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 0.1.23-133090d [2018-10-04 09:36:53,650 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:36:53,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:36:53,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-04 09:36:53,704 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 09:36:53,731 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:36:53,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:36:53,735 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:36:53,735 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:36:53,736 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:36:53,737 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:36:53,737 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:36:53,737 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:36:53,737 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:36:53,737 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:36:53,738 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:36:53,738 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:36:53,738 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:36:53,738 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:36:53,738 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:36:53,739 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:36:53,739 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:36:53,739 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:36:53,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:36:53,740 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:36:53,740 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:36:53,740 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:36:53,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:36:53,741 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:36:53,741 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:36:53,741 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:36:53,741 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:36:53,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:36:53,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:36:53,742 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:36:53,742 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:36:53,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:36:53,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:36:53,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:36:53,826 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:36:53,826 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:36:53,827 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 09:36:53,827 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-04 09:36:53,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:36:53,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:36:53,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:36:53,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:36:53,885 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:36:53,905 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,917 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:36:53,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:36:53,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:36:53,925 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:36:53,937 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,937 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,938 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,938 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,941 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,943 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,944 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 04.10 09:36:53" (1/1) ... [2018-10-04 09:36:53,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:36:53,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:36:53,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:36:53,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:36:53,947 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 04.10 09:36:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:36:54,024 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 09:36:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 09:36:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 09:36:54,228 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 09:36:54,229 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:36:54 BoogieIcfgContainer [2018-10-04 09:36:54,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:36:54,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:36:54,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:36:54,233 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:36:54,234 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 04.10 09:36:53" (1/2) ... [2018-10-04 09:36:54,235 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 04.10 09:36:54, skipping insertion in model container [2018-10-04 09:36:54,235 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 04.10 09:36:54" (2/2) ... [2018-10-04 09:36:54,237 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 09:36:54,247 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:36:54,254 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:36:54,302 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:36:54,302 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:36:54,303 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:36:54,303 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:36:54,303 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:36:54,303 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:36:54,303 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:36:54,304 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:36:54,304 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:36:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 09:36:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 09:36:54,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:54,326 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 09:36:54,327 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:54,334 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-10-04 09:36:54,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:54,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:54,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:54,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:54,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:54,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:36:54,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:36:54,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:36:54,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:36:54,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:54,519 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 09:36:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:54,551 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 09:36:54,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:36:54,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 09:36:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:54,564 INFO L225 Difference]: With dead ends: 9 [2018-10-04 09:36:54,564 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 09:36:54,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:36:54,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 09:36:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 09:36:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 09:36:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 09:36:54,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 09:36:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:54,599 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 09:36:54,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:36:54,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 09:36:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 09:36:54,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:54,600 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 09:36:54,601 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:54,601 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:54,601 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-10-04 09:36:54,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:54,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:54,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:54,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:54,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:54,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:54,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:54,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:54,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:54,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:54,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:36:54,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:36:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:36:54,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:54,905 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 09:36:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:54,973 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 09:36:54,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:36:54,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 09:36:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:54,975 INFO L225 Difference]: With dead ends: 8 [2018-10-04 09:36:54,975 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 09:36:54,976 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 [2018-10-04 09:36:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 09:36:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 09:36:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 09:36:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 09:36:54,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 09:36:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:54,980 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 09:36:54,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:36:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 09:36:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 09:36:54,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:54,981 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 09:36:54,982 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:54,982 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:54,982 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-10-04 09:36:54,983 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:54,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:54,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:54,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:54,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:55,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:55,094 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:55,103 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:36:55,136 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:36:55,136 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:55,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:55,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:55,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:36:55,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:36:55,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:36:55,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:55,180 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 09:36:55,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:55,208 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 09:36:55,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:36:55,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 09:36:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:55,209 INFO L225 Difference]: With dead ends: 9 [2018-10-04 09:36:55,209 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 09:36:55,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-04 09:36:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 09:36:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 09:36:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 09:36:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 09:36:55,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 09:36:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:55,213 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 09:36:55,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:36:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 09:36:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:36:55,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:55,214 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 09:36:55,215 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:55,215 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:55,215 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-10-04 09:36:55,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:55,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:55,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:55,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:55,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:55,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:55,369 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:36:55,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 09:36:55,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:55,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:55,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:55,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:36:55,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:36:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:36:55,485 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:55,485 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 09:36:55,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:55,513 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 09:36:55,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:36:55,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 