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/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:04:03,081 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:04:03,083 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:04:03,095 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:04:03,095 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:04:03,096 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:04:03,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:04:03,100 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:04:03,102 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:04:03,103 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:04:03,104 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-03 09:04:03,133 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-03 09:04:03,150 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:04:03,150 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:04:03,151 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:04:03,151 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:04:03,152 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:04:03,152 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:04:03,153 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:04:03,153 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:04:03,153 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:04:03,153 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:04:03,154 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:04:03,154 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:04:03,154 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:04:03,155 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:04:03,155 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:04:03,155 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:04:03,155 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:04:03,156 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:04:03,156 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:04:03,156 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:04:03,157 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:04:03,157 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:04:03,157 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:04:03,157 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:04:03,158 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:04:03,158 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:04:03,158 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:04:03,158 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:04:03,159 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:04:03,159 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:04:03,159 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:04:03,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:04:03,224 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:04:03,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:04:03,229 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:04:03,229 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:04:03,230 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-03 09:04:03,230 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-03 09:04:03,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:04:03,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:04:03,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:04:03,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:04:03,290 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:04:03,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:04:03,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:04:03,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:04:03,332 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:04:03,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... [2018-10-03 09:04:03,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:04:03,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:04:03,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:04:03,353 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:04:03,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:04:03,426 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-03 09:04:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:04:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:04:03,666 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:04:03,667 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:04:03 BoogieIcfgContainer [2018-10-03 09:04:03,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:04:03,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:04:03,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:04:03,674 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:04:03,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:04:03" (1/2) ... [2018-10-03 09:04:03,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519dd492 and model type count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:04:03, skipping insertion in model container [2018-10-03 09:04:03,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:04:03" (2/2) ... [2018-10-03 09:04:03,679 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-03 09:04:03,690 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:04:03,699 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:04:03,759 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:04:03,760 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:04:03,760 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:04:03,760 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:04:03,761 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:04:03,761 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:04:03,761 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:04:03,761 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:04:03,762 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:04:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-03 09:04:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-03 09:04:03,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:03,786 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-03 09:04:03,787 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:03,795 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-10-03 09:04:03,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:03,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:03,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:03,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:03,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:03,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:04:03,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:04:03,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:04:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:04:03,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:03,988 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-03 09:04:04,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:04,020 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-03 09:04:04,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:04:04,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-03 09:04:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:04,033 INFO L225 Difference]: With dead ends: 9 [2018-10-03 09:04:04,034 INFO L226 Difference]: Without dead ends: 5 [2018-10-03 09:04:04,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:04:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-03 09:04:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-03 09:04:04,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-03 09:04:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-03 09:04:04,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-03 09:04:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:04,067 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-03 09:04:04,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:04:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-03 09:04:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:04:04,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:04,068 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:04:04,068 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:04,068 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-10-03 09:04:04,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:04,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:04,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:04,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:04,214 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:04,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:04,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:04:04,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:04:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:04:04,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:04,333 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-03 09:04:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:04,391 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-03 09:04:04,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:04:04,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-03 09:04:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:04,393 INFO L225 Difference]: With dead ends: 8 [2018-10-03 09:04:04,393 INFO L226 Difference]: Without dead ends: 6 [2018-10-03 09:04:04,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-03 09:04:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-03 09:04:04,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-03 09:04:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-03 09:04:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-03 09:04:04,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-03 09:04:04,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:04,398 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-03 09:04:04,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:04:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-03 09:04:04,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-03 09:04:04,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:04,399 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-03 09:04:04,399 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:04,399 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:04,400 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-10-03 09:04:04,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:04,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:04,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:04,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:04,527 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:04,538 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:04,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:04,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:04,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:04,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:04:04,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:04:04,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:04:04,623 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:04,623 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-03 09:04:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:04,641 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-03 09:04:04,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:04:04,641 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-03 09:04:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:04,642 INFO L225 Difference]: With dead ends: 9 [2018-10-03 09:04:04,642 INFO L226 Difference]: Without dead ends: 7 [2018-10-03 09:04:04,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:04:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-03 09:04:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-03 09:04:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:04:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:04:04,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-03 09:04:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:04,646 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:04:04,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:04:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:04:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:04:04,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:04,647 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-03 09:04:04,647 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:04,648 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:04,648 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-10-03 09:04:04,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:04,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:04,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:04,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:04,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:04,790 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:04,825 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-03 09:04:04,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:04,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:04,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:04:04,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:04:04,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:04:04,880 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:04,880 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-03 09:04:04,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:04,944 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-03 09:04:04,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:04:04,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-03 09:04:04,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:04,945 INFO L225 Difference]: With dead ends: 10 [2018-10-03 09:04:04,946 INFO L226 Difference]: Without dead ends: 8 [2018-10-03 09:04:04,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-03 09:04:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-03 09:04:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-03 09:04:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-03 09:04:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-03 09:04:04,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-03 09:04:04,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:04,949 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-03 09:04:04,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:04:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-03 09:04:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:04:04,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:04,950 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-03 09:04:04,950 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:04,950 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:04,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-10-03 09:04:04,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:04,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:04,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:04,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:05,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:05,260 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:05,284 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:05,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:05,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:05,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:04:05,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:04:05,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:04:05,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:05,347 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-03 09:04:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:05,378 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-03 09:04:05,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:04:05,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-03 09:04:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:05,380 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:04:05,380 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:04:05,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 5 [2018-10-03 09:04:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:04:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:04:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:04:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:04:05,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-03 09:04:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:05,384 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:04:05,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:04:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:04:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:04:05,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:05,385 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-03 09:04:05,385 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:05,385 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:05,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-10-03 09:04:05,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:05,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:05,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:05,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:05,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:05,673 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:05,690 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-03 09:04:05,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:05,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:05,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:04:05,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:04:05,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:04:05,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:05,746 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-03 09:04:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:05,783 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-03 09:04:05,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:04:05,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-03 09:04:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:05,784 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:04:05,784 INFO L226 Difference]: Without dead ends: 10 [2018-10-03 09:04:05,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6 [2018-10-03 09:04:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-03 09:04:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-03 09:04:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-03 09:04:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-03 09:04:05,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-03 09:04:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:05,789 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-03 09:04:05,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:04:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-03 09:04:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-03 09:04:05,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:05,790 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-03 09:04:05,790 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:05,790 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:05,790 INFO L82 PathProgramCache]: Analyzing trace with hash 218072033, now seen corresponding path program 6 times [2018-10-03 09:04:05,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:05,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:05,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:05,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:05,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:05,991 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:06,026 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-03 09:04:06,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:06,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:06,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:06,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:04:06,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:04:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:04:06,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:06,136 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-03 09:04:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:06,289 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-03 09:04:06,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:04:06,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-03 09:04:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:06,290 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:04:06,291 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:04:06,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 7 [2018-10-03 09:04:06,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:04:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:04:06,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:04:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-03 09:04:06,294 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-03 09:04:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:06,294 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-03 09:04:06,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:04:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-03 09:04:06,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:04:06,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:06,296 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-03 09:04:06,296 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:06,296 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:06,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1829703544, now seen corresponding path program 7 times [2018-10-03 09:04:06,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:06,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:06,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:06,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:06,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:06,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:06,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:06,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:06,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:06,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:06,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:06,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:04:06,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:04:06,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:04:06,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:06,912 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-03 09:04:06,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:06,945 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-03 09:04:06,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:04:06,945 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-03 09:04:06,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:06,946 INFO L225 Difference]: With dead ends: 14 [2018-10-03 09:04:06,946 INFO L226 Difference]: Without dead ends: 12 [2018-10-03 09:04:06,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime 8 [2018-10-03 09:04:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-03 09:04:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-03 09:04:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-03 09:04:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-03 09:04:06,950 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-03 09:04:06,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:06,950 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-03 09:04:06,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:04:06,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-03 09:04:06,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-03 09:04:06,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:06,951 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-03 09:04:06,951 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:06,951 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -886236991, now seen corresponding path program 8 times [2018-10-03 09:04:06,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:06,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:06,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:06,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:06,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:07,150 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:07,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:07,184 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:07,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:07,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:07,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:04:07,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:04:07,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:04:07,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:07,282 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-03 09:04:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:07,324 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-03 09:04:07,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:04:07,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-03 09:04:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:07,329 INFO L225 Difference]: With dead ends: 15 [2018-10-03 09:04:07,329 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:04:07,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-03 09:04:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:04:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:04:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:04:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-03 09:04:07,332 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-03 09:04:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:07,333 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-03 09:04:07,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:04:07,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-03 09:04:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:04:07,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:07,334 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-03 09:04:07,334 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:07,334 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:07,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1703544920, now seen corresponding path program 9 times [2018-10-03 09:04:07,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:07,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:07,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:07,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:07,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:07,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:07,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:07,573 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-03 09:04:07,573 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:07,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:07,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:04:07,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:04:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:04:07,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:07,636 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-03 09:04:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:07,685 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-03 09:04:07,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:04:07,685 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-03 09:04:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:07,686 INFO L225 Difference]: With dead ends: 16 [2018-10-03 09:04:07,687 INFO L226 Difference]: Without dead ends: 14 [2018-10-03 09:04:07,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-03 09:04:07,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-03 09:04:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-03 09:04:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 09:04:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-03 09:04:07,690 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-03 09:04:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:07,690 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-03 09:04:07,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:04:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-03 09:04:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 09:04:07,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:07,691 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-03 09:04:07,691 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:07,692 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:07,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1270286943, now seen corresponding path program 10 times [2018-10-03 09:04:07,692 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:07,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:07,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:07,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:07,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:07,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:07,902 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:07,924 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:07,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:07,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:07,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:04:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:04:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:04:07,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:07,997 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-03 09:04:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:08,026 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-03 09:04:08,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:04:08,027 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-03 09:04:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:08,028 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:04:08,028 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:04:08,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-03 09:04:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:04:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:04:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:04:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-03 09:04:08,032 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-03 09:04:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:08,032 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-03 09:04:08,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:04:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-03 09:04:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:04:08,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:08,033 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-03 09:04:08,033 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:08,033 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:08,034 INFO L82 PathProgramCache]: Analyzing trace with hash -724191544, now seen corresponding path program 11 times [2018-10-03 09:04:08,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:08,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:08,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:08,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:08,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:08,446 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:08,470 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-03 09:04:08,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:08,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:08,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:04:08,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:04:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:04:08,567 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:08,567 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-03 09:04:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:08,649 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-03 09:04:08,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:04:08,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-03 09:04:08,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:08,650 INFO L225 Difference]: With dead ends: 18 [2018-10-03 09:04:08,651 INFO L226 Difference]: Without dead ends: 16 [2018-10-03 09:04:08,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-03 09:04:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-03 09:04:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-03 09:04:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-03 09:04:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-03 09:04:08,653 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-03 09:04:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:08,654 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-03 09:04:08,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:04:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-03 09:04:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-03 09:04:08,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:08,655 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-03 09:04:08,655 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:08,655 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:08,655 INFO L82 PathProgramCache]: Analyzing trace with hash -975103359, now seen corresponding path program 12 times [2018-10-03 09:04:08,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:08,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:08,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:08,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:08,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:08,813 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:08,848 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:04:08,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:08,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:08,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:04:08,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:04:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:04:08,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:08,935 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-03 