04 09:41:50,902 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 166 [2018-10-04 09:41:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:50,903 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2018-10-04 09:41:50,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:41:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2018-10-04 09:41:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 09:41:50,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:50,904 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1] [2018-10-04 09:41:50,904 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:50,904 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1537430623, now seen corresponding path program 41 times [2018-10-04 09:41:50,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:50,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:50,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:50,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:50,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:51,221 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:51,592 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-10-04 09:41:51,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:51,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:51,894 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:52,689 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 09:41:52,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:52,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2018-10-04 09:41:53,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:53,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:41:53,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:41:53,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:41:53,261 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:53,261 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand 44 states. [2018-10-04 09:41:53,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:53,455 INFO L93 Difference]: Finished difference Result 261 states and 264 transitions. [2018-10-04 09:41:53,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:41:53,456 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-10-04 09:41:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:53,457 INFO L225 Difference]: With dead ends: 261 [2018-10-04 09:41:53,458 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 09:41:53,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.7s impTime 14 [2018-10-04 09:41:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 09:41:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 09:41:53,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 09:41:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2018-10-04 09:41:53,462 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2018-10-04 09:41:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:53,463 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2018-10-04 09:41:53,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:41:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2018-10-04 09:41:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 09:41:53,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:53,464 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1] [2018-10-04 09:41:53,464 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:53,464 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash -903276333, now seen corresponding path program 42 times [2018-10-04 09:41:53,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:53,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:53,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:53,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:53,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:53,712 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:53,899 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-10-04 09:41:54,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:54,076 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) [2018-10-04 09:41:54,091 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:54,598 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:41:54,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:54,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2018-10-04 09:41:54,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:54,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:41:54,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:41:54,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:41:54,808 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:54,808 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand 45 states. [2018-10-04 09:41:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:54,980 INFO L93 Difference]: Finished difference Result 267 states and 270 transitions. [2018-10-04 09:41:54,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:41:54,981 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-10-04 09:41:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:54,982 INFO L225 Difference]: With dead ends: 267 [2018-10-04 09:41:54,982 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 09:41:54,983 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 15 [2018-10-04 09:41:54,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 09:41:54,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 09:41:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 09:41:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2018-10-04 09:41:54,987 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 174 [2018-10-04 09:41:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:54,987 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2018-10-04 09:41:54,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:41:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2018-10-04 09:41:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 09:41:54,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:54,988 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1] [2018-10-04 09:41:54,989 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:54,989 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:54,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1945427129, now seen corresponding path program 43 times [2018-10-04 09:41:54,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:54,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:54,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:54,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:54,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:55,409 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:56,016 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-10-04 09:41:56,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:56,262 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:56,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:56,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2018-10-04 09:41:56,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:56,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:41:56,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:41:56,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:41:56,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:56,535 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand 46 states. [2018-10-04 09:41:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:56,738 INFO L93 Difference]: Finished difference Result 273 states and 276 transitions. [2018-10-04 09:41:56,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:41:56,739 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-10-04 09:41:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:56,740 INFO L225 Difference]: With dead ends: 273 [2018-10-04 09:41:56,740 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 09:41:56,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 16 [2018-10-04 09:41:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 09:41:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 09:41:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 09:41:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2018-10-04 09:41:56,744 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 178 [2018-10-04 09:41:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:56,744 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2018-10-04 09:41:56,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:41:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2018-10-04 09:41:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 09:41:56,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:56,745 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1] [2018-10-04 09:41:56,745 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:56,746 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:56,746 INFO L82 PathProgramCache]: Analyzing trace with hash -45190213, now seen corresponding path program 44 times [2018-10-04 09:41:56,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:56,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:56,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:56,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:56,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:57,883 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:58,499 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-10-04 09:41:58,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:58,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:41:58,637 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:58,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:58,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:58,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-10-04 09:41:58,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:58,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:41:58,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:41:58,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:41:58,940 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:58,940 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand 47 states. [2018-10-04 09:41:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:59,194 INFO L93 Difference]: Finished difference Result 279 states and 282 transitions. [2018-10-04 09:41:59,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:41:59,195 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-10-04 09:41:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:59,196 INFO L225 Difference]: With dead ends: 279 [2018-10-04 09:41:59,197 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 09:41:59,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 17 [2018-10-04 09:41:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 09:41:59,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 09:41:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 09:41:59,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-10-04 09:41:59,201 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 182 [2018-10-04 09:41:59,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:59,201 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-10-04 09:41:59,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:41:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-10-04 09:41:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 09:41:59,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:59,203 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1] [2018-10-04 09:41:59,203 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:59,203 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:59,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1769474607, now seen corresponding path program 45 times [2018-10-04 09:41:59,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:59,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:59,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:59,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:59,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:59,827 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:00,005 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-10-04 09:42:00,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:00,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:42:00,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:01,178 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 09:42:01,179 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:01,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2018-10-04 09:42:01,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:01,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:42:01,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:42:01,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:42:01,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:01,498 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 48 states. [2018-10-04 09:42:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:01,704 INFO L93 Difference]: Finished difference Result 285 states and 288 transitions. [2018-10-04 09:42:01,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:42:01,705 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-10-04 09:42:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:01,706 INFO L225 Difference]: With dead ends: 285 [2018-10-04 09:42:01,706 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 09:42:01,706 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime 18 [2018-10-04 09:42:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 09:42:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 09:42:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 09:42:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2018-10-04 09:42:01,714 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 186 [2018-10-04 09:42:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:01,714 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2018-10-04 09:42:01,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:42:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2018-10-04 09:42:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 09:42:01,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:01,715 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2018-10-04 09:42:01,716 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:01,716 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash -879958365, now seen corresponding path program 46 times [2018-10-04 09:42:01,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:01,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:01,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:01,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:01,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:02,687 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:03,072 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-10-04 09:42:03,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:03,331 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:42:03,339 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:03,417 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:03,417 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:03,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2018-10-04 09:42:03,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:03,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:42:03,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:42:03,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:42:03,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:03,642 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand 49 states. [2018-10-04 09:42:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:03,857 INFO L93 Difference]: Finished difference Result 291 states and 294 transitions. [2018-10-04 09:42:03,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:42:03,857 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-10-04 09:42:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:03,859 INFO L225 Difference]: With dead ends: 291 [2018-10-04 09:42:03,859 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 09:42:03,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 19 [2018-10-04 09:42:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 09:42:03,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 09:42:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 09:42:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 196 transitions. [2018-10-04 09:42:03,864 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 196 transitions. Word has length 190 [2018-10-04 09:42:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:03,865 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 196 transitions. [2018-10-04 09:42:03,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:42:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 196 transitions. [2018-10-04 09:42:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 09:42:03,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:03,866 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1] [2018-10-04 09:42:03,866 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:03,866 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:03,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1911420649, now seen corresponding path program 47 times [2018-10-04 09:42:03,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:03,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:03,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:03,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:03,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:04,373 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:04,710 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-10-04 09:42:05,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:05,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:42:05,145 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:06,214 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 09:42:06,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:06,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:06,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-10-04 