09:36:55,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:55,514 INFO L225 Difference]: With dead ends: 10 [2018-10-04 09:36:55,514 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 09:36:55,515 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 [2018-10-04 09:36:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 09:36:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 09:36:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 09:36:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 09:36:55,518 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 09:36:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:55,518 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 09:36:55,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:36:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 09:36:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 09:36:55,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:55,519 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 09:36:55,519 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:55,519 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:55,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-10-04 09:36:55,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:55,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:55,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:55,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:55,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:55,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:55,855 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:36:55,875 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:36:55,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:55,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:55,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:55,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:36:55,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:36:55,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:36:55,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:55,937 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 09:36:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:55,961 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 09:36:55,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:36:55,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 09:36:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:55,963 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:36:55,963 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 09:36:55,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 5 [2018-10-04 09:36:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 09:36:55,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 09:36:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 09:36:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 09:36:55,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 09:36:55,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:55,967 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 09:36:55,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:36:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 09:36:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 09:36:55,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:55,968 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 09:36:55,968 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:55,969 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-10-04 09:36:55,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:55,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:55,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:55,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:56,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:56,214 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:56,227 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:36:56,243 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 09:36:56,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:56,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:56,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:56,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:36:56,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:36:56,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:36:56,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:56,292 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 09:36:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:56,332 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 09:36:56,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:36:56,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 09:36:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:56,333 INFO L225 Difference]: With dead ends: 12 [2018-10-04 09:36:56,334 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 09:36:56,334 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 [2018-10-04 09:36:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 09:36:56,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 09:36:56,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 09:36:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 09:36:56,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 09:36:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:56,338 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 09:36:56,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:36:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 09:36:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 09:36:56,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:56,339 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 09:36:56,339 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:56,339 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:56,340 INFO L82 PathProgramCache]: Analyzing trace with hash 218072033, now seen corresponding path program 6 times [2018-10-04 09:36:56,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:56,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:56,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:56,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:56,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:56,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:56,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:56,493 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:36:56,528 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 09:36:56,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:56,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:56,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:56,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:36:56,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:36:56,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:36:56,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:56,632 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 09:36:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:56,742 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:36:56,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:36:56,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 09:36:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:56,744 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:36:56,744 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:36:56,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-04 09:36:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:36:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:36:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:36:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:36:56,748 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 09:36:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:56,748 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:36:56,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:36:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:36:56,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:36:56,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:56,749 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 09:36:56,749 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:56,750 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1829703544, now seen corresponding path program 7 times [2018-10-04 09:36:56,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:56,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:56,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:56,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:56,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:56,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:56,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:56,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:56,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:57,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:57,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:36:57,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:36:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:36:57,252 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:57,252 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 09:36:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:57,491 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 09:36:57,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:36:57,491 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 09:36:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:57,492 INFO L225 Difference]: With dead ends: 14 [2018-10-04 09:36:57,492 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 09:36:57,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 8 [2018-10-04 09:36:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 09:36:57,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 09:36:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 09:36:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 09:36:57,496 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 09:36:57,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:57,496 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 09:36:57,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:36:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 09:36:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 09:36:57,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:57,497 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 09:36:57,497 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:57,497 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:57,498 INFO L82 PathProgramCache]: Analyzing trace with hash -886236991, now seen corresponding path program 8 times [2018-10-04 09:36:57,498 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:57,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:57,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:57,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:57,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:57,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:57,701 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:57,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:36:57,731 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:36:57,731 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:57,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:57,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:57,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:36:57,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:36:57,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:36:57,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:57,845 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 09:36:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:57,893 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 09:36:57,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:36:57,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 09:36:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:57,895 INFO L225 Difference]: With dead ends: 15 [2018-10-04 09:36:57,895 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 09:36:57,895 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 [2018-10-04 09:36:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 09:36:57,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 09:36:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 09:36:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 09:36:57,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 09:36:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:57,900 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 09:36:57,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:36:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 09:36:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 09:36:57,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:57,900 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 09:36:57,901 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:57,901 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:57,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1703544920, now seen corresponding path program 9 times [2018-10-04 09:36:57,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:57,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:57,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:57,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:57,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:58,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:58,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:58,137 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:36:58,183 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 09:36:58,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:58,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:58,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:58,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:36:58,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:36:58,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:36:58,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:58,249 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 09:36:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:58,289 