09:04:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:08,982 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-03 09:04:08,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:04:08,983 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-03 09:04:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:08,983 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:04:08,984 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:04:08,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 13 [2018-10-03 09:04:08,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:04:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-03 09:04:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-03 09:04:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-03 09:04:08,988 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-03 09:04:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:08,988 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-03 09:04:08,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:04:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-03 09:04:08,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 09:04:08,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:08,989 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-03 09:04:08,989 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:08,989 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:08,990 INFO L82 PathProgramCache]: Analyzing trace with hash -163435032, now seen corresponding path program 13 times [2018-10-03 09:04:08,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:08,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:08,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:08,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:09,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:09,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:09,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:09,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:09,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:09,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:04:09,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:04:09,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:04:09,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:09,442 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-03 09:04:09,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:09,669 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-03 09:04:09,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:04:09,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-03 09:04:09,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:09,670 INFO L225 Difference]: With dead ends: 20 [2018-10-03 09:04:09,670 INFO L226 Difference]: Without dead ends: 18 [2018-10-03 09:04:09,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 14 [2018-10-03 09:04:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-03 09:04:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-03 09:04:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-03 09:04:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-03 09:04:09,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-03 09:04:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:09,675 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-03 09:04:09,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:04:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-03 09:04:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-03 09:04:09,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:09,676 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-03 09:04:09,676 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:09,676 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash -771520671, now seen corresponding path program 14 times [2018-10-03 09:04:09,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:09,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:09,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:09,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:09,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:10,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:10,030 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:10,057 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:10,086 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:10,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:10,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:10,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:10,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:04:10,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:04:10,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:04:10,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:10,192 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-03 09:04:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:10,237 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-03 09:04:10,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:04:10,238 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-03 09:04:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:10,239 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:04:10,239 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:04:10,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 15 [2018-10-03 09:04:10,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:04:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:04:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:04:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-03 09:04:10,243 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-03 09:04:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:10,243 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-03 09:04:10,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:04:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-03 09:04:10,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:04:10,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:10,244 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-03 09:04:10,245 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:10,245 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:10,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1852661000, now seen corresponding path program 15 times [2018-10-03 09:04:10,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:10,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:10,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:10,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:10,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:10,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:10,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:10,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:10,808 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-03 09:04:10,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:10,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:11,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:11,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:04:11,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:04:11,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:04:11,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:11,008 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-03 09:04:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:11,044 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-03 09:04:11,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:04:11,044 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-03 09:04:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:11,045 INFO L225 Difference]: With dead ends: 22 [2018-10-03 09:04:11,045 INFO L226 Difference]: Without dead ends: 20 [2018-10-03 09:04:11,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 16 [2018-10-03 09:04:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-03 09:04:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-03 09:04:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-03 09:04:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-03 09:04:11,049 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-03 09:04:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:11,049 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-03 09:04:11,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:04:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-03 09:04:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-03 09:04:11,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:11,050 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-03 09:04:11,051 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:11,051 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:11,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1597914177, now seen corresponding path program 16 times [2018-10-03 09:04:11,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:11,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:11,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:11,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:11,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:11,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:11,362 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:11,375 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:11,428 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:11,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:11,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:11,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:11,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:04:11,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:04:11,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:04:11,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:11,660 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-03 09:04:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:11,723 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-03 09:04:11,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:04:11,724 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-03 09:04:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:11,725 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:04:11,725 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:04:11,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 17 [2018-10-03 09:04:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:04:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:04:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:04:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-03 09:04:11,728 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-03 09:04:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:11,728 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-03 09:04:11,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:04:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-03 09:04:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:04:11,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:11,729 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-03 09:04:11,729 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:11,729 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:11,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2004270040, now seen corresponding path program 17 times [2018-10-03 09:04:11,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:11,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:11,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:11,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:11,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:12,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:12,895 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:12,904 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:12,940 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-03 09:04:12,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:12,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:13,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:13,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:04:13,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:04:13,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:04:13,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:13,044 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-03 09:04:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:13,127 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-03 09:04:13,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:04:13,128 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-03 09:04:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:13,129 INFO L225 Difference]: With dead ends: 24 [2018-10-03 09:04:13,129 INFO L226 Difference]: Without dead ends: 22 [2018-10-03 09:04:13,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 18 [2018-10-03 09:04:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-03 09:04:13,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-03 09:04:13,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-03 09:04:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-03 09:04:13,133 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-03 09:04:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:13,134 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-03 09:04:13,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:04:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-03 09:04:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-03 09:04:13,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:13,135 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-03 09:04:13,135 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:13,135 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2002831071, now seen corresponding path program 18 times [2018-10-03 09:04:13,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:13,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:13,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:13,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:13,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:13,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:13,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:13,421 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:13,459 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-03 09:04:13,460 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:13,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:13,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:13,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:04:13,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:04:13,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:04:13,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:13,554 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-03 09:04:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:13,591 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-03 09:04:13,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:04:13,591 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-03 09:04:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:13,592 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:04:13,592 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:04:13,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 19 [2018-10-03 09:04:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:04:13,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:04:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:04:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-03 09:04:13,597 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-03 09:04:13,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:13,597 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-03 09:04:13,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:04:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-03 09:04:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:04:13,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:13,598 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-03 09:04:13,598 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:13,599 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:13,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1958223032, now seen corresponding path program 19 times [2018-10-03 09:04:13,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:13,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:13,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:13,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:13,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:14,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:14,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:14,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:14,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:14,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:14,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:04:14,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:04:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:04:14,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:14,688 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-03 09:04:14,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:14,790 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-03 09:04:14,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:04:14,791 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-03 09:04:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:14,792 INFO L225 Difference]: With dead ends: 26 [2018-10-03 09:04:14,792 INFO L226 Difference]: Without dead ends: 24 [2018-10-03 09:04:14,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 20 [2018-10-03 09:04:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-03 09:04:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-03 09:04:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-03 09:04:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-03 09:04:14,796 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-03 09:04:14,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:14,796 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-03 09:04:14,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:04:14,796 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-03 09:04:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 09:04:14,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:14,797 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-03 09:04:14,797 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:14,797 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:14,797 INFO L82 PathProgramCache]: Analyzing trace with hash -575373823, now seen corresponding path program 20 times [2018-10-03 09:04:14,798 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:14,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:14,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:14,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:14,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:15,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:15,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:15,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:15,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:15,341 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:15,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:15,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:15,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:04:15,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:04:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:04:15,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:15,418 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-03 09:04:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:15,455 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-03 09:04:15,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:04:15,460 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-03 09:04:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:15,461 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:04:15,461 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:04:15,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 21 [2018-10-03 09:04:15,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:04:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:04:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:04:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-03 09:04:15,465 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-03 09:04:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:15,465 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-03 09:04:15,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:04:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-03 09:04:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:04:15,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:15,467 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-03 09:04:15,467 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:15,467 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash -656721304, now seen corresponding path program 21 times [2018-10-03 09:04:15,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:15,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:15,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:15,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:15,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:15,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:15,868 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:15,903 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-03 09:04:15,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:15,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:16,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:16,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:04:16,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:04:16,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:04:16,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:16,293 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-03 09:04:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:16,515 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-03 09:04:16,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:04:16,519 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-03 09:04:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:16,519 INFO L225 Difference]: With dead ends: 28 [2018-10-03 09:04:16,519 INFO L226 Difference]: Without dead ends: 26 [2018-10-03 09:04:16,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime 22 [2018-10-03 09:04:16,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-03 09:04:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-03 09:04:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-03 09:04:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-03 09:04:16,523 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-03 09:04:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:16,524 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-03 09:04:16,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:04:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-03 09:04:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-03 09:04:16,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:16,525 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-03 09:04:16,525 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:16,525 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:16,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1116474081, now seen corresponding path program 22 times [2018-10-03 09:04:16,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:16,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:16,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:16,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:16,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:16,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:16,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:16,813 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:16,855 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:16,855 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:16,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:17,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:17,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:04:17,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:04:17,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:04:17,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:17,064 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-03 09:04:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:17,117 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-03 09:04:17,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:04:17,117 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-03 09:04:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:17,118 INFO L225 Difference]: With dead ends: 29 [2018-10-03 09:04:17,118 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:04:17,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 23 [2018-10-03 09:04:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:04:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:04:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:04:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-03 09:04:17,122 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-03 09:04:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:17,122 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-03 09:04:17,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:04:17,123 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-03 09:04:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:04:17,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:17,123 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-03 09:04:17,124 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:17,124 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:17,124 INFO L82 PathProgramCache]: Analyzing trace with hash 250956168, now seen corresponding path program 23 times [2018-10-03 09:04:17,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:17,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:17,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:17,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:17,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:17,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:17,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:17,471 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:17,550 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-03 09:04:17,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:17,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:17,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:17,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:04:17,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:04:17,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:04:17,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:17,621 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-03 09:04:17,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:17,661 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-03 09:04:17,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:04:17,662 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-03 09:04:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:17,663 INFO L225 Difference]: With dead ends: 30 [2018-10-03 09:04:17,663 INFO L226 Difference]: Without dead ends: 28 [2018-10-03 09:04:17,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 24 [2018-10-03 09:04:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-03 09:04:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-03 09:04:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-03 09:04:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-03 09:04:17,671 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-03 09:04:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:17,671 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-03 09:04:17,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:04:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-03 09:04:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-03 09:04:17,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:17,675 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-03 09:04:17,675 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:17,675 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:17,675 INFO L82 PathProgramCache]: Analyzing trace with hash -810295359, now seen corresponding path program 24 times [2018-10-03 09:04:17,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:17,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:17,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:17,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:17,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:17,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:17,976 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:17,983 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:18,028 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:04:18,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:18,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:18,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:18,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:04:18,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:04:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:04:18,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:18,165 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-03 09:04:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:18,233 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-03 09:04:18,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:04:18,234 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-03 09:04:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:18,235 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:04:18,235 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:04:18,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 25 [2018-10-03 09:04:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:04:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:04:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:04:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-03 09:04:18,239 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-03 09:04:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:18,240 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-03 09:04:18,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:04:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-03 09:04:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:04:18,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:18,240 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-03 09:04:18,241 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:18,241 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:18,241 INFO L82 PathProgramCache]: Analyzing trace with hash 650645672, now seen corresponding path program 25 times [2018-10-03 09:04:18,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:18,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:18,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:18,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:18,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:18,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:18,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:18,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:18,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:18,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:18,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:04:18,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:04:18,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:04:18,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:18,814 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-03 09:04:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:18,863 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-03 09:04:18,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:04:18,863 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-03 09:04:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:18,864 INFO L225 Difference]: With dead ends: 32 [2018-10-03 09:04:18,864 INFO L226 Difference]: Without dead ends: 30 [2018-10-03 09:04:18,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 26 [2018-10-03 09:04:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-03 09:04:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-03 09:04:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-03 09:04:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-03 09:04:18,869 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-03 09:04:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:18,869 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-03 09:04:18,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:04:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-03 09:04:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-03 09:04:18,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:18,870 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-03 09:04:18,870 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:18,870 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1304822623, now seen corresponding path program 26 times [2018-10-03 09:04:18,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:18,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:18,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:18,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:18,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:19,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:19,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:19,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:19,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:19,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:19,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:20,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:20,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:04:20,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:04:20,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:04:20,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:20,041 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-03 09:04:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:20,124 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-03 