09:42:06,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:06,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:42:06,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:42:06,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:42:06,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:06,610 INFO L87 Difference]: Start difference. First operand 195 states and 196 transitions. Second operand 50 states. [2018-10-04 09:42:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:06,882 INFO L93 Difference]: Finished difference Result 297 states and 300 transitions. [2018-10-04 09:42:06,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:42:06,883 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-10-04 09:42:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:06,884 INFO L225 Difference]: With dead ends: 297 [2018-10-04 09:42:06,884 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 09:42:06,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 20 [2018-10-04 09:42:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 09:42:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 09:42:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 09:42:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-10-04 09:42:06,890 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 194 [2018-10-04 09:42:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:06,890 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-10-04 09:42:06,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:42:06,890 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-10-04 09:42:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 09:42:06,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:06,891 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1] [2018-10-04 09:42:06,891 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:06,892 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:06,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1259106699, now seen corresponding path program 48 times [2018-10-04 09:42:06,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:06,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:06,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:06,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:06,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:07,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:07,620 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-10-04 09:42:08,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:08,096 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:42:08,104 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:08,831 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:42:08,831 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:08,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-10-04 09:42:09,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:09,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:42:09,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:42:09,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:42:09,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:09,048 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 51 states. [2018-10-04 09:42:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:09,354 INFO L93 Difference]: Finished difference Result 303 states and 306 transitions. [2018-10-04 09:42:09,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:42:09,354 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-10-04 09:42:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:09,355 INFO L225 Difference]: With dead ends: 303 [2018-10-04 09:42:09,356 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 09:42:09,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 21 [2018-10-04 09:42:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 09:42:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 09:42:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 09:42:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-10-04 09:42:09,362 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 198 [2018-10-04 09:42:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:09,362 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-10-04 09:42:09,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:42:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-10-04 09:42:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 09:42:09,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:09,363 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1] [2018-10-04 09:42:09,363 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:09,363 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:09,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1946083329, now seen corresponding path program 49 times [2018-10-04 09:42:09,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:09,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:09,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:09,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:09,672 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:09,961 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:10,251 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-10-04 09:42:10,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:10,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:42:10,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:10,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-10-04 09:42:10,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:10,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:42:10,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:42:10,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:42:10,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:10,559 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 52 states. [2018-10-04 09:42:10,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:10,826 INFO L93 Difference]: Finished difference Result 309 states and 312 transitions. [2018-10-04 09:42:10,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:42:10,827 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-10-04 09:42:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:10,829 INFO L225 Difference]: With dead ends: 309 [2018-10-04 09:42:10,829 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 09:42:10,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 7 [2018-10-04 09:42:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 09:42:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 09:42:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 09:42:10,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-10-04 09:42:10,834 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 202 [2018-10-04 09:42:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:10,834 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-10-04 09:42:10,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:42:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-10-04 09:42:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 09:42:10,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:10,836 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1] [2018-10-04 09:42:10,836 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:10,836 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1980427149, now seen corresponding path program 50 times [2018-10-04 09:42:10,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:10,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:10,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:10,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:10,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:11,298 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:11,488 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:11,932 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-10-04 09:42:12,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:12,003 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 [2018-10-04 09:42:12,030 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:12,108 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:12,108 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:12,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2018-10-04 09:42:12,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:12,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:42:12,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:42:12,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:42:12,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:12,307 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 53 states. [2018-10-04 09:42:13,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:13,119 INFO L93 Difference]: Finished difference Result 315 states and 318 transitions. [2018-10-04 09:42:13,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:42:13,119 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-10-04 09:42:13,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:13,120 INFO L225 Difference]: With dead ends: 315 [2018-10-04 09:42:13,121 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 09:42:13,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 8 [2018-10-04 09:42:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 09:42:13,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 09:42:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 09:42:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 212 transitions. [2018-10-04 09:42:13,126 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 212 transitions. Word has length 206 [2018-10-04 09:42:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:13,126 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 212 transitions. [2018-10-04 09:42:13,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:42:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 212 transitions. [2018-10-04 09:42:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 09:42:13,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:13,128 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1] [2018-10-04 09:42:13,128 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:13,128 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash -311603481, now seen corresponding path program 51 times [2018-10-04 09:42:13,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:13,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:13,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:13,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:13,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:13,719 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:14,012 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:14,229 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-10-04 09:42:14,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:14,291 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 [2018-10-04 09:42:14,298 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:15,486 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 09:42:15,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:15,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 2652 trivial. 0 not checked. [2018-10-04 09:42:16,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:16,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:42:16,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:42:16,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:42:16,290 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:16,290 INFO L87 Difference]: Start difference. First operand 211 states and 212 transitions. Second operand 54 states. [2018-10-04 09:42:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:16,562 INFO L93 Difference]: Finished difference Result 321 states and 324 transitions. [2018-10-04 09:42:16,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:42:16,562 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-10-04 09:42:16,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:16,564 INFO L225 Difference]: With dead ends: 321 [2018-10-04 09:42:16,564 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 09:42:16,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 0.8s impTime 9 [2018-10-04 09:42:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 09:42:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 09:42:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 09:42:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2018-10-04 09:42:16,568 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 210 [2018-10-04 09:42:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:16,569 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2018-10-04 09:42:16,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:42:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2018-10-04 09:42:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 09:42:16,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:16,570 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1] [2018-10-04 09:42:16,570 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:16,571 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:16,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1905340581, now seen corresponding path program 52 times [2018-10-04 09:42:16,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:16,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:16,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:16,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:16,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:16,848 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:17,222 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:17,807 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-10-04 09:42:17,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:17,962 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 [2018-10-04 09:42:17,970 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:18,053 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:18,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:18,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5512 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2018-10-04 09:42:18,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:18,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:42:18,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:42:18,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:42:18,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:18,301 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand 55 states. [2018-10-04 09:42:18,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:18,691 INFO L93 Difference]: Finished difference Result 327 states and 330 transitions. [2018-10-04 09:42:18,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:42:18,691 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-10-04 09:42:18,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:18,692 INFO L225 Difference]: With dead ends: 327 [2018-10-04 09:42:18,693 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 09:42:18,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 10 [2018-10-04 09:42:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 09:42:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 09:42:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 09:42:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 220 transitions. [2018-10-04 09:42:18,717 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 220 transitions. Word has length 214 [2018-10-04 09:42:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:18,717 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 220 transitions. [2018-10-04 09:42:18,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:42:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 220 transitions. [2018-10-04 09:42:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 09:42:18,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:18,719 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1] [2018-10-04 09:42:18,719 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:18,719 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:18,719 INFO L82 PathProgramCache]: Analyzing trace with hash 880711119, now seen corresponding path program 53 times [2018-10-04 09:42:18,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:18,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:18,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:18,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:18,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:19,089 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:19,430 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:19,975 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-10-04 09:42:20,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:20,176 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:20,183 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:21,983 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 09:42:21,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:21,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2018-10-04 09:42:22,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:22,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:42:22,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:42:22,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:42:22,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:22,263 INFO L87 Difference]: Start difference. First operand 219 states and 220 transitions. Second operand 56 states. [2018-10-04 09:42:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:22,627 INFO L93 Difference]: Finished difference Result 333 states and 336 transitions. [2018-10-04 09:42:22,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:42:22,628 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-10-04 09:42:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:22,629 INFO L225 Difference]: With dead ends: 333 [2018-10-04 09:42:22,629 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 09:42:22,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 11 [2018-10-04 09:42:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 