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 09:36:58,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:36:58,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 09:36:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:58,290 INFO L225 Difference]: With dead ends: 16 [2018-10-04 09:36:58,290 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 09:36:58,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 09:36:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 09:36:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 09:36:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 09:36:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 09:36:58,293 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 09:36:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:58,293 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 09:36:58,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:36:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 09:36:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 09:36:58,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:58,294 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 09:36:58,295 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:58,295 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1270286943, now seen corresponding path program 10 times [2018-10-04 09:36:58,295 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:58,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:58,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:58,296 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:58,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:58,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:58,483 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:58,491 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:36:58,518 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:36:58,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:58,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:58,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:58,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:36:58,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:36:58,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:36:58,607 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:58,607 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 09:36:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:58,645 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:36:58,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:36:58,652 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 09:36:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:58,653 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:36:58,653 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:36:58,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 11 [2018-10-04 09:36:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:36:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:36:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:36:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:36:58,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 09:36:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:58,657 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:36:58,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:36:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:36:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:36:58,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:58,658 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 09:36:58,658 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:58,658 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash -724191544, now seen corresponding path program 11 times [2018-10-04 09:36:58,659 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:58,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:58,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:58,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:58,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:58,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:58,827 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:58,834 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:36:58,945 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 09:36:58,945 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:58,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:59,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:59,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:36:59,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:36:59,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:36:59,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:59,161 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 09:36:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:59,250 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 09:36:59,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:36:59,251 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 09:36:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:59,252 INFO L225 Difference]: With dead ends: 18 [2018-10-04 09:36:59,252 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 09:36:59,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 12 [2018-10-04 09:36:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 09:36:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 09:36:59,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 09:36:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 09:36:59,255 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 09:36:59,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:59,256 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 09:36:59,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:36:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 09:36:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 09:36:59,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:59,257 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 09:36:59,257 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:59,257 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash -975103359, now seen corresponding path program 12 times [2018-10-04 09:36:59,257 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:59,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:59,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:59,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:59,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:59,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:59,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:59,418 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:36:59,447 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:36:59,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:36:59,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:59,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:59,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:36:59,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:36:59,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:36:59,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:59,530 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 09:36:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:36:59,567 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 09:36:59,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:36:59,567 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 09:36:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:36:59,568 INFO L225 Difference]: With dead ends: 19 [2018-10-04 09:36:59,568 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 09:36:59,569 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 [2018-10-04 09:36:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 09:36:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 09:36:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 09:36:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 09:36:59,573 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 09:36:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:36:59,573 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 09:36:59,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:36:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 09:36:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 09:36:59,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:36:59,574 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 09:36:59,575 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:36:59,575 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:36:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash -163435032, now seen corresponding path program 13 times [2018-10-04 09:36:59,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:36:59,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:36:59,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:59,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:36:59,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:36:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:59,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:36:59,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:36:59,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:36:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:36:59,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:36:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:36:59,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:36:59,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:36:59,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:36:59,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:36:59,895 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:36:59,895 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 09:37:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:00,100 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 09:37:00,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:37:00,100 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 09:37:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:00,101 INFO L225 Difference]: With dead ends: 20 [2018-10-04 09:37:00,101 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 09:37:00,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 09:37:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 09:37:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 09:37:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 09:37:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 09:37:00,104 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 09:37:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:00,105 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 09:37:00,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:37:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 09:37:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 09:37:00,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:00,105 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 09:37:00,106 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:00,106 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:00,106 INFO L82 PathProgramCache]: Analyzing trace with hash -771520671, now seen corresponding path program 14 times [2018-10-04 09:37:00,106 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:00,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:00,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:00,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:00,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:00,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:00,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:00,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:00,550 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:00,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:00,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:00,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:00,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:37:00,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:37:00,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:37:00,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:00,682 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 09:37:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:00,721 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:37:00,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:37:00,722 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 09:37:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:00,722 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:37:00,722 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:37:00,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 09:37:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:37:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:37:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:37:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:37:00,726 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 09:37:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:00,726 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:37:00,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:37:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:37:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:37:00,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:00,727 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 09:37:00,727 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:00,728 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1852661000, now seen corresponding path program 15 times [2018-10-04 09:37:00,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:00,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:00,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:00,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:00,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:01,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:01,170 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:01,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:01,333 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 