09:04:20,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:04:20,125 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-03 09:04:20,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:20,125 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:04:20,125 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:04:20,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 27 [2018-10-03 09:04:20,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:04:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:04:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:04:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-03 09:04:20,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-03 09:04:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:20,129 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-03 09:04:20,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:04:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-03 09:04:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:04:20,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:20,130 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-03 09:04:20,130 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:20,131 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:20,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1794797624, now seen corresponding path program 27 times [2018-10-03 09:04:20,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:20,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:20,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:20,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:20,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:20,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:20,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:20,859 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:20,905 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-03 09:04:20,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:20,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:20,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:20,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:04:20,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:04:20,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:04:20,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:20,993 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-03 09:04:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:21,039 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-03 09:04:21,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:04:21,039 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-03 09:04:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:21,040 INFO L225 Difference]: With dead ends: 34 [2018-10-03 09:04:21,040 INFO L226 Difference]: Without dead ends: 32 [2018-10-03 09:04:21,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 28 [2018-10-03 09:04:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-03 09:04:21,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-03 09:04:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-03 09:04:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-03 09:04:21,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-03 09:04:21,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:21,045 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-03 09:04:21,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:04:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-03 09:04:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-03 09:04:21,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:21,046 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-03 09:04:21,046 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:21,046 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:21,046 INFO L82 PathProgramCache]: Analyzing trace with hash 195846529, now seen corresponding path program 28 times [2018-10-03 09:04:21,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:21,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:21,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:21,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:21,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:21,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:21,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:21,427 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:21,470 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:21,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:21,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:21,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:21,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:04:21,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:04:21,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:04:21,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:21,544 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-03 09:04:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:21,589 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-03 09:04:21,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:04:21,589 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-03 09:04:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:21,590 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:04:21,590 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:04:21,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 29 [2018-10-03 09:04:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:04:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:04:21,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:04:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-03 09:04:21,594 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-03 09:04:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:21,595 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-03 09:04:21,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:04:21,595 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-03 09:04:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:04:21,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:21,597 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-03 09:04:21,597 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:21,597 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:21,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1776273128, now seen corresponding path program 29 times [2018-10-03 09:04:21,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:21,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:21,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:21,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:21,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:22,448 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:22,448 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:22,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:22,508 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-03 09:04:22,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:22,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:22,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:22,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:04:22,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:04:22,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:04:22,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:22,599 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-03 09:04:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:22,641 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-03 09:04:22,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:04:22,641 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-03 09:04:22,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:22,642 INFO L225 Difference]: With dead ends: 36 [2018-10-03 09:04:22,642 INFO L226 Difference]: Without dead ends: 34 [2018-10-03 09:04:22,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 30 [2018-10-03 09:04:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-03 09:04:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-03 09:04:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-03 09:04:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-03 09:04:22,645 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-03 09:04:22,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:22,646 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-03 09:04:22,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:04:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-03 09:04:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 09:04:22,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:22,646 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-03 09:04:22,647 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:22,647 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:22,647 INFO L82 PathProgramCache]: Analyzing trace with hash -770109855, now seen corresponding path program 30 times [2018-10-03 09:04:22,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:22,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:22,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:22,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:22,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:23,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:23,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:23,746 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:23,807 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-03 09:04:23,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:23,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:23,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:23,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:04:23,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:04:23,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:04:23,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:23,953 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-03 09:04:23,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:23,987 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-03 09:04:23,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:04:23,987 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-03 09:04:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:23,988 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:04:23,988 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:04:23,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 31 [2018-10-03 09:04:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:04:23,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:04:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:04:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-03 09:04:23,991 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-03 09:04:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:23,992 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-03 09:04:23,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:04:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-03 09:04:23,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:04:23,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:23,993 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-03 09:04:23,993 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:23,993 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1896396296, now seen corresponding path program 31 times [2018-10-03 09:04:23,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:23,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:23,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:23,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:23,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:24,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:24,795 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:24,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:24,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:24,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:24,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:04:24,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:04:24,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:04:24,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:24,924 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-03 09:04:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:24,975 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-03 09:04:24,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:04:24,976 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-03 09:04:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:24,976 INFO L225 Difference]: With dead ends: 38 [2018-10-03 09:04:24,977 INFO L226 Difference]: Without dead ends: 36 [2018-10-03 09:04:24,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 32 [2018-10-03 09:04:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-03 09:04:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-03 09:04:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-03 09:04:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-03 09:04:24,981 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-03 09:04:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:24,981 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-03 09:04:24,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:04:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-03 09:04:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-03 09:04:24,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:24,982 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-03 09:04:24,982 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:24,982 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1341258943, now seen corresponding path program 32 times [2018-10-03 09:04:24,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:24,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:24,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:24,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:24,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:25,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:25,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:25,977 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:26,024 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:26,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:26,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:26,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:26,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:04:26,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:04:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:04:26,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:26,128 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-03 09:04:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:26,183 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-03 09:04:26,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:04:26,184 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-03 09:04:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:26,184 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:04:26,185 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:04:26,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 33 [2018-10-03 09:04:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:04:26,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:04:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:04:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-03 09:04:26,189 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-03 09:04:26,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:26,189 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-03 09:04:26,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:04:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-03 09:04:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:04:26,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:26,190 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-03 09:04:26,190 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:26,190 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:26,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1370643752, now seen corresponding path program 33 times [2018-10-03 09:04:26,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:26,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:26,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:26,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:26,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:26,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:26,730 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:26,738 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:26,799 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-03 09:04:26,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:26,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:26,901 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:26,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:04:26,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:04:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:04:26,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:26,902 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-03 09:04:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:26,973 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-03 09:04:26,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:04:26,973 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-03 09:04:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:26,974 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:04:26,974 INFO L226 Difference]: Without dead ends: 38 [2018-10-03 09:04:26,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 34 [2018-10-03 09:04:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-03 09:04:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-03 09:04:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-03 09:04:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-03 09:04:26,977 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-03 09:04:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:26,977 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-03 09:04:26,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:04:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-03 09:04:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-03 09:04:26,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:26,978 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-03 09:04:26,978 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:26,978 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash -459718623, now seen corresponding path program 34 times [2018-10-03 09:04:26,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:26,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:26,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:26,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:26,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:28,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:28,134 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:28,142 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:28,191 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:28,191 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:28,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:28,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:28,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:04:28,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:04:28,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:04:28,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:28,355 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-03 09:04:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:28,415 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-03 09:04:28,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:04:28,415 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-03 09:04:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:28,416 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:04:28,416 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:04:28,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 35 [2018-10-03 09:04:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:04:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:04:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:04:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-03 09:04:28,421 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-03 09:04:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:28,421 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-03 09:04:28,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:04:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-03 09:04:28,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:04:28,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:28,422 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-03 09:04:28,422 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:28,423 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:28,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1366377400, now seen corresponding path program 35 times [2018-10-03 09:04:28,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:28,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:28,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:28,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:28,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:29,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:29,189 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:29,197 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:29,267 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-03 09:04:29,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:29,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:29,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:29,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:04:29,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:04:29,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:04:29,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:29,377 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-03 09:04:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:29,515 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-03 09:04:29,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:04:29,516 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-03 09:04:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:29,516 INFO L225 Difference]: With dead ends: 42 [2018-10-03 09:04:29,516 INFO L226 Difference]: Without dead ends: 40 [2018-10-03 09:04:29,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 36 [2018-10-03 09:04:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-03 09:04:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-03 09:04:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-03 09:04:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-03 09:04:29,520 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-03 09:04:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:29,520 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-03 09:04:29,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:04:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-03 09:04:29,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-03 09:04:29,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:29,521 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-03 09:04:29,521 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:29,522 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:29,522 INFO L82 PathProgramCache]: Analyzing trace with hash 591971585, now seen corresponding path program 36 times [2018-10-03 09:04:29,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:29,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:29,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:29,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:29,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:30,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:30,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:30,252 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:30,317 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:04:30,317 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:30,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:31,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:31,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:04:31,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:04:31,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:04:31,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:31,073 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-03 09:04:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:31,132 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-03 09:04:31,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:04:31,132 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-03 09:04:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:31,133 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:04:31,133 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:04:31,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.5s impTime 37 [2018-10-03 09:04:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:04:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:04:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:04:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-03 09:04:31,137 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-03 09:04:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:31,137 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-03 09:04:31,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:04:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-03 09:04:31,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:04:31,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:31,138 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-03 09:04:31,138 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:31,138 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:31,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1171247976, now seen corresponding path program 37 times [2018-10-03 09:04:31,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:31,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:31,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:31,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:32,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:32,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:32,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:32,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:32,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:32,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:04:32,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:04:32,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:04:32,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:32,210 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-03 09:04:32,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:32,331 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-03 09:04:32,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:04:32,332 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-03 09:04:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:32,332 INFO L225 Difference]: With dead ends: 44 [2018-10-03 09:04:32,332 INFO L226 Difference]: Without dead ends: 42 [2018-10-03 09:04:32,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 38 [2018-10-03 09:04:32,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-03 09:04:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-03 09:04:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-03 09:04:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-03 09:04:32,336 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-03 09:04:32,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:32,336 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-03 09:04:32,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:04:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-03 09:04:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-03 09:04:32,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:32,337 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-03 09:04:32,337 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:32,337 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:32,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1948946913, now seen corresponding path program 38 times [2018-10-03 09:04:32,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:32,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:32,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:32,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:32,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:33,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:33,006 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:33,015 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:33,072 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:33,072 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:33,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:33,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:33,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:04:33,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:04:33,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:04:33,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:33,207 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-03 09:04:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:33,273 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-03 09:04:33,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:04:33,274 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-03 09:04:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:33,274 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:04:33,274 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:04:33,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 39 [2018-10-03 09:04:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:04:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:04:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:04:33,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-03 09:04:33,277 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-03 09:04:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:33,278 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-03 09:04:33,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:04:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-03 09:04:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:04:33,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:33,279 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-03 09:04:33,279 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:33,279 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:33,279 INFO L82 PathProgramCache]: Analyzing trace with hash 287810184, now seen corresponding path program 39 times [2018-10-03 09:04:33,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:33,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:33,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:33,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:33,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:33,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:33,793 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:33,801 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:33,869 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-03 09:04:33,869 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:33,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:33,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:33,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:04:33,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:04:33,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:04:33,981 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:33,981 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-03 09:04:34,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:34,076 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-03 09:04:34,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:04:34,076 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-03 09:04:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:34,077 INFO L225 Difference]: With dead ends: 46 [2018-10-03 09:04:34,077 INFO L226 Difference]: Without dead ends: 44 [2018-10-03 09:04:34,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 40 [2018-10-03 09:04:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-03 09:04:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-03 09:04:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-03 09:04:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-03 09:04:34,080 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-03 09:04:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:34,080 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-03 09:04:34,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:04:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-03 09:04:34,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 09:04:34,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:34,081 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-03 09:04:34,081 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:34,081 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:34,081 INFO L82 PathProgramCache]: Analyzing trace with hash 332179137, now seen corresponding path program 40 times [2018-10-03 09:04:34,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:34,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:34,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:34,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:34,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:35,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:35,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:35,944 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:36,008 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:36,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:36,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:36,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:36,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:04:36,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:04:36,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:04:36,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:36,142 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-03 