09:42:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 09:42:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 09:42:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2018-10-04 09:42:22,635 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 218 [2018-10-04 09:42:22,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:22,635 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2018-10-04 09:42:22,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:42:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2018-10-04 09:42:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 09:42:22,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:22,637 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1] [2018-10-04 09:42:22,637 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:22,637 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1453433411, now seen corresponding path program 54 times [2018-10-04 09:42:22,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:22,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:22,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:22,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:22,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:22,973 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:23,342 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:23,546 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-10-04 09:42:23,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:23,792 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:23,799 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:24,707 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 09:42:24,707 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:24,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-10-04 09:42:24,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:24,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:42:24,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:42:24,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:42:24,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:24,926 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand 57 states. [2018-10-04 09:42:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:25,334 INFO L93 Difference]: Finished difference Result 339 states and 342 transitions. [2018-10-04 09:42:25,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:42:25,335 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-10-04 09:42:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:25,336 INFO L225 Difference]: With dead ends: 339 [2018-10-04 09:42:25,336 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 09:42:25,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 12 [2018-10-04 09:42:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 09:42:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 09:42:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 09:42:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 228 transitions. [2018-10-04 09:42:25,344 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 228 transitions. Word has length 222 [2018-10-04 09:42:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:25,344 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 228 transitions. [2018-10-04 09:42:25,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:42:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 228 transitions. [2018-10-04 09:42:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 09:42:25,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:25,346 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1] [2018-10-04 09:42:25,346 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:25,346 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:25,346 INFO L82 PathProgramCache]: Analyzing trace with hash -614665033, now seen corresponding path program 55 times [2018-10-04 09:42:25,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:25,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:25,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:25,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:25,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:25,705 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:25,881 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:26,270 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-10-04 09:42:26,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:26,595 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 [2018-10-04 09:42:26,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:26,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-10-04 09:42:26,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:26,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:42:26,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:42:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:42:26,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:26,927 INFO L87 Difference]: Start difference. First operand 227 states and 228 transitions. Second operand 58 states. [2018-10-04 09:42:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:27,264 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2018-10-04 09:42:27,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:42:27,265 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-10-04 09:42:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:27,266 INFO L225 Difference]: With dead ends: 345 [2018-10-04 09:42:27,266 INFO L226 Difference]: Without dead ends: 231 [2018-10-04 09:42:27,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 13 [2018-10-04 09:42:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-04 09:42:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-04 09:42:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-04 09:42:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2018-10-04 09:42:27,273 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 226 [2018-10-04 09:42:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:27,273 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2018-10-04 09:42:27,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:42:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2018-10-04 09:42:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-04 09:42:27,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:27,274 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1] [2018-10-04 09:42:27,275 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:27,275 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:27,275 INFO L82 PathProgramCache]: Analyzing trace with hash -659190485, now seen corresponding path program 56 times [2018-10-04 09:42:27,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:27,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:27,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:27,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:27,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:27,640 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:28,039 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:28,326 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-10-04 09:42:28,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:28,675 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 [2018-10-04 09:42:28,682 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:28,786 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:28,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:28,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2018-10-04 09:42:29,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:29,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:42:29,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:42:29,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:42:29,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:29,461 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand 59 states. [2018-10-04 09:42:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:29,842 INFO L93 Difference]: Finished difference Result 351 states and 354 transitions. [2018-10-04 09:42:29,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:42:29,842 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-10-04 09:42:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:29,843 INFO L225 Difference]: With dead ends: 351 [2018-10-04 09:42:29,844 INFO L226 Difference]: Without dead ends: 235 [2018-10-04 09:42:29,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.0s impTime 14 [2018-10-04 09:42:29,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-04 09:42:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-04 09:42:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-04 09:42:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 236 transitions. [2018-10-04 09:42:29,847 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 236 transitions. Word has length 230 [2018-10-04 09:42:29,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:29,848 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 236 transitions. [2018-10-04 09:42:29,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:42:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 236 transitions. [2018-10-04 09:42:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-04 09:42:29,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:29,849 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1] [2018-10-04 09:42:29,849 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:29,849 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1412459423, now seen corresponding path program 57 times [2018-10-04 09:42:29,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:29,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:29,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:29,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:29,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:30,145 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:30,377 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:30,838 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-10-04 09:42:31,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:31,256 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 [2018-10-04 09:42:31,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:32,997 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 09:42:32,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:33,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2018-10-04 09:42:33,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:33,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:42:33,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:42:33,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:42:33,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:33,236 INFO L87 Difference]: Start difference. First operand 235 states and 236 transitions. Second operand 60 states. [2018-10-04 09:42:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:33,631 INFO L93 Difference]: Finished difference Result 357 states and 360 transitions. [2018-10-04 09:42:33,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:42:33,632 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-10-04 09:42:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:33,633 INFO L225 Difference]: With dead ends: 357 [2018-10-04 09:42:33,633 INFO L226 Difference]: Without dead ends: 239 [2018-10-04 09:42:33,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 15 [2018-10-04 09:42:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-04 09:42:33,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-04 09:42:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-04 09:42:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2018-10-04 09:42:33,638 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 234 [2018-10-04 09:42:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:33,638 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2018-10-04 09:42:33,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:42:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2018-10-04 09:42:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-04 09:42:33,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:33,639 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1] [2018-10-04 09:42:33,639 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:33,639 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash 47353875, now seen corresponding path program 58 times [2018-10-04 09:42:33,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:33,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:33,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:33,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:33,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:33,999 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:34,212 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:34,459 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-10-04 09:42:34,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:34,618 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:34,628 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:34,722 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:34,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:34,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3422 trivial. 0 not checked. [2018-10-04 09:42:34,961 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:34,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:42:34,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:42:34,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:42:34,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:34,962 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand 61 states. [2018-10-04 09:42:35,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:35,361 INFO L93 Difference]: Finished difference Result 363 states and 366 transitions. [2018-10-04 09:42:35,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:42:35,362 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-10-04 09:42:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:35,363 INFO L225 Difference]: With dead ends: 363 [2018-10-04 09:42:35,364 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 09:42:35,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 14 [2018-10-04 09:42:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 09:42:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-04 09:42:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-04 09:42:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 244 transitions. [2018-10-04 09:42:35,369 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 244 transitions. Word has length 238 [2018-10-04 09:42:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:35,369 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 244 transitions. [2018-10-04 09:42:35,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:42:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 244 transitions. [2018-10-04 09:42:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-04 09:42:35,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:35,371 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1] [2018-10-04 09:42:35,371 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:35,371 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 153156231, now seen corresponding path program 59 times [2018-10-04 09:42:35,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:35,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:35,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:35,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:35,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:35,676 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:35,883 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:36,130 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-10-04 09:42:36,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:36,221 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 [2018-10-04 09:42:36,229 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:38,788 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 09:42:38,788 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:38,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2018-10-04 09:42:39,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:39,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:42:39,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:42:39,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:42:39,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:39,186 INFO L87 Difference]: Start difference. First operand 243 states and 244 transitions. Second operand 62 states. [2018-10-04 09:42:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:39,655 INFO L93 Difference]: Finished difference Result 369 states and 372 transitions. [2018-10-04 09:42:39,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:42:39,655 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-10-04 09:42:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:39,656 INFO L225 Difference]: With dead ends: 369 [2018-10-04 09:42:39,657 INFO L226 Difference]: Without dead ends: 247 [2018-10-04 09:42:39,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 17 [2018-10-04 09:42:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-04 09:42:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-04 09:42:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-04 09:42:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2018-10-04 09:42:39,662 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 242 [2018-10-04 09:42:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:39,663 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2018-10-04 09:42:39,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:42:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2018-10-04 09:42:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-04 09:42:39,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:39,664 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1] [2018-10-04 09:42:39,664 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:39,665 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1155486981, now seen corresponding path program 60 times [2018-10-04 09:42:39,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:39,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:39,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:39,666 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:39,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:39,912 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:40,138 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:40,266 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-10-04 09:42:40,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:40,405 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:40,414 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:41,929 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 09:42:41,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:41,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 3660 trivial. 0 not checked. [2018-10-04 09:42:42,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:42,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:42:42,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:42:42,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:42:42,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:42,207 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand 63 states. [2018-10-04 09:42:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:42,601 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2018-10-04 09:42:42,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:42:42,602 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-10-04 09:42:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:42,603 INFO L225 Difference]: With dead ends: 375 [2018-10-04 09:42:42,603 INFO L226 Difference]: Without dead ends: 251 [2018-10-04 09:42:42,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 18 [2018-10-04 09:42:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-04 09:42:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-04 09:42:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-04 09:42:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 252 transitions. [2018-10-04 09:42:42,607 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 252 transitions. Word has length 246 [2018-10-04 09:42:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:42,607 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 252 transitions. [2018-10-04 09:42:42,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:42:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 252 transitions. [2018-10-04 09:42:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-04 09:42:42,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:42,608 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1] [2018-10-04 09:42:42,608 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:42,608 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:42,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1549181295, now seen corresponding path program 61 times [2018-10-04 09:42:42,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:42,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:42,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:42,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:42,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:43,048 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:43,271 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:43,602 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-10-04 09:42:43,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:43,944 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 [2018-10-04 09:42:43,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:44,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7564 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2018-10-04 09:42:44,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:44,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:42:44,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:42:44,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:42:44,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:44,481 INFO L87 Difference]: Start difference. First operand 251 states and 252 transitions. Second operand 64 states. [2018-10-04 09:42:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:45,036 INFO L93 Difference]: Finished difference Result 381 states and 384 transitions. [2018-10-04 09:42:45,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:42:45,036 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-10-04 09:42:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:45,038 INFO L225 Difference]: With dead ends: 381 [2018-10-04 09:42:45,038 INFO L226 Difference]: Without dead ends: 255 [2018-10-04 09:42:45,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 19 [2018-10-04 09:42:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-04 09:42:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-04 09:42:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-04 09:42:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2018-10-04 09:42:45,043 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 250 [2018-10-04 09:42:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:45,043 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2018-10-04 09:42:45,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:42:45,043 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2018-10-04 09:42:45,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-04 09:42:45,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:45,044 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1] [2018-10-04 09:42:45,044 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:45,044 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:45,044 INFO L82 PathProgramCache]: Analyzing trace with hash -540549661, now seen corresponding path program 62 times [2018-10-04 09:42:45,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:45,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:45,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:45,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:45,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:45,231 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:45,438 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:45,607 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-10-04 09:42:45,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:45,780 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 [2018-10-04 09:42:45,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:45,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:45,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:45,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2018-10-04 09:42:46,142 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:46,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:42:46,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:42:46,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:42:46,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:46,143 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand 65 states. [2018-10-04 09:42:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:46,562 INFO L93 Difference]: Finished difference Result 387 states and 390 transitions. [2018-10-04 09:42:46,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:42:46,562 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-10-04 09:42:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:46,564 INFO L225 Difference]: With dead ends: 387 [2018-10-04 09:42:46,564 INFO L226 Difference]: Without dead ends: 259 [2018-10-04 09:42:46,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 18 [2018-10-04 09:42:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-04 09:42:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-04 09:42:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-04 09:42:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 260 transitions. [2018-10-04 09:42:46,568 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 260 transitions. Word has length 254 [2018-10-04 09:42:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:46,569 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 260 transitions. [2018-10-04 09:42:46,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:42:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 260 transitions. [2018-10-04 09:42:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-04 09:42:46,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:46,570 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 1, 1, 1, 1] [2018-10-04 09:42:46,570 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:46,570 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:46,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1476829097, now seen corresponding path program 63 times [2018-10-04 09:42:46,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:46,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:46,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:46,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:46,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:46,749 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:46,970 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:47,107 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-10-04 09:42:47,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:47,281 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 [2018-10-04 09:42:47,292 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:49,689 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 09:42:49,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:49,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8064 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 4032 trivial. 0 not checked. [2018-10-04 09:42:49,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:49,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:42:49,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:42:49,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:42:49,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:49,990 INFO L87 Difference]: Start difference. First operand 259 states and 260 transitions. Second operand 66 states. [2018-10-04 09:42:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:50,429 INFO L93 Difference]: Finished difference Result 393 states and 396 transitions. [2018-10-04 09:42:50,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:42:50,429 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-10-04 09:42:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:50,430 INFO L225 Difference]: With dead ends: 393 [2018-10-04 09:42:50,431 INFO L226 Difference]: Without dead ends: 263 [2018-10-04 09:42:50,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 21 [2018-10-04 09:42:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-04 09:42:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-04 09:42:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-04 09:42:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2018-10-04 09:42:50,436 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 258 [2018-10-04 09:42:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:50,436 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2018-10-04 09:42:50,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:42:50,436 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2018-10-04 09:42:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-04 09:42:50,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:50,438 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 1, 1, 1, 1] [2018-10-04 09:42:50,438 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:50,438 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:50,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144203, now seen corresponding path program 64 times [2018-10-04 09:42:50,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:50,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:50,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:50,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:50,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:50,729 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:50,938 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:51,236 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-10-04 09:42:51,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:51,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:51,666 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:51,766 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:51,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:51,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2018-10-04 09:42:52,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:52,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:42:52,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:42:52,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:42:52,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:52,130 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand 67 states. [2018-10-04 09:42:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:52,678 INFO L93 Difference]: Finished difference Result 399 states and 402 transitions. [2018-10-04 09:42:52,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:42:52,678 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-10-04 09:42:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:52,680 INFO L225 Difference]: With dead ends: 399 [2018-10-04 09:42:52,680 INFO L226 Difference]: Without dead ends: 267 [2018-10-04 09:42:52,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 22 [2018-10-04 09:42:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-04 09:42:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-04 09:42:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-04 09:42:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-10-04 09:42:52,686 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 262 [2018-10-04 09:42:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:52,686 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-10-04 09:42:52,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:42:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-10-04 09:42:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-04 09:42:52,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:52,688 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 1, 1, 1, 1] [2018-10-04 09:42:52,688 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:52,688 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1043412799, now seen corresponding path program 65 times [2018-10-04 09:42:52,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:52,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:52,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:52,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:52,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:52,916 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:53,177 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:53,495 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-10-04 09:42:53,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:53,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:53,848 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:57,258 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 09:42:57,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:57,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2018-10-04 09:42:57,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:57,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:42:57,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:42:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:42:57,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:57,548 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 68 states. [2018-10-04 09:42:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:58,213 INFO L93 Difference]: Finished difference Result 405 states and 408 transitions. [2018-10-04 09:42:58,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:42:58,214 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-10-04 09:42:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:58,215 INFO L225 Difference]: With dead ends: 405 [2018-10-04 09:42:58,215 INFO L226 Difference]: Without dead ends: 271 [2018-10-04 09:42:58,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 23 [2018-10-04 09:42:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-04 09:42:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-04 09:42:58,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-04 09:42:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-10-04 09:42:58,220 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 266 [2018-10-04 09:42:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:58,220 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-10-04 09:42:58,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:42:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-10-04 09:42:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-04 09:42:58,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:58,222 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 1, 1, 1, 1] [2018-10-04 09:42:58,222 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:58,222 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:58,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1094612045, now seen corresponding path program 66 times [2018-10-04 09:42:58,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:58,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:58,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:58,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:58,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:58,436 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:58,595 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:58,872 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-10-04 09:42:59,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:59,307 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 [2018-10-04 09:42:59,314 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:01,111 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 09:43:01,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:01,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 4422 trivial. 