09:04:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:36,244 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-03 09:04:36,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:04:36,245 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-03 09:04:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:36,246 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:04:36,246 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:04:36,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 41 [2018-10-03 09:04:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:04:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:04:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:04:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-03 09:04:36,249 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-03 09:04:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:36,250 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-03 09:04:36,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:04:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-03 09:04:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:04:36,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:36,251 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-03 09:04:36,251 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:36,251 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:36,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1707616680, now seen corresponding path program 41 times [2018-10-03 09:04:36,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:36,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:36,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:36,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:36,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:37,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:37,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:37,228 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:37,505 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-03 09:04:37,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:37,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:37,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:37,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:04:37,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:04:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:04:37,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:37,702 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-03 09:04:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:37,969 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-03 09:04:37,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:04:37,970 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-03 09:04:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:37,971 INFO L225 Difference]: With dead ends: 48 [2018-10-03 09:04:37,971 INFO L226 Difference]: Without dead ends: 46 [2018-10-03 09:04:37,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 42 [2018-10-03 09:04:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-03 09:04:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-03 09:04:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-03 09:04:37,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-03 09:04:37,973 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-03 09:04:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:37,973 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-03 09:04:37,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:04:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-03 09:04:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-03 09:04:37,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:37,974 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-03 09:04:37,974 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:37,974 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:37,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1396507553, now seen corresponding path program 42 times [2018-10-03 09:04:37,974 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:37,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:37,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:37,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:37,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:38,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:38,963 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:38,976 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:39,079 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-03 09:04:39,079 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:39,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:39,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:39,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:04:39,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:04:39,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:04:39,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:39,209 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-03 09:04:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:39,283 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-03 09:04:39,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:04:39,285 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-03 09:04:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:39,286 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:04:39,286 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:04:39,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 43 [2018-10-03 09:04:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:04:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:04:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:04:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-03 09:04:39,289 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-03 09:04:39,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:39,289 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-03 09:04:39,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:04:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-03 09:04:39,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:04:39,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:39,290 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-03 09:04:39,290 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:39,290 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash 342059208, now seen corresponding path program 43 times [2018-10-03 09:04:39,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:39,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:39,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:39,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:39,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:40,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:40,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:40,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:40,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:40,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:40,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:04:40,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:04:40,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:04:40,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:40,674 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-03 09:04:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:40,806 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-03 09:04:40,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:04:40,806 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-03 09:04:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:40,807 INFO L225 Difference]: With dead ends: 50 [2018-10-03 09:04:40,807 INFO L226 Difference]: Without dead ends: 48 [2018-10-03 09:04:40,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 44 [2018-10-03 09:04:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-03 09:04:40,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-03 09:04:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-03 09:04:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-03 09:04:40,811 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-03 09:04:40,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:40,811 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-03 09:04:40,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:04:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-03 09:04:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-03 09:04:40,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:40,812 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-03 09:04:40,812 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:40,812 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:40,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2013898881, now seen corresponding path program 44 times [2018-10-03 09:04:40,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:40,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:40,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:40,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:40,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:41,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:41,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:41,793 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:41,857 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:41,857 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:41,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:41,964 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:41,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:04:41,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:04:41,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:04:41,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:41,965 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-03 09:04:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:42,043 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-03 09:04:42,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:04:42,043 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-03 09:04:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:42,044 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:04:42,044 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:04:42,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 45 [2018-10-03 09:04:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:04:42,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:04:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:04:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-03 09:04:42,046 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-03 09:04:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:42,047 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-03 09:04:42,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:04:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-03 09:04:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:04:42,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:42,047 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-03 09:04:42,048 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:42,048 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1993646104, now seen corresponding path program 45 times [2018-10-03 09:04:42,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:42,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:42,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:42,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:42,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:42,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:42,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:42,762 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:42,844 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-03 09:04:42,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:42,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:43,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:43,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:04:43,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:04:43,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:04:43,020 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:43,020 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-03 09:04:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:43,280 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-03 09:04:43,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:04:43,280 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-03 09:04:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:43,281 INFO L225 Difference]: With dead ends: 52 [2018-10-03 09:04:43,281 INFO L226 Difference]: Without dead ends: 50 [2018-10-03 09:04:43,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 46 [2018-10-03 09:04:43,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-03 09:04:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-03 09:04:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-03 09:04:43,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-03 09:04:43,283 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-03 09:04:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:43,283 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-03 09:04:43,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:04:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-03 09:04:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-03 09:04:43,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:43,284 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-03 09:04:43,284 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:43,284 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:43,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1673489055, now seen corresponding path program 46 times [2018-10-03 09:04:43,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:43,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:43,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:43,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:43,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:44,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:44,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:44,433 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:44,503 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:44,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:44,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:44,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:44,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:04:44,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:04:44,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:04:44,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:44,651 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-03 09:04:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:44,743 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-03 09:04:44,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:04:44,744 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-03 09:04:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:44,744 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:04:44,744 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:04:44,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 47 [2018-10-03 09:04:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:04:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:04:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:04:44,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-03 09:04:44,746 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-03 09:04:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:44,746 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-03 09:04:44,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:04:44,747 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-03 09:04:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:04:44,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:44,747 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-03 09:04:44,747 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:44,748 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:44,748 INFO L82 PathProgramCache]: Analyzing trace with hash -338555128, now seen corresponding path program 47 times [2018-10-03 09:04:44,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:44,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:44,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:44,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:44,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:45,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:45,581 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:45,588 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:45,674 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-03 09:04:45,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:45,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:45,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:45,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:04:45,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:04:45,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:04:45,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:45,792 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-03 09:04:45,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:45,878 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-03 09:04:45,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:04:45,879 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-03 09:04:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:45,880 INFO L225 Difference]: With dead ends: 54 [2018-10-03 09:04:45,880 INFO L226 Difference]: Without dead ends: 52 [2018-10-03 09:04:45,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 48 [2018-10-03 09:04:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-03 09:04:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-03 09:04:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-03 09:04:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-03 09:04:45,882 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-03 09:04:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:45,882 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-03 09:04:45,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:04:45,883 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-03 09:04:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-03 09:04:45,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:45,883 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-03 09:04:45,883 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:45,884 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1905276351, now seen corresponding path program 48 times [2018-10-03 09:04:45,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:45,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:45,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:45,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:45,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:46,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:46,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:46,607 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:46,689 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:04:46,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:46,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:46,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:46,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:04:46,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:04:46,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:04:46,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:46,804 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-03 09:04:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:46,872 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-03 09:04:46,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:04:46,872 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-03 09:04:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:46,873 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:04:46,873 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:04:46,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 49 [2018-10-03 09:04:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:04:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:04:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:04:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-03 09:04:46,876 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-03 09:04:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:46,877 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-03 09:04:46,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:04:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-03 09:04:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:04:46,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:46,877 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-03 09:04:46,877 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:46,877 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1065973288, now seen corresponding path program 49 times [2018-10-03 09:04:46,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:46,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:46,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:46,878 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:46,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:48,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:48,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:48,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:48,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:48,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:48,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:04:48,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:04:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:04:48,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:48,523 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-03 09:04:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:48,609 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-03 09:04:48,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:04:48,610 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-03 09:04:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:48,610 INFO L225 Difference]: With dead ends: 56 [2018-10-03 09:04:48,610 INFO L226 Difference]: Without dead ends: 54 [2018-10-03 09:04:48,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 50 [2018-10-03 09:04:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-03 09:04:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-03 09:04:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-03 09:04:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-03 09:04:48,612 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-03 09:04:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:48,613 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-03 09:04:48,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:04:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-03 09:04:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 09:04:48,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:48,613 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-03 09:04:48,613 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:48,614 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1314568415, now seen corresponding path program 50 times [2018-10-03 09:04:48,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:48,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:48,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:48,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:48,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:49,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:49,461 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:49,469 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:49,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:49,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:49,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:49,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:49,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:04:49,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:04:49,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:04:49,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:49,663 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-03 09:04:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:49,742 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-03 09:04:49,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:04:49,743 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-03 09:04:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:49,744 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:04:49,744 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:04:49,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 51 [2018-10-03 09:04:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:04:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:04:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:04:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-03 09:04:49,746 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-03 09:04:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:49,746 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-03 09:04:49,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:04:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-03 09:04:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:04:49,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:49,747 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-03 09:04:49,748 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:49,748 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash -2096917176, now seen corresponding path program 51 times [2018-10-03 09:04:49,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:49,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:49,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:49,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:49,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:51,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:51,440 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:51,448 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:51,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-03 09:04:51,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:51,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:51,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:51,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:04:51,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:04:51,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:04:51,901 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:51,901 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-03 09:04:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:51,995 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-03 09:04:51,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:04:51,995 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-03 09:04:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:51,996 INFO L225 Difference]: With dead ends: 58 [2018-10-03 09:04:51,996 INFO L226 Difference]: Without dead ends: 56 [2018-10-03 09:04:51,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 52 [2018-10-03 09:04:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-03 09:04:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-03 09:04:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-03 09:04:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-03 09:04:51,999 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-03 09:04:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:51,999 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-03 09:04:51,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:04:52,000 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-03 09:04:52,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-03 09:04:52,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:52,001 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-03 09:04:52,001 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:52,001 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:52,001 INFO L82 PathProgramCache]: Analyzing trace with hash -579924991, now seen corresponding path program 52 times [2018-10-03 09:04:52,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:52,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:52,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:52,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:52,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:53,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:53,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:53,490 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:53,567 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:53,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:53,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:53,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:53,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:04:53,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:04:53,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:04:53,687 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:53,687 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-03 09:04:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:53,782 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-03 09:04:53,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:04:53,782 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-03 09:04:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:53,783 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:04:53,783 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:04:53,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 53 [2018-10-03 09:04:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:04:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:04:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:04:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-03 09:04:53,787 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-03 09:04:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:53,787 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-03 09:04:53,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:04:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-03 09:04:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:04:53,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:53,788 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-03 09:04:53,788 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:53,788 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:53,788 INFO L82 PathProgramCache]: Analyzing trace with hash -797807512, now seen corresponding path program 53 times [2018-10-03 09:04:53,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:53,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:53,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:53,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:53,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:55,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:55,494 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:55,502 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:55,610 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-03 09:04:55,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:55,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:55,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:55,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:04:55,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:04:55,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:04:55,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:55,899 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-03 09:04:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:55,992 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-03 09:04:55,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:04:55,993 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-03 09:04:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:55,993 INFO L225 Difference]: With dead ends: 60 [2018-10-03 09:04:55,994 INFO L226 Difference]: Without dead ends: 58 [2018-10-03 09:04:55,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 54 [2018-10-03 09:04:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-03 09:04:55,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-03 09:04:55,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-03 09:04:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-03 09:04:55,996 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-03 09:04:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:55,996 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-03 09:04:55,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:04:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-03 09:04:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-03 09:04:55,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:55,996 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-03 09:04:55,997 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:55,997 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1037768929, now seen corresponding path program 54 times [2018-10-03 09:04:55,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:55,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:55,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:55,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:55,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:57,038 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:57,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:57,045 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:57,137 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-03 09:04:57,137 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:57,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:57,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:57,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:04:57,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:04:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:04:57,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:57,301 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-03 09:04:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:57,388 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-03 09:04:57,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:04:57,389 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-03 09:04:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:57,389 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:04:57,389 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:04:57,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 55 [2018-10-03 09:04:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:04:57,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:04:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:04:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-03 09:04:57,391 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-03 09:04:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:57,392 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-03 09:04:57,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:04:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-03 09:04:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:04:57,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:57,392 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-03 09:04:57,392 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:57,393 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:57,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2106063752, now seen corresponding path program 55 times [2018-10-03 09:04:57,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:57,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:57,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:57,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:57,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:58,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:58,447 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:58,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:58,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:58,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:58,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:04:58,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:04:58,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:04:58,662 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:58,662 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-03 09:04:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:58,781 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-03 09:04:58,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:04:58,781 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-03 09:04:58,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:58,782 INFO L225 Difference]: With dead ends: 62 [2018-10-03 09:04:58,782 INFO L226 Difference]: Without dead ends: 60 [2018-10-03 09:04:58,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 56 [2018-10-03 09:04:58,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-03 09:04:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-03 09:04:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-03 09:04:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-03 09:04:58,784 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-03 09:04:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:58,785 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-03 09:04:58,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:04:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-03 09:04:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-03 09:04:58,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:58,785 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-03 09:04:58,785 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:58,786 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:58,786 INFO L82 PathProgramCache]: Analyzing trace with hash 863464897, now seen corresponding path program 56 times [2018-10-03 09:04:58,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:58,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:58,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:58,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:58,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:00,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:00,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:00,479 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:00,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:00,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:00,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:00,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:00,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:05:00,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:05:00,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:05:00,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:00,688 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-03 09:05:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:00,782 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-03 09:05:00,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:05:00,782 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-03 09:05:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:00,783 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:05:00,783 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:05:00,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 57 [2018-10-03 09:05:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:05:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:05:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:05:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-03 09:05:00,787 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-03 09:05:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:00,787 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-03 09:05:00,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:05:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-03 09:05:00,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:05:00,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:00,788 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-03 09:05:00,788 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:00,788 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash 997606056, now seen corresponding path program 57 times [2018-10-03 09:05:00,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:00,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:00,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:00,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:00,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:02,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:02,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:02,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:02,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-03 09:05:02,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:02,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:04,520 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:04,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:05:04,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:05:04,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:05:04,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:04,521 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-03 09:05:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:04,620 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-03 09:05:04,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:05:04,621 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-03 09:05:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:04,621 INFO L225 Difference]: With dead ends: 64 [2018-10-03 09:05:04,621 INFO L226 Difference]: Without dead ends: 62 [2018-10-03 09:05:04,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 1.6s impTime 58 [2018-10-03 09:05:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-03 09:05:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-03 09:05:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-03 09:05:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-03 09:05:04,624 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-03 09:05:04,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:04,625 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-03 09:05:04,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:05:04,625 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-03 09:05:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-03 09:05:04,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:04,625 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-03 09:05:04,626 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:04,626 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash 861014689, now seen corresponding path program 58 times [2018-10-03 09:05:04,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:04,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:04,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:04,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:04,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:06,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:06,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:06,199 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:06,277 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:06,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:06,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:06,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:06,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:05:06,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:05:06,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:05:06,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:06,418 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-03 09:05:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:06,546 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-03 09:05:06,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:05:06,547 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-03 09:05:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:06,547 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:05:06,547 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:05:06,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 59 [2018-10-03 09:05:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:05:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:05:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:05:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-03 09:05:06,550 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-03 09:05:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:06,550 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-03 09:05:06,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:05:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-03 09:05:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:05:06,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:06,551 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-03 09:05:06,551 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:06,551 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:06,551 INFO L82 PathProgramCache]: Analyzing trace with hash 921649608, now seen corresponding path program 59 times [2018-10-03 09:05:06,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:06,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:06,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:06,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:06,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:08,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:08,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:08,445 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:08,550 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-03 09:05:08,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:08,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:08,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:08,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:08,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:05:08,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:05:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:05:08,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:08,745 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-03 09:05:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:08,872 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-03 09:05:08,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:05:08,873 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-03 09:05:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:08,873 INFO L225 Difference]: With dead ends: 66 [2018-10-03 09:05:08,873 INFO L226 Difference]: Without dead ends: 64 [2018-10-03 09:05:08,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 60 [2018-10-03 09:05:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-03 09:05:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-03 09:05:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-03 09:05:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-03 09:05:08,876 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-03 09:05:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:08,877 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-03 09:05:08,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:05:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-03 09:05:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 09:05:08,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:08,877 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-03 09:05:08,877 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:08,878 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:08,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1493635199, now seen corresponding path program 60 times [2018-10-03 09:05:08,878 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:08,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:08,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:08,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:08,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:09,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:09,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:09,992 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:10,102 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:05:10,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:10,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:10,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:10,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:05:10,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:05:10,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:05:10,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:10,256 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-03 09:05:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:10,353 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-03 09:05:10,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:05:10,353 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-03 09:05:10,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:10,354 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:05:10,354 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:05:10,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 61 [2018-10-03 09:05:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:05:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:05:10,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:05:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-03 09:05:10,356 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-03 09:05:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:10,356 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-03 09:05:10,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:05:10,356 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-03 09:05:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:05:10,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:10,357 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-03 09:05:10,357 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:10,357 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:10,357 INFO L82 PathProgramCache]: Analyzing trace with hash 941947112, now seen corresponding path program 61 times [2018-10-03 09:05:10,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:10,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:10,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:10,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:10,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:11,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:11,640 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:11,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:11,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:11,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:11,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:05:11,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:05:11,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:05:11,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:11,878 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-03 09:05:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:11,977 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-03 09:05:11,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:05:11,977 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-03 09:05:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:11,978 INFO L225 Difference]: With dead ends: 68 [2018-10-03 09:05:11,978 INFO L226 Difference]: Without dead ends: 66 [2018-10-03 09:05:11,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 62 [2018-10-03 09:05:11,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-03 09:05:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-03 09:05:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-03 09:05:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-03 09:05:11,980 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-03 09:05:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:11,981 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-03 09:05:11,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:05:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-03 09:05:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-03 09:05:11,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:11,981 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-03 09:05:11,981 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:11,981 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:11,982 INFO L82 PathProgramCache]: Analyzing trace with hash -864412575, now seen corresponding path program 62 times [2018-10-03 09:05:11,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:11,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:11,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:11,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:11,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:12,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:12,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:13,006 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:13,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:13,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:13,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:13,408 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:13,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:05:13,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:05:13,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:05:13,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:13,410 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-03 09:05:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:13,599 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-03 09:05:13,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:05:13,599 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-03 09:05:13,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:13,600 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:05:13,600 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:05:13,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 63 [2018-10-03 09:05:13,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:05:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:05:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:05:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-03 09:05:13,603 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-03 09:05:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:13,603 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-03 09:05:13,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:05:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-03 09:05:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:05:13,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:13,604 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-03 09:05:13,604 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:13,604 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:13,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1026988024, now seen corresponding path program 63 times [2018-10-03 09:05:13,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:13,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:13,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:13,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:13,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:14,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:14,823 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:14,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:14,969 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-03 09:05:14,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:14,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:15,248 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:15,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:05:15,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:05:15,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:05:15,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:15,250 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-03 09:05:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:15,482 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-03 09:05:15,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:05:15,482 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-03 09:05:15,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:15,483 INFO L225 Difference]: With dead ends: 70 [2018-10-03 09:05:15,483 INFO L226 Difference]: Without dead ends: 68 [2018-10-03 09:05:15,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 64 [2018-10-03 09:05:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-03 09:05:15,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-03 09:05:15,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-03 09:05:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-03 09:05:15,486 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-03 09:05:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:15,487 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-03 09:05:15,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:05:15,487 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-03 09:05:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-03 09:05:15,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:15,488 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-03 09:05:15,488 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:15,488 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:15,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1771859647, now seen corresponding path program 64 times [2018-10-03 09:05:15,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:15,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:15,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:15,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:15,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:17,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:17,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:17,732 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:17,830 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:17,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:17,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:17,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:17,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:05:17,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:05:17,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:05:17,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:17,971 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-03 09:05:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:18,099 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-03 09:05:18,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:05:18,100 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-03 09:05:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:18,100 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:05:18,101 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:05:18,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 65 [2018-10-03 09:05:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:05:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:05:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:05:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-03 09:05:18,103 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-03 09:05:18,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:18,103 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-03 09:05:18,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:05:18,103 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-03 09:05:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:05:18,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:18,104 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-03 09:05:18,104 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:18,104 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:18,104 INFO L82 PathProgramCache]: Analyzing trace with hash 906923816, now seen corresponding path program 65 times [2018-10-03 09:05:18,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:18,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:18,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:18,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:18,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:19,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:19,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:19,671 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:19,796 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-03 09:05:19,796 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:19,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:19,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:19,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:05:19,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:05:19,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:05:19,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:19,975 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-03 09:05:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:20,107 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-03 09:05:20,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:05:20,107 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-03 09:05:20,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:20,108 INFO L225 Difference]: With dead ends: 72 [2018-10-03 09:05:20,108 INFO L226 Difference]: Without dead ends: 70 [2018-10-03 09:05:20,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 66 [2018-10-03 09:05:20,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-03 09:05:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-03 09:05:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-03 09:05:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-03 09:05:20,111 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-03 09:05:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:20,111 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-03 09:05:20,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:05:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-03 09:05:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-03 09:05:20,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:20,112 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-03 09:05:20,112 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:20,112 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:20,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1950134751, now seen corresponding path program 66 times [2018-10-03 09:05:20,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:20,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:20,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:20,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:20,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:21,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:21,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:21,745 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:21,877 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-03 09:05:21,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:21,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:23,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:23,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:05:23,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:05:23,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:05:23,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:23,319 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-03 09:05:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:23,723 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-03 09:05:23,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:05:23,723 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-03 09:05:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:23,724 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:05:23,724 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:05:23,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 1.4s impTime 67 [2018-10-03 09:05:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:05:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:05:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:05:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-03 09:05:23,727 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-03 09:05:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:23,727 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-03 09:05:23,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:05:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-03 09:05:23,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:05:23,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:23,729 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-03 09:05:23,729 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:23,729 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:23,729 INFO L82 PathProgramCache]: Analyzing trace with hash -324637112, now seen corresponding path program 67 times [2018-10-03 09:05:23,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:23,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:23,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:23,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:23,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:26,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:26,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:26,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:26,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:26,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:26,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:05:26,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:05:26,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:05:26,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:26,717 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-03 09:05:26,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:26,854 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-03 09:05:26,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:05:26,854 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-03 09:05:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:26,855 INFO L225 Difference]: With dead ends: 74 [2018-10-03 09:05:26,855 INFO L226 Difference]: Without dead ends: 72 [2018-10-03 09:05:26,855 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime 68 [2018-10-03 09:05:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-03 09:05:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-03 09:05:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-03 09:05:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-03 09:05:26,857 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-03 09:05:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:26,857 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-03 09:05:26,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:05:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-03 09:05:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-03 09:05:26,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:26,858 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-03 09:05:26,858 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:26,858 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1473817855, now seen corresponding path program 68 times [2018-10-03 09:05:26,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:26,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:26,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:26,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:26,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:28,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:28,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:28,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:28,932 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:28,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:28,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:29,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:29,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:05:29,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:05:29,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:05:29,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:29,089 