0 not checked. [2018-10-04 09:43:01,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:01,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:43:01,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:43:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:43:01,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:01,388 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 69 states. [2018-10-04 09:43:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:01,990 INFO L93 Difference]: Finished difference Result 411 states and 414 transitions. [2018-10-04 09:43:01,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:43:01,991 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-10-04 09:43:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:01,992 INFO L225 Difference]: With dead ends: 411 [2018-10-04 09:43:01,992 INFO L226 Difference]: Without dead ends: 275 [2018-10-04 09:43:01,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 22 [2018-10-04 09:43:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-04 09:43:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-04 09:43:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-04 09:43:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-10-04 09:43:01,997 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 270 [2018-10-04 09:43:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:01,997 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-10-04 09:43:01,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:43:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-10-04 09:43:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-04 09:43:01,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:01,998 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 1, 1, 1, 1] [2018-10-04 09:43:01,999 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:01,999 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:01,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1764107815, now seen corresponding path program 67 times [2018-10-04 09:43:01,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:01,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:01,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:02,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:02,228 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:02,457 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:02,779 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:03,155 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-10-04 09:43:03,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:03,195 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 [2018-10-04 09:43:03,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:03,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2018-10-04 09:43:03,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:03,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:43:03,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:43:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:43:03,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:03,628 INFO L87 Difference]: Start difference. First operand 275 states and 276 transitions. Second operand 70 states. [2018-10-04 09:43:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:04,290 INFO L93 Difference]: Finished difference Result 417 states and 420 transitions. [2018-10-04 09:43:04,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:43:04,290 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-10-04 09:43:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:04,291 INFO L225 Difference]: With dead ends: 417 [2018-10-04 09:43:04,291 INFO L226 Difference]: Without dead ends: 279 [2018-10-04 09:43:04,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 8 [2018-10-04 09:43:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-04 09:43:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-04 09:43:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-04 09:43:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-10-04 09:43:04,297 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 274 [2018-10-04 09:43:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:04,297 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-10-04 09:43:04,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:43:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-10-04 09:43:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-04 09:43:04,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:04,299 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 1, 1, 1, 1] [2018-10-04 09:43:04,299 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:04,299 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 224659099, now seen corresponding path program 68 times [2018-10-04 09:43:04,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:04,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:04,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:04,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:04,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:04,491 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:04,989 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:05,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:05,756 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-10-04 09:43:05,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:05,825 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 [2018-10-04 09:43:05,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:43:05,944 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:43:05,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:05,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9384 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2018-10-04 09:43:06,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:06,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:43:06,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:43:06,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:43:06,222 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:06,222 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 71 states. [2018-10-04 09:43:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:06,922 INFO L93 Difference]: Finished difference Result 423 states and 426 transitions. [2018-10-04 09:43:06,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:43:06,923 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-04 09:43:06,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:06,924 INFO L225 Difference]: With dead ends: 423 [2018-10-04 09:43:06,924 INFO L226 Difference]: Without dead ends: 283 [2018-10-04 09:43:06,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 9 [2018-10-04 09:43:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-04 09:43:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-04 09:43:06,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-04 09:43:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 284 transitions. [2018-10-04 09:43:06,929 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 284 transitions. Word has length 278 [2018-10-04 09:43:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:06,929 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 284 transitions. [2018-10-04 09:43:06,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:43:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 284 transitions. [2018-10-04 09:43:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-04 09:43:06,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:06,930 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 1, 1, 1, 1] [2018-10-04 09:43:06,931 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:06,931 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:06,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1795173647, now seen corresponding path program 69 times [2018-10-04 09:43:06,931 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:06,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:06,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:06,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:07,089 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:07,310 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:07,447 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:07,683 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-10-04 09:43:07,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:07,773 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 [2018-10-04 09:43:07,780 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:43:11,200 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 09:43:11,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:11,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 4830 trivial. 0 not checked. [2018-10-04 09:43:11,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:11,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:43:11,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:43:11,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:43:11,480 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:11,480 INFO L87 Difference]: Start difference. First operand 283 states and 284 transitions. Second operand 72 states. [2018-10-04 09:43:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:12,017 INFO L93 Difference]: Finished difference Result 429 states and 432 transitions. [2018-10-04 09:43:12,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:43:12,018 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-10-04 09:43:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:12,019 INFO L225 Difference]: With dead ends: 429 [2018-10-04 09:43:12,019 INFO L226 Difference]: Without dead ends: 287 [2018-10-04 09:43:12,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 10 [2018-10-04 09:43:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-04 09:43:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-04 09:43:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-04 09:43:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2018-10-04 09:43:12,025 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 282 [2018-10-04 09:43:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:12,025 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2018-10-04 09:43:12,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:43:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2018-10-04 09:43:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-04 09:43:12,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:12,026 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 1, 1, 1, 1] [2018-10-04 09:43:12,026 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:12,026 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:12,027 INFO L82 PathProgramCache]: Analyzing trace with hash -251684477, now seen corresponding path program 70 times [2018-10-04 09:43:12,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:12,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:12,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:12,028 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:12,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:12,217 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:12,439 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:12,577 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:12,865 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-10-04 09:43:12,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:12,926 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 [2018-10-04 09:43:12,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:43:13,046 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:43:13,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:13,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2018-10-04 09:43:13,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:13,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:43:13,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:43:13,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:43:13,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:13,326 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand 73 states. [2018-10-04 09:43:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:13,913 INFO L93 Difference]: Finished difference Result 435 states and 438 transitions. [2018-10-04 09:43:13,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:43:13,914 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-10-04 09:43:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:13,915 INFO L225 Difference]: With dead ends: 435 [2018-10-04 09:43:13,916 INFO L226 Difference]: Without dead ends: 291 [2018-10-04 09:43:13,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 9 [2018-10-04 09:43:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-04 09:43:13,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-04 09:43:13,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-04 09:43:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 292 transitions. [2018-10-04 09:43:13,920 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 292 transitions. Word has length 286 [2018-10-04 09:43:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:13,921 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 292 transitions. [2018-10-04 09:43:13,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:43:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 292 transitions. [2018-10-04 09:43:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-04 09:43:13,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:13,922 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 1, 1, 1, 1] [2018-10-04 09:43:13,922 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:13,922 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:13,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2112310263, now seen corresponding path program 71 times [2018-10-04 09:43:13,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:13,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:13,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:13,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:13,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:14,130 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:14,352 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:14,677 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:15,458 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-10-04 09:43:15,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:15,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:15,640 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:43:20,930 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 09:43:20,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:20,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10224 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2018-10-04 09:43:21,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:21,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:43:21,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:43:21,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:43:21,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:21,525 INFO L87 Difference]: Start difference. First operand 291 states and 292 transitions. Second operand 74 states. [2018-10-04 09:43:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:22,361 INFO L93 Difference]: Finished difference Result 441 states and 444 transitions. [2018-10-04 09:43:22,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:43:22,361 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-10-04 09:43:22,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:22,363 INFO L225 Difference]: With dead ends: 441 [2018-10-04 09:43:22,363 INFO L226 Difference]: Without dead ends: 295 [2018-10-04 09:43:22,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 12 [2018-10-04 09:43:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-04 09:43:22,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-04 09:43:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-04 09:43:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2018-10-04 09:43:22,368 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 290 [2018-10-04 09:43:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:22,369 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2018-10-04 09:43:22,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:43:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2018-10-04 09:43:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-04 09:43:22,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:22,371 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 1, 1, 1, 1] [2018-10-04 09:43:22,371 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:22,371 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:22,371 INFO L82 PathProgramCache]: Analyzing trace with hash 532431979, now seen corresponding path program 72 times [2018-10-04 09:43:22,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:22,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:22,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:22,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:22,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:22,600 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:22,836 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:22,965 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:23,209 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-10-04 09:43:23,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:23,349 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 [2018-10-04 09:43:23,357 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:26,185 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 09:43:26,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:26,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2018-10-04 