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-03 09:05:29,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:29,238 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-03 09:05:29,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:05:29,239 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-03 09:05:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:29,239 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:05:29,239 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:05:29,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 69 [2018-10-03 09:05:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:05:29,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:05:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:05:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-03 09:05:29,242 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-03 09:05:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:29,243 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-03 09:05:29,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:05:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-03 09:05:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:05:29,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:29,243 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-03 09:05:29,244 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:29,244 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:29,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1556284776, now seen corresponding path program 69 times [2018-10-03 09:05:29,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:29,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:29,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:29,245 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:29,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:31,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:31,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:31,778 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:31,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-03 09:05:31,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:31,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:32,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:32,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:05:32,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:05:32,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:05:32,074 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:32,074 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-03 09:05:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:32,262 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-03 09:05:32,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:05:32,262 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-03 09:05:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:32,263 INFO L225 Difference]: With dead ends: 76 [2018-10-03 09:05:32,263 INFO L226 Difference]: Without dead ends: 74 [2018-10-03 09:05:32,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.3s impTime 70 [2018-10-03 09:05:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-03 09:05:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-03 09:05:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-03 09:05:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-03 09:05:32,266 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-03 09:05:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:32,266 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-03 09:05:32,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:05:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-03 09:05:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 09:05:32,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:32,267 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-03 09:05:32,267 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:32,267 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:32,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1000185825, now seen corresponding path program 70 times [2018-10-03 09:05:32,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:32,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:32,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:32,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:32,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:33,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:33,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:33,892 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:33,997 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:33,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:34,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:34,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:34,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:05:34,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:05:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:05:34,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:34,171 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-03 09:05:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:34,361 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-03 09:05:34,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:05:34,362 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-03 09:05:34,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:34,362 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:05:34,362 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:05:34,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 71 [2018-10-03 09:05:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:05:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:05:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:05:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-03 09:05:34,365 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-03 09:05:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:34,366 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-03 09:05:34,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:05:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-03 09:05:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:05:34,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:34,367 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-03 09:05:34,367 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:34,368 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:34,368 INFO L82 PathProgramCache]: Analyzing trace with hash 940987528, now seen corresponding path program 71 times [2018-10-03 09:05:34,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:34,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:34,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:34,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:34,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:36,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:36,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:36,651 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:36,781 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-03 09:05:36,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:36,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:37,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:37,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:05:37,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:05:37,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:05:37,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:37,147 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-03 09:05:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:37,277 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-03 09:05:37,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:05:37,278 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-03 09:05:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:37,280 INFO L225 Difference]: With dead ends: 78 [2018-10-03 09:05:37,280 INFO L226 Difference]: Without dead ends: 76 [2018-10-03 09:05:37,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 72 [2018-10-03 09:05:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-03 09:05:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-03 09:05:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-03 09:05:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-03 09:05:37,285 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-03 09:05:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:37,285 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-03 09:05:37,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:05:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-03 09:05:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-03 09:05:37,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:37,286 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-03 09:05:37,286 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:37,286 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash -894159679, now seen corresponding path program 72 times [2018-10-03 09:05:37,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:37,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:37,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:37,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:37,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:39,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:39,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:39,556 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:39,689 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:05:39,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:39,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:39,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:39,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:05:39,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:05:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:05:39,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:39,870 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-03 09:05:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:40,027 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-03 09:05:40,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:05:40,028 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-03 09:05:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:40,029 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:05:40,029 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:05:40,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 73 [2018-10-03 09:05:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:05:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:05:40,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:05:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-03 09:05:40,031 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-03 09:05:40,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:40,032 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-03 09:05:40,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:05:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-03 09:05:40,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:05:40,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:40,033 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-03 09:05:40,033 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:40,033 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1949148248, now seen corresponding path program 73 times [2018-10-03 09:05:40,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:40,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:40,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:40,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:40,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:42,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:42,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:42,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:42,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:43,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:43,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:05:43,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:05:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:05:43,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:43,131 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-03 09:05:43,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:43,297 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-03 09:05:43,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:05:43,298 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-03 09:05:43,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:43,299 INFO L225 Difference]: With dead ends: 80 [2018-10-03 09:05:43,299 INFO L226 Difference]: Without dead ends: 78 [2018-10-03 09:05:43,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.6s impTime 74 [2018-10-03 09:05:43,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-03 09:05:43,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-03 09:05:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-03 09:05:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-03 09:05:43,301 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-03 09:05:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:43,301 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-03 09:05:43,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:05:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-03 09:05:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-03 09:05:43,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:43,302 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-03 09:05:43,302 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:43,302 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:43,302 INFO L82 PathProgramCache]: Analyzing trace with hash -294055519, now seen corresponding path program 74 times [2018-10-03 09:05:43,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:43,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:43,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:43,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:43,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:45,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:45,644 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:45,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:45,756 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:45,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:45,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:45,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:45,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:05:45,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:05:45,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:05:45,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:45,944 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-03 09:05:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:46,111 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-03 09:05:46,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:05:46,111 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-03 09:05:46,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:46,112 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:05:46,112 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:05:46,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 75 [2018-10-03 09:05:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:05:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:05:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:05:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-03 09:05:46,115 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-03 09:05:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:46,115 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-03 09:05:46,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:05:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-03 09:05:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:05:46,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:46,116 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-03 09:05:46,116 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:46,116 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:46,116 INFO L82 PathProgramCache]: Analyzing trace with hash -525788472, now seen corresponding path program 75 times [2018-10-03 09:05:46,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:46,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:46,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:46,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:46,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:48,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:48,955 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:48,961 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:49,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-03 09:05:49,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:49,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:49,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:49,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:05:49,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:05:49,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:05:49,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:49,314 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-03 09:05:50,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:50,039 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-03 09:05:50,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:05:50,040 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-03 09:05:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:50,041 INFO L225 Difference]: With dead ends: 82 [2018-10-03 09:05:50,041 INFO L226 Difference]: Without dead ends: 80 [2018-10-03 09:05:50,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 76 [2018-10-03 09:05:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-03 09:05:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-03 09:05:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-03 09:05:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-03 09:05:50,043 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-03 09:05:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:50,043 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-03 09:05:50,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:05:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-03 09:05:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-03 09:05:50,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:50,044 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-03 09:05:50,044 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:50,044 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:50,044 INFO L82 PathProgramCache]: Analyzing trace with hash 880424577, now seen corresponding path program 76 times [2018-10-03 09:05:50,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:50,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:50,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:50,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:52,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:52,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:52,880 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:52,988 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:52,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:52,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:53,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:53,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:05:53,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:05:53,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:05:53,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:53,174 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-03 09:05:53,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:53,746 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-03 09:05:53,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:05:53,746 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-03 09:05:53,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:53,747 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:05:53,747 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:05:53,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 77 [2018-10-03 09:05:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:05:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:05:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:05:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-03 09:05:53,749 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-03 09:05:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:53,750 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-03 09:05:53,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:05:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-03 09:05:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:05:53,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:53,751 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-03 09:05:53,751 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:53,751 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:53,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1523356136, now seen corresponding path program 77 times [2018-10-03 09:05:53,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:53,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:53,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:53,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:56,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:56,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:56,409 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:56,558 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-03 09:05:56,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:56,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:56,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:56,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:05:56,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:05:56,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:05:56,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:56,829 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-03 09:05:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:56,997 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-03 09:05:56,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:05:56,997 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-03 09:05:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:56,998 INFO L225 Difference]: With dead ends: 84 [2018-10-03 09:05:56,998 INFO L226 Difference]: Without dead ends: 82 [2018-10-03 09:05:56,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 78 [2018-10-03 09:05:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-03 09:05:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-03 09:05:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-03 09:05:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-03 09:05:57,001 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-03 09:05:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:57,002 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-03 09:05:57,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:05:57,002 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-03 09:05:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-03 09:05:57,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:57,003 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-03 09:05:57,003 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:57,003 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:57,004 INFO L82 PathProgramCache]: Analyzing trace with hash -20602015, now seen corresponding path program 78 times [2018-10-03 09:05:57,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:57,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:57,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:57,004 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:57,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:59,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:59,082 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:59,228 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-03 09:05:59,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:59,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:59,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:05:59,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:05:59,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:05:59,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:59,403 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-03 09:05:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:59,527 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-03 09:05:59,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:05:59,527 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-03 09:05:59,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:59,528 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:05:59,528 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:05:59,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 79 [2018-10-03 09:05:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:05:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:05:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:05:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-03 09:05:59,530 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-03 09:05:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:59,531 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-03 09:05:59,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:05:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-03 09:05:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:05:59,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:59,531 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-03 09:05:59,531 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:59,532 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash -638664440, now seen corresponding path program 79 times [2018-10-03 09:05:59,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:59,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:59,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:59,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:02,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:02,212 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:02,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:02,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:02,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:02,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:06:02,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:06:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:06:02,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:02,507 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-03 09:06:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:02,689 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-03 09:06:02,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:06:02,689 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-03 09:06:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:02,690 INFO L225 Difference]: With dead ends: 86 [2018-10-03 09:06:02,690 INFO L226 Difference]: Without dead ends: 84 [2018-10-03 09:06:02,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 80 [2018-10-03 09:06:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-03 09:06:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-03 09:06:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-03 09:06:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-03 09:06:02,693 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-03 09:06:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:02,693 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-03 09:06:02,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:06:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-03 09:06:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 09:06:02,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:02,694 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-03 09:06:02,694 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:02,694 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:02,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1676236865, now seen corresponding path program 80 times [2018-10-03 09:06:02,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:02,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:02,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:02,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:02,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:05,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:05,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:05,277 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:05,394 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:05,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:05,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:05,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:05,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:06:05,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:06:05,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:06:05,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:05,593 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-03 09:06:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:05,778 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-03 09:06:05,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:06:05,779 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-03 09:06:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:05,780 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:06:05,780 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:06:05,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 81 [2018-10-03 09:06:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:06:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:06:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:06:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-03 09:06:05,782 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-03 09:06:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:05,782 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-03 09:06:05,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:06:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-03 09:06:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:06:05,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:05,783 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-03 09:06:05,783 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:05,783 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:05,783 INFO L82 PathProgramCache]: Analyzing trace with hash 423733288, now seen corresponding path program 81 times [2018-10-03 09:06:05,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:05,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:05,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:05,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:05,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:07,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:07,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:07,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:07,951 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:08,110 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-03 09:06:08,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:08,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:08,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:08,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:06:08,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:06:08,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:06:08,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:08,387 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-03 09:06:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:08,547 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-03 09:06:08,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:06:08,547 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-03 09:06:08,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:08,548 INFO L225 Difference]: With dead ends: 88 [2018-10-03 09:06:08,548 INFO L226 Difference]: Without dead ends: 86 [2018-10-03 09:06:08,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.8s impTime 82 [2018-10-03 09:06:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-03 09:06:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-03 09:06:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-03 09:06:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-03 09:06:08,550 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-03 09:06:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:08,551 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-03 09:06:08,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:06:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-03 09:06:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-03 09:06:08,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:08,552 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-03 09:06:08,552 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:08,552 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:08,552 INFO L82 PathProgramCache]: Analyzing trace with hash 250828065, now seen corresponding path program 82 times [2018-10-03 09:06:08,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:08,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:08,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:08,553 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:08,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:11,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:11,349 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:11,357 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:11,474 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:11,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:11,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:11,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:11,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:06:11,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:06:11,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:06:11,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:11,731 