09:43:26,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:26,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:43:26,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:43:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:43:26,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:26,538 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand 75 states. [2018-10-04 09:43:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:27,107 INFO L93 Difference]: Finished difference Result 447 states and 450 transitions. [2018-10-04 09:43:27,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:43:27,107 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-10-04 09:43:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:27,109 INFO L225 Difference]: With dead ends: 447 [2018-10-04 09:43:27,110 INFO L226 Difference]: Without dead ends: 299 [2018-10-04 09:43:27,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 13 [2018-10-04 09:43:27,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-04 09:43:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-04 09:43:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-04 09:43:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 300 transitions. [2018-10-04 09:43:27,115 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 300 transitions. Word has length 294 [2018-10-04 09:43:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:27,115 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 300 transitions. [2018-10-04 09:43:27,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:43:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 300 transitions. [2018-10-04 09:43:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-04 09:43:27,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:27,117 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 1, 1, 1, 1] [2018-10-04 09:43:27,118 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:27,118 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:27,118 INFO L82 PathProgramCache]: Analyzing trace with hash -737967393, now seen corresponding path program 73 times [2018-10-04 09:43:27,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:27,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:27,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:27,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:27,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:27,297 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:27,506 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:27,752 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:27,931 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-10-04 09:43:28,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:28,052 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 [2018-10-04 09:43:28,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:28,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 5402 trivial. 0 not checked. [2018-10-04 09:43:28,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:28,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:43:28,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:43:28,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:43:28,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:28,468 INFO L87 Difference]: Start difference. First operand 299 states and 300 transitions. Second operand 76 states. [2018-10-04 09:43:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:29,096 INFO L93 Difference]: Finished difference Result 453 states and 456 transitions. [2018-10-04 09:43:29,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:43:29,096 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-10-04 09:43:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:29,098 INFO L225 Difference]: With dead ends: 453 [2018-10-04 09:43:29,098 INFO L226 Difference]: Without dead ends: 303 [2018-10-04 09:43:29,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 14 [2018-10-04 09:43:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-04 09:43:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-04 09:43:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-04 09:43:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2018-10-04 09:43:29,103 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 298 [2018-10-04 09:43:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:29,104 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2018-10-04 09:43:29,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:43:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2018-10-04 09:43:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-04 09:43:29,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:29,106 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 1, 1, 1, 1] [2018-10-04 09:43:29,106 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:29,106 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1203898195, now seen corresponding path program 74 times [2018-10-04 09:43:29,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:29,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:29,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:29,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:29,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:29,297 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:29,428 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:29,671 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:30,076 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-10-04 09:43:30,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:30,445 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 [2018-10-04 09:43:30,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:43:30,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:43:30,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:30,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2018-10-04 09:43:30,895 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:30,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:43:30,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:43:30,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:43:30,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:30,897 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand 77 states. [2018-10-04 09:43:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:31,658 INFO L93 Difference]: Finished difference Result 459 states and 462 transitions. [2018-10-04 09:43:31,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:43:31,659 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-10-04 09:43:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:31,660 INFO L225 Difference]: With dead ends: 459 [2018-10-04 09:43:31,660 INFO L226 Difference]: Without dead ends: 307 [2018-10-04 09:43:31,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 13 [2018-10-04 09:43:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-04 09:43:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-04 09:43:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-04 09:43:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 308 transitions. [2018-10-04 09:43:31,666 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 308 transitions. Word has length 302 [2018-10-04 09:43:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:31,666 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 308 transitions. [2018-10-04 09:43:31,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:43:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 308 transitions. [2018-10-04 09:43:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-04 09:43:31,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:31,668 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 1, 1, 1, 1] [2018-10-04 09:43:31,668 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:31,668 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:31,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1753427513, now seen corresponding path program 75 times [2018-10-04 09:43:31,669 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:31,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:31,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:31,669 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:31,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:31,872 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:32,018 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:32,302 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:32,835 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-10-04 09:43:33,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:33,135 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 [2018-10-04 09:43:33,143 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:43:37,819 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 09:43:37,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:37,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 5700 trivial. 0 not checked. [2018-10-04 09:43:38,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:38,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:43:38,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:43:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:43:38,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:38,124 INFO L87 Difference]: Start difference. First operand 307 states and 308 transitions. Second operand 78 states. [2018-10-04 09:43:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:39,009 INFO L93 Difference]: Finished difference Result 465 states and 468 transitions. [2018-10-04 09:43:39,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:43:39,010 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-10-04 09:43:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:39,011 INFO L225 Difference]: With dead ends: 465 [2018-10-04 09:43:39,012 INFO L226 Difference]: Without dead ends: 311 [2018-10-04 09:43:39,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 16 [2018-10-04 09:43:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-04 09:43:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-04 09:43:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-04 09:43:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2018-10-04 09:43:39,016 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 306 [2018-10-04 09:43:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:39,016 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2018-10-04 09:43:39,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:43:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2018-10-04 09:43:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-04 09:43:39,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:39,018 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 1, 1, 1, 1] [2018-10-04 09:43:39,018 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:39,018 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 255386171, now seen corresponding path program 76 times [2018-10-04 09:43:39,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:39,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:39,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:39,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:39,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:39,189 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:39,446 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:39,622 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:40,142 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-10-04 09:43:40,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:40,690 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 [2018-10-04 09:43:40,697 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:43:40,818 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:43:40,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:40,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 5852 trivial. 0 not checked. [2018-10-04 09:43:41,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:41,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:43:41,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:43:41,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:43:41,124 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:41,124 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand 79 states. [2018-10-04 09:43:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:42,013 INFO L93 Difference]: Finished difference Result 471 states and 474 transitions. [2018-10-04 09:43:42,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:43:42,014 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-10-04 09:43:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:42,015 INFO L225 Difference]: With dead ends: 471 [2018-10-04 09:43:42,015 INFO L226 Difference]: Without dead ends: 315 [2018-10-04 09:43:42,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 17 [2018-10-04 09:43:42,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-04 09:43:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-04 09:43:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-04 09:43:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 316 transitions. [2018-10-04 09:43:42,020 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 316 transitions. Word has length 310 [2018-10-04 09:43:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:42,020 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 316 transitions. [2018-10-04 09:43:42,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:43:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 316 transitions. [2018-10-04 09:43:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-04 09:43:42,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:42,022 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 1, 1, 1, 1] [2018-10-04 09:43:42,022 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:42,022 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:42,022 INFO L82 PathProgramCache]: Analyzing trace with hash -361023313, now seen corresponding path program 77 times [2018-10-04 09:43:42,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:42,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:42,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:42,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:42,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:42,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:42,329 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:42,545 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:43,061 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-10-04 09:43:43,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:43,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:43,473 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:43:53,111 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 09:43:53,112 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:53,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12012 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2018-10-04 09:43:53,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:53,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:43:53,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:43:53,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:43:53,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:53,436 INFO L87 Difference]: Start difference. First operand 315 states and 316 transitions. Second operand 80 states. [2018-10-04 09:43:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:54,357 INFO L93 Difference]: Finished difference Result 477 states and 480 transitions. [2018-10-04 09:43:54,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:43:54,357 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-10-04 09:43:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:54,358 INFO L225 Difference]: With dead ends: 477 [2018-10-04 09:43:54,358 INFO L226 Difference]: Without dead ends: 319 [2018-10-04 09:43:54,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 18 [2018-10-04 09:43:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-04 09:43:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-04 09:43:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-04 09:43:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2018-10-04 09:43:54,364 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 314 [2018-10-04 09:43:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:54,364 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2018-10-04 09:43:54,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:43:54,364 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2018-10-04 09:43:54,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-04 09:43:54,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:54,365 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 1, 1, 1, 1] [2018-10-04 09:43:54,366 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:54,366 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:54,366 INFO L82 PathProgramCache]: Analyzing trace with hash 340317475, now seen corresponding path program 78 times [2018-10-04 09:43:54,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:54,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:54,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:54,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:54,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:54,563 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:54,771 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:54,908 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:55,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-10-04 09:43:55,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:55,429 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 [2018-10-04 09:43:55,437 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:58,939 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 09:43:58,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:58,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 6162 trivial. 