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-03 09:06:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:12,085 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-03 09:06:12,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:06:12,086 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-03 09:06:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:12,086 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:06:12,087 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:06:12,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 83 [2018-10-03 09:06:12,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:06:12,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:06:12,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:06:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-03 09:06:12,090 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-03 09:06:12,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:12,090 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-03 09:06:12,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:06:12,090 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-03 09:06:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:06:12,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:12,090 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-03 09:06:12,091 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:12,091 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:12,091 INFO L82 PathProgramCache]: Analyzing trace with hash -814266552, now seen corresponding path program 83 times [2018-10-03 09:06:12,091 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:12,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:12,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:12,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:12,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:15,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:15,204 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:15,213 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:15,377 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-03 09:06:15,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:15,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:15,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:15,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:15,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:06:15,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:06:15,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:06:15,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:15,560 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-03 09:06:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:15,787 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-03 09:06:15,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:06:15,788 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-03 09:06:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:15,789 INFO L225 Difference]: With dead ends: 90 [2018-10-03 09:06:15,789 INFO L226 Difference]: Without dead ends: 88 [2018-10-03 09:06:15,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.8s impTime 84 [2018-10-03 09:06:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-03 09:06:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-03 09:06:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-03 09:06:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-03 09:06:15,791 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-03 09:06:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:15,791 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-03 09:06:15,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:06:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-03 09:06:15,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-03 09:06:15,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:15,792 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-03 09:06:15,792 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:15,792 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:15,792 INFO L82 PathProgramCache]: Analyzing trace with hash 527538689, now seen corresponding path program 84 times [2018-10-03 09:06:15,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:15,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:15,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:17,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:17,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:17,846 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:18,005 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:06:18,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:18,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:18,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:18,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:06:18,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:06:18,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:06:18,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:18,190 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-03 09:06:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:18,341 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-03 09:06:18,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:06:18,341 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-03 09:06:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:18,342 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:06:18,342 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:06:18,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 85 [2018-10-03 09:06:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:06:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:06:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:06:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-03 09:06:18,345 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-03 09:06:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:18,345 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-03 09:06:18,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:06:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-03 09:06:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:06:18,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:18,346 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-03 09:06:18,347 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:18,347 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:18,347 INFO L82 PathProgramCache]: Analyzing trace with hash -826171800, now seen corresponding path program 85 times [2018-10-03 09:06:18,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:18,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:18,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:18,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:18,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:20,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:20,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:20,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:20,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:20,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:20,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:06:20,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:06:20,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:06:20,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:20,715 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-03 09:06:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:20,868 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-03 09:06:20,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:06:20,868 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-03 09:06:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:20,869 INFO L225 Difference]: With dead ends: 92 [2018-10-03 09:06:20,869 INFO L226 Difference]: Without dead ends: 90 [2018-10-03 09:06:20,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 86 [2018-10-03 09:06:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-03 09:06:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-03 09:06:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-03 09:06:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-03 09:06:20,871 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-03 09:06:20,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:20,872 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-03 09:06:20,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:06:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-03 09:06:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-03 09:06:20,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:20,873 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-03 09:06:20,873 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:20,873 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:20,873 INFO L82 PathProgramCache]: Analyzing trace with hash 158476001, now seen corresponding path program 86 times [2018-10-03 09:06:20,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:20,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:20,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:20,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:20,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:23,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:23,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:23,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:23,725 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:23,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:23,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:23,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:23,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:06:23,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:06:23,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:06:23,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:23,910 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-03 09:06:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:24,078 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-03 09:06:24,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:06:24,078 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-03 09:06:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:24,079 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:06:24,079 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:06:24,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 87 [2018-10-03 09:06:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:06:24,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:06:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:06:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-03 09:06:24,081 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-03 09:06:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:24,081 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-03 09:06:24,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:06:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-03 09:06:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:06:24,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:24,082 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-03 09:06:24,082 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:24,082 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:24,082 INFO L82 PathProgramCache]: Analyzing trace with hash 617786760, now seen corresponding path program 87 times [2018-10-03 09:06:24,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:24,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:24,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:24,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:24,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:26,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:26,703 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:26,711 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:26,882 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-03 09:06:26,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:26,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:27,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:27,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:06:27,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:06:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:06:27,111 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:27,111 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-03 09:06:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:27,279 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-03 09:06:27,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:06:27,279 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-03 09:06:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:27,279 INFO L225 Difference]: With dead ends: 94 [2018-10-03 09:06:27,279 INFO L226 Difference]: Without dead ends: 92 [2018-10-03 09:06:27,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 88 [2018-10-03 09:06:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-03 09:06:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-03 09:06:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-03 09:06:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-03 09:06:27,282 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-03 09:06:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:27,282 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-03 09:06:27,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:06:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-03 09:06:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-03 09:06:27,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:27,283 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-03 09:06:27,283 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:27,283 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1971518401, now seen corresponding path program 88 times [2018-10-03 09:06:27,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:27,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:27,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:27,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:27,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:29,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:29,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:29,869 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:29,994 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:29,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:29,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:30,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:30,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:06:30,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:06:30,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:06:30,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:30,183 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-03 09:06:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:30,350 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-03 09:06:30,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:06:30,350 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-03 09:06:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:30,351 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:06:30,351 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:06:30,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 89 [2018-10-03 09:06:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:06:30,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:06:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:06:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-03 09:06:30,354 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-03 09:06:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:30,354 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-03 09:06:30,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:06:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-03 09:06:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:06:30,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:30,355 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-03 09:06:30,355 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:30,355 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:30,355 INFO L82 PathProgramCache]: Analyzing trace with hash 987526312, now seen corresponding path program 89 times [2018-10-03 09:06:30,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:30,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:30,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:30,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:30,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:32,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:32,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:32,822 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:32,997 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-03 09:06:32,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:33,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:33,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:33,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:06:33,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:06:33,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:06:33,192 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:33,192 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-03 09:06:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:33,343 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-03 09:06:33,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:06:33,343 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-03 09:06:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:33,344 INFO L225 Difference]: With dead ends: 96 [2018-10-03 09:06:33,344 INFO L226 Difference]: Without dead ends: 94 [2018-10-03 09:06:33,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 90 [2018-10-03 09:06:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-03 09:06:33,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-03 09:06:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-03 09:06:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-03 09:06:33,346 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-03 09:06:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:33,346 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-03 09:06:33,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:06:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-03 09:06:33,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 09:06:33,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:33,347 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-03 09:06:33,347 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:33,347 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:33,347 INFO L82 PathProgramCache]: Analyzing trace with hash 548542625, now seen corresponding path program 90 times [2018-10-03 09:06:33,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:33,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:33,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:33,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:33,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:35,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:35,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:35,402 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:35,580 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-03 09:06:35,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:35,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:35,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:35,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:06:35,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:06:35,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:06:35,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:35,775 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-03 09:06:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:35,954 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-03 09:06:35,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:06:35,954 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-03 09:06:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:35,955 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:06:35,955 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:06:35,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 91 [2018-10-03 09:06:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:06:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:06:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:06:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-03 09:06:35,958 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-03 09:06:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:35,958 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-03 09:06:35,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:06:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-03 09:06:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:06:35,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:35,959 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-03 09:06:35,959 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:35,959 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:35,960 INFO L82 PathProgramCache]: Analyzing trace with hash -175049784, now seen corresponding path program 91 times [2018-10-03 09:06:35,960 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:35,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:35,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:35,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:35,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:39,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:39,973 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:39,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:40,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:40,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:40,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:06:40,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:06:40,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:06:40,306 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:40,306 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-03 09:06:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:40,564 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-03 09:06:40,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:06:40,565 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-03 09:06:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:40,565 INFO L225 Difference]: With dead ends: 98 [2018-10-03 09:06:40,565 INFO L226 Difference]: Without dead ends: 96 [2018-10-03 09:06:40,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.7s impTime 92 [2018-10-03 09:06:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-03 09:06:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-03 09:06:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-03 09:06:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-03 09:06:40,568 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-03 09:06:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:40,568 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-03 09:06:40,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:06:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-03 09:06:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-03 09:06:40,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:40,569 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-03 09:06:40,569 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:40,569 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1131577983, now seen corresponding path program 92 times [2018-10-03 09:06:40,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:40,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:40,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:40,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:40,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:43,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:43,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:43,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:43,727 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:43,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:43,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:43,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:43,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:06:43,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:06:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:06:43,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:43,924 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-03 09:06:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:44,122 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-03 09:06:44,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:06:44,122 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-03 09:06:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:44,123 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:06:44,123 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:06:44,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 93 [2018-10-03 09:06:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:06:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:06:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:06:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-03 09:06:44,125 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-03 09:06:44,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:44,126 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-03 09:06:44,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:06:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-03 09:06:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:06:44,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:44,126 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-03 09:06:44,126 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:44,126 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:44,127 INFO L82 PathProgramCache]: Analyzing trace with hash -719181080, now seen corresponding path program 93 times [2018-10-03 09:06:44,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:44,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:44,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:44,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:44,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:46,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:46,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:46,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:46,706 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-03 09:06:46,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:46,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:46,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:46,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:06:46,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:06:46,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:06:46,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:46,903 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-03 09:06:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:47,121 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-03 09:06:47,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:06:47,122 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-03 09:06:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:47,122 INFO L225 Difference]: With dead ends: 100 [2018-10-03 09:06:47,122 INFO L226 Difference]: Without dead ends: 98 [2018-10-03 09:06:47,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 94 [2018-10-03 09:06:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-03 09:06:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-03 09:06:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-03 09:06:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-03 09:06:47,125 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-03 09:06:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:47,125 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-03 09:06:47,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:06:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-03 09:06:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-03 09:06:47,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:47,125 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-03 09:06:47,126 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:47,126 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash -819778975, now seen corresponding path program 94 times [2018-10-03 09:06:47,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:47,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:47,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:47,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:47,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:50,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:50,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:50,813 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:50,947 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:50,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:50,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:51,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:51,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:06:51,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:06:51,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:06:51,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:51,197 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-03 09:06:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:51,408 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-03 09:06:51,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:06:51,408 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-03 09:06:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:51,408 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:06:51,409 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:06:51,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 95 [2018-10-03 09:06:51,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:06:51,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:06:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:06:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-03 09:06:51,411 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-03 09:06:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:51,412 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-03 09:06:51,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:06:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-03 09:06:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:06:51,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:51,412 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-03 09:06:51,413 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:51,413 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash 356653576, now seen corresponding path program 95 times [2018-10-03 09:06:51,413 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:51,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:51,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:51,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:51,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:54,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:54,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:54,715 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:54,908 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-03 09:06:54,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:54,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:55,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:55,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:06:55,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:06:55,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:06:55,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:55,114 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-03 09:06:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:55,371 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-03 09:06:55,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:06:55,371 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-03 09:06:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:55,371 INFO L225 Difference]: With dead ends: 102 [2018-10-03 09:06:55,371 INFO L226 Difference]: Without dead ends: 100 [2018-10-03 09:06:55,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime 96 [2018-10-03 09:06:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-03 09:06:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-03 09:06:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-03 09:06:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-03 09:06:55,374 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-03 09:06:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:55,374 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-03 09:06:55,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:06:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-03 09:06:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-03 09:06:55,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:55,375 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-03 09:06:55,375 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:55,376 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:55,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1828643007, now seen corresponding path program 96 times [2018-10-03 09:06:55,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:55,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:55,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:55,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:55,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:57,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:57,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:57,807 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:58,002 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:06:58,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:58,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:58,366 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:58,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:06:58,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:06:58,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:06:58,367 