0 not checked. [2018-10-04 09:43:59,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:59,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:43:59,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:43:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:43:59,276 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:59,276 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand 81 states. [2018-10-04 09:44:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:00,002 INFO L93 Difference]: Finished difference Result 483 states and 486 transitions. [2018-10-04 09:44:00,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:44:00,002 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-10-04 09:44:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:00,004 INFO L225 Difference]: With dead ends: 483 [2018-10-04 09:44:00,004 INFO L226 Difference]: Without dead ends: 323 [2018-10-04 09:44:00,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 17 [2018-10-04 09:44:00,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-04 09:44:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-04 09:44:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-04 09:44:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 324 transitions. [2018-10-04 09:44:00,009 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 324 transitions. Word has length 318 [2018-10-04 09:44:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:00,009 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 324 transitions. [2018-10-04 09:44:00,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:44:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 324 transitions. [2018-10-04 09:44:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-04 09:44:00,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:00,011 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 1, 1, 1, 1] [2018-10-04 09:44:00,011 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:00,011 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash -416893033, now seen corresponding path program 79 times [2018-10-04 09:44:00,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:00,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:00,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:00,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:00,185 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:00,409 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:00,703 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:01,467 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-10-04 09:44:01,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:01,624 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 [2018-10-04 09:44:01,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:01,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 6320 trivial. 0 not checked. [2018-10-04 09:44:02,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:02,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:44:02,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:44:02,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:44:02,104 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:02,104 INFO L87 Difference]: Start difference. First operand 323 states and 324 transitions. Second operand 82 states. [2018-10-04 09:44:03,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:03,100 INFO L93 Difference]: Finished difference Result 489 states and 492 transitions. [2018-10-04 09:44:03,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:44:03,100 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-10-04 09:44:03,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:03,101 INFO L225 Difference]: With dead ends: 489 [2018-10-04 09:44:03,102 INFO L226 Difference]: Without dead ends: 327 [2018-10-04 09:44:03,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 20 [2018-10-04 09:44:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-04 09:44:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-04 09:44:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-04 09:44:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-10-04 09:44:03,107 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 322 [2018-10-04 09:44:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:03,107 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-10-04 09:44:03,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:44:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-10-04 09:44:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-04 09:44:03,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:03,109 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 1, 1, 1, 1] [2018-10-04 09:44:03,109 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:03,109 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash -317071349, now seen corresponding path program 80 times [2018-10-04 09:44:03,109 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:03,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:03,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:03,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:03,296 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:03,510 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:03,821 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:04,362 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-10-04 09:44:04,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:04,506 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 [2018-10-04 09:44:04,513 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:04,638 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:04,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:04,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 12960 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2018-10-04 09:44:04,990 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:04,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:44:04,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:44:04,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:44:04,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:04,992 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 83 states. [2018-10-04 09:44:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:05,996 INFO L93 Difference]: Finished difference Result 495 states and 498 transitions. [2018-10-04 09:44:05,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:44:05,996 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-10-04 09:44:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:05,997 INFO L225 Difference]: With dead ends: 495 [2018-10-04 09:44:05,997 INFO L226 Difference]: Without dead ends: 331 [2018-10-04 09:44:05,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 21 [2018-10-04 09:44:05,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-04 09:44:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-04 09:44:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-04 09:44:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 332 transitions. [2018-10-04 09:44:06,002 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 332 transitions. Word has length 326 [2018-10-04 09:44:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:06,002 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 332 transitions. [2018-10-04 09:44:06,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:44:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 332 transitions. [2018-10-04 09:44:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-04 09:44:06,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:06,003 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 1, 1, 1, 1] [2018-10-04 09:44:06,003 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:06,004 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:06,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1616425345, now seen corresponding path program 81 times [2018-10-04 09:44:06,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:06,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:06,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:06,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:06,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:06,336 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:06,507 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:06,648 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:07,492 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-10-04 09:44:07,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:07,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:07,843 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:14,127 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 09:44:14,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:14,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13284 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2018-10-04 09:44:14,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:14,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:44:14,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:44:14,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:44:14,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:14,481 INFO L87 Difference]: Start difference. First operand 331 states and 332 transitions. Second operand 84 states. [2018-10-04 09:44:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:15,320 INFO L93 Difference]: Finished difference Result 501 states and 504 transitions. [2018-10-04 09:44:15,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:44:15,320 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-10-04 09:44:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:15,321 INFO L225 Difference]: With dead ends: 501 [2018-10-04 09:44:15,321 INFO L226 Difference]: Without dead ends: 335 [2018-10-04 09:44:15,322 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 22 [2018-10-04 09:44:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-04 09:44:15,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-04 09:44:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-04 09:44:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2018-10-04 09:44:15,326 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 330 [2018-10-04 09:44:15,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:15,326 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2018-10-04 09:44:15,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:44:15,326 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2018-10-04 09:44:15,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-04 09:44:15,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:15,328 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 1, 1, 1, 1] [2018-10-04 09:44:15,328 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:15,328 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:15,328 INFO L82 PathProgramCache]: Analyzing trace with hash 668205811, now seen corresponding path program 82 times [2018-10-04 09:44:15,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:15,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:15,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:15,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:15,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:15,522 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:15,646 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:15,899 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:16,666 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-10-04 09:44:17,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:17,173 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 [2018-10-04 09:44:17,182 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:17,309 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:17,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:17,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13612 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2018-10-04 09:44:17,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:17,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:44:17,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:44:17,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:44:17,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:17,636 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand 85 states. [2018-10-04 09:44:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:18,860 INFO L93 Difference]: Finished difference Result 507 states and 510 transitions. [2018-10-04 09:44:18,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:44:18,860 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-10-04 09:44:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:18,862 INFO L225 Difference]: With dead ends: 507 [2018-10-04 09:44:18,862 INFO L226 Difference]: Without dead ends: 339 [2018-10-04 09:44:18,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 23 [2018-10-04 09:44:18,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-04 09:44:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-04 09:44:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-04 09:44:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 340 transitions. [2018-10-04 09:44:18,868 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 340 transitions. Word has length 334 [2018-10-04 09:44:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:18,868 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 340 transitions. [2018-10-04 09:44:18,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:44:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 340 transitions. [2018-10-04 09:44:18,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-04 09:44:18,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:18,870 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 1, 1, 1, 1] [2018-10-04 09:44:18,870 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:18,870 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash 505740647, now seen corresponding path program 83 times [2018-10-04 09:44:18,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:18,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:18,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:18,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:18,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:19,097 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:19,273 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:19,451 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:19,972 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-10-04 09:44:20,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:20,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:20,601 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:29,454 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 09:44:29,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:29,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2018-10-04 09:44:29,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:29,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:44:29,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:44:29,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:44:29,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:29,803 INFO L87 Difference]: Start difference. First operand 339 states and 340 transitions. Second operand 86 states. [2018-10-04 09:44:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:30,939 INFO L93 Difference]: Finished difference Result 513 states and 516 transitions. [2018-10-04 09:44:30,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:44:30,939 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-10-04 09:44:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:30,941 INFO L225 Difference]: With dead ends: 513 [2018-10-04 09:44:30,941 INFO L226 Difference]: Without dead ends: 343 [2018-10-04 09:44:30,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 24 [2018-10-04 09:44:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-04 09:44:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-04 09:44:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-04 09:44:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2018-10-04 09:44:30,946 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 338 [2018-10-04 09:44:30,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:30,947 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2018-10-04 09:44:30,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:44:30,947 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2018-10-04 09:44:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-04 09:44:30,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:30,948 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 1, 1, 1, 1] [2018-10-04 09:44:30,948 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:30,948 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:30,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1251950043, now seen corresponding path program 84 times [2018-10-04 09:44:30,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:30,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:30,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:30,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:30,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:31,191 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:31,408 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:31,946 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:32,464 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:32,633 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-10-04 09:44:32,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:32,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:32,697 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:37,408 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-04 09:44:37,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:37,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2018-10-04 09:44:37,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:37,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:44:37,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:44:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:44:37,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:37,847 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand 87 states. [2018-10-04 09:44:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:38,923 INFO L93 Difference]: Finished difference Result 519 states and 522 transitions. [2018-10-04 09:44:38,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:44:38,923 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-10-04 09:44:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:38,924 INFO L225 Difference]: With dead ends: 519 [2018-10-04 09:44:38,924 INFO L226 Difference]: Without dead ends: 347 [2018-10-04 09:44:38,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 8 [2018-10-04 09:44:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-04 09:44:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-04 09:44:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-04 09:44:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 348 transitions. [2018-10-04 09:44:38,929 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 348 transitions. Word has length 342 [2018-10-04 09:44:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:38,930 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 348 transitions. [2018-10-04 09:44:38,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:44:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 348 transitions. [2018-10-04 09:44:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-04 09:44:38,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:38,932 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 1, 1, 1, 1] [2018-10-04 09:44:38,932 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:38,932 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1690813519, now seen corresponding path program 85 times [2018-10-04 09:44:38,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:38,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:38,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:39,123 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:39,321 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:39,621 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:40,085 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:40,656 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-10-04 09:44:40,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:40,755 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 [2018-10-04 09:44:40,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:40,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2018-10-04 09:44:41,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:41,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:44:41,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:44:41,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:44:41,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:41,254 INFO L87 Difference]: Start difference. First operand 347 states and 348 transitions. Second operand 88 states. [2018-10-04 09:44:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:42,402 INFO L93 Difference]: Finished difference Result 525 states and 528 transitions. [2018-10-04 09:44:42,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:44:42,402 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-10-04 09:44:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:42,404 INFO L225 Difference]: With dead ends: 525 [2018-10-04 09:44:42,404 INFO L226 Difference]: Without dead ends: 351 [2018-10-04 09:44:42,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 9 [2018-10-04 09:44:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-04 09:44:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-04 09:44:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-04 09:44:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2018-10-04 09:44:42,410 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 346 [2018-10-04 09:44:42,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:42,411 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2018-10-04 09:44:42,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:44:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2018-10-04 09:44:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-04 09:44:42,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:42,412 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 1, 1, 1, 1] [2018-10-04 09:44:42,413 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:42,413 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash -744255293, now seen corresponding path program 86 times [2018-10-04 09:44:42,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:42,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:42,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:42,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:42,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:42,621 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:42,835 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:42,965 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:43,238 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:43,642 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-10-04 09:44:43,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:43,775 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:43,783 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:43,927 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:43,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:43,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14964 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2018-10-04 09:44:44,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:44,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:44:44,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:44:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:44:44,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:44,273 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand 89 states. [2018-10-04 09:44:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:45,241 INFO L93 Difference]: Finished difference Result 531 states and 534 transitions. [2018-10-04 09:44:45,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:44:45,241 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-10-04 09:44:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:45,243 INFO L225 Difference]: With dead ends: 531 [2018-10-04 09:44:45,243 INFO L226 Difference]: Without dead ends: 355 [2018-10-04 09:44:45,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 10 [2018-10-04 09:44:45,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-04 09:44:45,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-04 09:44:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-04 09:44:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 356 transitions. [2018-10-04 09:44:45,248 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 356 transitions. Word has length 350 [2018-10-04 09:44:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:45,248 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 356 transitions. [2018-10-04 09:44:45,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:44:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 356 transitions. [2018-10-04 09:44:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-04 09:44:45,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:45,249 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 1, 1, 1, 1] [2018-10-04 09:44:45,250 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:45,250 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:45,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1840751415, now seen corresponding path program 87 times [2018-10-04 09:44:45,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:45,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:45,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:45,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:45,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:45,464 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:45,606 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:45,792 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:46,143 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:46,602 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-10-04 09:44:46,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:46,756 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 [2018-10-04 09:44:46,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:54,901 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-04 09:44:54,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:54,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15312 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2018-10-04 09:44:55,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:55,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:44:55,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:44:55,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:44:55,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:55,263 INFO L87 Difference]: Start difference. First operand 355 states and 356 transitions. Second operand 90 states. [2018-10-04 09:44:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:56,321 INFO L93 Difference]: Finished difference Result 537 states and 540 transitions. [2018-10-04 09:44:56,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:44:56,321 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-10-04 09:44:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:56,323 INFO L225 Difference]: With dead ends: 537 [2018-10-04 09:44:56,323 INFO L226 Difference]: Without dead ends: 359 [2018-10-04 09:44:56,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 11 [2018-10-04 09:44:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-04 09:44:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-04 09:44:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-04 09:44:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2018-10-04 09:44:56,328 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 354 [2018-10-04 09:44:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:56,329 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2018-10-04 09:44:56,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:44:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2018-10-04 09:44:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-04 09:44:56,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:56,330 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 1, 1, 1, 1] [2018-10-04 09:44:56,330 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:56,330 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash 956890027, now seen corresponding path program 88 times [2018-10-04 09:44:56,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:56,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:56,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:56,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:56,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:56,520 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:56,746 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:56,919 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:57,685 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:58,307 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-10-04 09:44:58,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:58,549 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 [2018-10-04 09:44:58,555 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:58,694 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:58,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:58,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 7832 trivial. 0 not checked. [2018-10-04 09:44:59,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:59,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:44:59,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:44:59,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:44:59,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:59,053 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand 91 states. [2018-10-04 09:45:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:00,384 INFO L93 Difference]: Finished difference Result 543 states and 546 transitions. [2018-10-04 09:45:00,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:45:00,385 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-10-04 09:45:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:00,386 INFO L225 Difference]: With dead ends: 543 [2018-10-04 09:45:00,387 INFO L226 Difference]: Without dead ends: 363 [2018-10-04 09:45:00,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 12 [2018-10-04 09:45:00,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-04 09:45:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-04 09:45:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-04 09:45:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 364 transitions. [2018-10-04 09:45:00,392 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 364 transitions. Word has length 358 [2018-10-04 09:45:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:00,392 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 364 transitions. [2018-10-04 09:45:00,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:45:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 364 transitions. [2018-10-04 09:45:00,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-04 09:45:00,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:00,394 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 89, 89, 1, 1, 1, 1] [2018-10-04 09:45:00,394 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:00,394 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:00,394 INFO L82 PathProgramCache]: Analyzing trace with hash 723294751, now seen corresponding path program 89 times [2018-10-04 09:45:00,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:00,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:00,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:00,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:00,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:45:00,806 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:45:00,944 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:45:01,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:45:01,603 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:02,120 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2018-10-04 09:45:02,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:45:02,423 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 [2018-10-04 09:45:02,430 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... [2018-10-04 09:45:14,305 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-04 09:45:14,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:14,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:14,327 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-04 09:45:14,528 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:45:14,528 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:45:14,533 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:45:14,533 INFO L202 PluginConnector]: Adding new model array3.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:45:14 BoogieIcfgContainer [2018-10-04 09:45:14,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:45:14,534 INFO L168 Benchmark]: Toolchain (without parser) took 249734.16 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.3 MB). Free memory was 1.5 GB in the beginning and 985.2 MB in the end (delta: 489.9 MB). Peak memory consumption was 517.2 MB. Max. memory is 7.1 GB. [2018-10-04 09:45:14,536 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:45:14,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.70 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. [2018-10-04 09:45:14,537 INFO L168 Benchmark]: Boogie Preprocessor took 21.73 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. [2018-10-04 09:45:14,538 INFO L168 Benchmark]: RCFGBuilder took 374.36 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. [2018-10-04 09:45:14,538 INFO L168 Benchmark]: TraceAbstraction took 249290.60 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.3 MB). Free memory was 1.5 GB in the beginning and 985.2 MB in the end (delta: 468.8 MB). Peak memory consumption was 496.0 MB. Max. memory is 7.1 GB. [2018-10-04 09:45:14,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.70 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 21.73 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 374.36 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 249290.60 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.3 MB). Free memory was 1.5 GB in the beginning and 985.2 MB in the end (delta: 468.8 MB). Peak memory consumption was 496.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 56). Cancelled while BasicCegarLoop was analyzing trace of length 363 with TraceHistMax 90, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 249.2s OverallTime, 90 OverallIterations, 90 TraceHistogramMax, 36.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 534 SDtfs, 7284 SDslu, 10030 SDs, 0 SdLazy, 10208 SolverSat, 7553 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20198 GetRequests, 16193 SyntacticMatches, 0 SemanticMatches, 4005 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=363occurred in iteration=89, 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: 0.4s AutomataMinimizationTime, 89 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.5s SsaConstructionTime, 85.5s SatisfiabilityAnalysisTime, 105.0s InterpolantComputationTime, 32390 NumberOfCodeBlocks, 32390 NumberOfCodeBlocksAsserted, 2128 NumberOfCheckSat, 32213 ConstructedInterpolants, 0 QuantifiedInterpolants, 15390013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48488 ConjunctsInSsa, 4092 ConjunctsInUnsatCore, 177 InterpolantComputations, 1 PerfectInterpolantSequences, 469920/939840 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/array3.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-45-14-557.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/array3.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-45-14-557.csv Completed graceful shutdown