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:58,367 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-03 09:06:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:58,527 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-03 09:06:58,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:06:58,528 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-03 09:06:58,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:58,528 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:06:58,529 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:06:58,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 97 [2018-10-03 09:06:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:06:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:06:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:06:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-03 09:06:58,532 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-03 09:06:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:58,532 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-03 09:06:58,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:06:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-03 09:06:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:06:58,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:58,533 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-03 09:06:58,533 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:58,533 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:58,533 INFO L82 PathProgramCache]: Analyzing trace with hash -853360344, now seen corresponding path program 97 times [2018-10-03 09:06:58,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:58,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:58,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:58,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:58,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:02,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:02,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:02,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:02,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:02,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:02,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:02,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:07:02,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:07:02,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:07:02,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:02,418 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-03 09:07:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:02,639 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-03 09:07:02,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:07:02,639 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-03 09:07:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:02,640 INFO L225 Difference]: With dead ends: 104 [2018-10-03 09:07:02,640 INFO L226 Difference]: Without dead ends: 102 [2018-10-03 09:07:02,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.2s impTime 98 [2018-10-03 09:07:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-03 09:07:02,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-03 09:07:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-03 09:07:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-03 09:07:02,643 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-03 09:07:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:02,643 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-03 09:07:02,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:07:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-03 09:07:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-03 09:07:02,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:02,644 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-03 09:07:02,644 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:02,644 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash -684368863, now seen corresponding path program 98 times [2018-10-03 09:07:02,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:02,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:02,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:02,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:07,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:07,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:07,307 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:07,449 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:07,449 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:07,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:07,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:07,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:07:07,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:07:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:07:07,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:07,661 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-03 09:07:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:07,984 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-03 09:07:07,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:07:07,985 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-03 09:07:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:07,985 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:07:07,985 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:07:07,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.3s impTime 99 [2018-10-03 09:07:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:07:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:07:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:07:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-03 09:07:07,988 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-03 09:07:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:07,988 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-03 09:07:07,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:07:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-03 09:07:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:07:07,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:07,989 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-03 09:07:07,989 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:07,989 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:07,989 INFO L82 PathProgramCache]: Analyzing trace with hash 259399752, now seen corresponding path program 99 times [2018-10-03 09:07:07,989 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:07,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:07,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:07,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:07,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:12,611 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:12,611 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:12,634 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:12,847 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-03 09:07:12,848 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:12,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:13,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:13,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:07:13,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:07:13,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:07:13,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:13,057 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-03 09:07:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:13,423 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-03 09:07:13,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:07:13,423 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-03 09:07:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:13,424 INFO L225 Difference]: With dead ends: 106 [2018-10-03 09:07:13,424 INFO L226 Difference]: Without dead ends: 104 [2018-10-03 09:07:13,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.3s impTime 100 [2018-10-03 09:07:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-03 09:07:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-03 09:07:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-03 09:07:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-03 09:07:13,428 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-03 09:07:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:13,428 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-03 09:07:13,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:07:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-03 09:07:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 09:07:13,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:13,429 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-03 09:07:13,429 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:13,429 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:13,430 INFO L82 PathProgramCache]: Analyzing trace with hash -548544255, now seen corresponding path program 100 times [2018-10-03 09:07:13,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:13,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:13,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:13,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:13,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:17,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:17,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:17,787 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:17,930 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:17,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:17,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:18,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:18,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:07:18,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:07:18,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:07:18,146 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:18,146 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-03 09:07:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:18,530 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-03 09:07:18,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:07:18,531 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-03 09:07:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:18,531 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:07:18,532 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:07:18,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time 4.0s impTime 101 [2018-10-03 09:07:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:07:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:07:18,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:07:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-03 09:07:18,535 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-03 09:07:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:18,535 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-03 09:07:18,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:07:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-03 09:07:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:07:18,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:18,536 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-03 09:07:18,536 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:18,536 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:18,536 INFO L82 PathProgramCache]: Analyzing trace with hash 174995304, now seen corresponding path program 101 times [2018-10-03 09:07:18,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:18,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:18,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:18,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:18,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:23,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:23,397 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:23,404 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:23,644 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-03 09:07:23,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:23,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:24,015 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:24,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:07:24,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:07:24,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:07:24,017 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:24,017 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-03 09:07:24,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:24,359 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-03 09:07:24,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:07:24,360 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-03 09:07:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:24,361 INFO L225 Difference]: With dead ends: 108 [2018-10-03 09:07:24,361 INFO L226 Difference]: Without dead ends: 106 [2018-10-03 09:07:24,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s Time 4.5s impTime 102 [2018-10-03 09:07:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-03 09:07:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-03 09:07:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-03 09:07:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-03 09:07:24,364 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-03 09:07:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:24,364 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-03 09:07:24,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:07:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-03 09:07:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-03 09:07:24,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:24,365 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-03 09:07:24,366 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:24,366 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:24,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1129885153, now seen corresponding path program 102 times [2018-10-03 09:07:24,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:24,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:24,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:24,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:24,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:29,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:29,425 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:29,432 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:29,654 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-03 09:07:29,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:29,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:29,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:29,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:07:29,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:07:29,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:07:29,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:29,894 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-03 09:07:30,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:30,246 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-03 09:07:30,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:07:30,246 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-03 09:07:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:30,247 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:07:30,247 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:07:30,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s Time 4.7s impTime 103 [2018-10-03 09:07:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:07:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:07:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:07:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-03 09:07:30,251 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-03 09:07:30,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:30,251 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-03 09:07:30,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:07:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-03 09:07:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:07:30,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:30,252 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-03 09:07:30,252 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:30,252 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:30,252 INFO L82 PathProgramCache]: Analyzing trace with hash 666699400, now seen corresponding path program 103 times [2018-10-03 09:07:30,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:30,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:30,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:30,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:30,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:33,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:33,251 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:33,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:33,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:33,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:33,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:07:33,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:07:33,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:07:33,725 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:33,725 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-03 09:07:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:33,992 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-03 09:07:33,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:07:33,992 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-03 09:07:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:33,993 INFO L225 Difference]: With dead ends: 110 [2018-10-03 09:07:33,993 INFO L226 Difference]: Without dead ends: 108 [2018-10-03 09:07:33,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 104 [2018-10-03 09:07:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-03 09:07:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-03 09:07:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-03 09:07:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-03 09:07:33,997 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-03 09:07:33,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:33,997 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-03 09:07:33,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:07:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-03 09:07:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-03 09:07:33,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:33,998 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-03 09:07:33,998 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:33,998 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:33,999 INFO L82 PathProgramCache]: Analyzing trace with hash -807157055, now seen corresponding path program 104 times [2018-10-03 09:07:33,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:33,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:33,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:33,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:33,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:36,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:36,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:36,751 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:36,900 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:36,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:36,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:37,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:37,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:07:37,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:07:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:07:37,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:37,204 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-03 09:07:37,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:37,436 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-03 09:07:37,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:07:37,436 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-03 09:07:37,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:37,437 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:07:37,437 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:07:37,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime 105 [2018-10-03 09:07:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:07:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:07:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:07:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-03 09:07:37,440 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-03 09:07:37,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:37,440 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-03 09:07:37,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:07:37,440 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-03 09:07:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:07:37,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:37,441 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-03 09:07:37,441 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:37,441 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash 747933096, now seen corresponding path program 105 times [2018-10-03 09:07:37,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:37,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:37,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:37,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:37,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:42,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:42,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:42,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:43,054 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-03 09:07:43,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:43,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:43,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:43,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:07:43,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:07:43,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:07:43,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:43,283 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-03 09:07:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:43,635 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-03 09:07:43,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:07:43,636 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-03 09:07:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:43,636 INFO L225 Difference]: With dead ends: 112 [2018-10-03 09:07:43,636 INFO L226 Difference]: Without dead ends: 110 [2018-10-03 09:07:43,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time 5.0s impTime 106 [2018-10-03 09:07:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-03 09:07:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-03 09:07:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-03 09:07:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-03 09:07:43,639 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-03 09:07:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:43,639 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-03 09:07:43,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:07:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-03 09:07:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-03 09:07:43,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:43,640 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-03 09:07:43,640 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:43,641 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1711087521, now seen corresponding path program 106 times [2018-10-03 09:07:43,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:43,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:43,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:43,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:43,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:47,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:47,357 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:47,365 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:47,518 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:47,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:47,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:47,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:47,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:07:47,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:07:47,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:07:47,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:47,773 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-03 09:07:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:48,072 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-03 09:07:48,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:07:48,073 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-03 09:07:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:48,073 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:07:48,074 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:07:48,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.4s impTime 107 [2018-10-03 09:07:48,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:07:48,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:07:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:07:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-03 09:07:48,076 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-03 09:07:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:48,076 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-03 09:07:48,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:07:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-03 09:07:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:07:48,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:48,077 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-03 09:07:48,077 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:48,077 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:48,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1504103624, now seen corresponding path program 107 times [2018-10-03 09:07:48,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:48,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:48,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:48,079 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:48,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:53,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:53,698 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:53,707 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:53,956 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-03 09:07:53,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:53,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:54,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:54,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:07:54,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:07:54,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:07:54,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:54,181 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-03 09:07:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:54,565 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-03 09:07:54,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:07:54,565 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-03 09:07:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:54,566 INFO L225 Difference]: With dead ends: 114 [2018-10-03 09:07:54,566 INFO L226 Difference]: Without dead ends: 112 [2018-10-03 09:07:54,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s Time 5.3s impTime 108 [2018-10-03 09:07:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-03 09:07:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-03 09:07:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-03 09:07:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-03 09:07:54,569 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-03 09:07:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:54,569 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-03 09:07:54,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:07:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-03 09:07:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-03 09:07:54,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:54,570 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-03 09:07:54,570 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:54,570 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:54,570 INFO L82 PathProgramCache]: Analyzing trace with hash -617429887, now seen corresponding path program 108 times [2018-10-03 09:07:54,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:54,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:54,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:57,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:57,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:57,439 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:57,668 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:07:57,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:57,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:57,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:57,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:07:57,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:07:57,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:07:57,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:57,899 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-03 09:07:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:58,132 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-03 09:07:58,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:07:58,132 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-03 09:07:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:58,133 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:07:58,133 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:07:58,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 109 [2018-10-03 09:07:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:07:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:07:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:07:58,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-03 09:07:58,135 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-03 09:07:58,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:58,135 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-03 09:07:58,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:07:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-03 09:07:58,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:07:58,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:58,136 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-03 09:07:58,136 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:58,136 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1960459288, now seen corresponding path program 109 times [2018-10-03 09:07:58,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:58,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:58,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:58,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:58,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:07:58,787 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:07:58,792 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:07:58,792 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:07:58 BoogieIcfgContainer [2018-10-03 09:07:58,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:07:58,793 INFO L168 Benchmark]: Toolchain (without parser) took 235507.86 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -88.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 143.3 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2018-10-03 09:07:58,795 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. [2018-10-03 09:07:58,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:07:58,796 INFO L168 Benchmark]: Boogie Preprocessor took 19.87 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:07:58,796 INFO L168 Benchmark]: RCFGBuilder took 314.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:07:58,797 INFO L168 Benchmark]: TraceAbstraction took 235124.25 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -88.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 122.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2018-10-03 09:07:58,800 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 42.25 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 19.87 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 314.91 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 235124.25 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -88.6 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 122.1 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 43). Cancelled while BasicCegarLoop was analyzing trace of length 113 with TraceHistMax 109, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 111 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 235.0s OverallTime, 110 OverallIterations, 109 TraceHistogramMax, 16.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 327 SDtfs, 0 SDslu, 4348 SDs, 0 SdLazy, 10452 SolverSat, 156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12206 GetRequests, 6211 SyntacticMatches, 0 SemanticMatches, 5995 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 109 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 10.6s SatisfiabilityAnalysisTime, 200.4s InterpolantComputationTime, 12423 NumberOfCodeBlocks, 12423 NumberOfCodeBlocksAsserted, 1774 NumberOfCheckSat, 12206 ConstructedInterpolants, 0 QuantifiedInterpolants, 2673980 SizeOfPredicates, 109 NumberOfNonLiveVariables, 66366 ConjunctsInSsa, 6103 ConjunctsInUnsatCore, 217 InterpolantComputations, 1 PerfectInterpolantSequences, 0/431640 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/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-07-58-810.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-07-58-810.csv Completed graceful shutdown