09:37:01,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:01,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:01,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:01,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:37:01,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:37:01,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:37:01,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:01,468 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 09:37:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:01,514 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 09:37:01,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:37:01,514 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 09:37:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:01,515 INFO L225 Difference]: With dead ends: 22 [2018-10-04 09:37:01,515 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 09:37:01,516 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 [2018-10-04 09:37:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 09:37:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 09:37:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 09:37:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 09:37:01,521 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 09:37:01,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:01,521 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 09:37:01,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:37:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 09:37:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 09:37:01,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:01,523 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 09:37:01,523 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:01,523 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:01,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1597914177, now seen corresponding path program 16 times [2018-10-04 09:37:01,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:01,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:01,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:01,524 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:01,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:01,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:01,804 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:01,812 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:01,840 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:01,840 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:01,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:02,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:02,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:37:02,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:37:02,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:37:02,121 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:02,121 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 09:37:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:02,198 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 09:37:02,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:37:02,199 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 09:37:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:02,200 INFO L225 Difference]: With dead ends: 23 [2018-10-04 09:37:02,200 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 09:37:02,201 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 [2018-10-04 09:37:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 09:37:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 09:37:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 09:37:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 09:37:02,204 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 09:37:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:02,204 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 09:37:02,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:37:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 09:37:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 09:37:02,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:02,205 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 09:37:02,205 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:02,205 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:02,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2004270040, now seen corresponding path program 17 times [2018-10-04 09:37:02,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:02,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:02,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:02,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:02,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:02,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:02,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:02,549 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:02,604 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 09:37:02,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:02,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:02,713 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:02,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:37:02,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:37:02,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:37:02,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:02,714 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 09:37:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:02,762 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 09:37:02,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:37:02,762 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 09:37:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:02,763 INFO L225 Difference]: With dead ends: 24 [2018-10-04 09:37:02,763 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 09:37:02,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 18 [2018-10-04 09:37:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 09:37:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 09:37:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 09:37:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 09:37:02,768 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 09:37:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:02,769 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 09:37:02,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:37:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 09:37:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 09:37:02,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:02,770 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 09:37:02,770 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:02,770 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2002831071, now seen corresponding path program 18 times [2018-10-04 09:37:02,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:02,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:02,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:02,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:02,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:03,216 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:03,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:03,218 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:03,229 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:03,278 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 09:37:03,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:03,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:03,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:03,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:37:03,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:37:03,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:37:03,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:03,359 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 09:37:03,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:03,401 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 09:37:03,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:37:03,402 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 09:37:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:03,402 INFO L225 Difference]: With dead ends: 25 [2018-10-04 09:37:03,403 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:37:03,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 6 [2018-10-04 09:37:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:37:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:37:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:37:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 09:37:03,407 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 09:37:03,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:03,407 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 09:37:03,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:37:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 09:37:03,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:37:03,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:03,408 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 09:37:03,409 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:03,409 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1958223032, now seen corresponding path program 19 times [2018-10-04 09:37:03,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:03,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:03,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:03,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:03,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:03,672 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:03,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:03,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:03,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:03,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:03,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:03,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:37:03,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:37:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:37:03,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:03,914 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 09:37:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:03,955 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 09:37:03,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:37:03,956 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 09:37:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:03,956 INFO L225 Difference]: With dead ends: 26 [2018-10-04 09:37:03,957 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 09:37:03,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 7 [2018-10-04 09:37:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 09:37:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 09:37:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 09:37:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 09:37:03,959 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 09:37:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:03,960 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 09:37:03,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:37:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 09:37:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 09:37:03,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:03,961 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 09:37:03,961 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:03,961 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash -575373823, now seen corresponding path program 20 times [2018-10-04 09:37:03,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:03,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:03,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:03,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:03,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:04,608 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:04,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:04,643 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:04,652 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:04,681 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:04,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:04,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:04,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:04,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:37:04,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:37:04,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:37:04,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:04,759 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 09:37:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:04,797 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 09:37:04,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:37:04,799 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 09:37:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:04,799 INFO L225 Difference]: With dead ends: 27 [2018-10-04 09:37:04,799 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 09:37:04,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 8 [2018-10-04 09:37:04,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 09:37:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 09:37:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 09:37:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 09:37:04,802 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 09:37:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:04,803 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 09:37:04,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:37:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 09:37:04,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 09:37:04,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:04,804 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 09:37:04,804 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:04,804 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash -656721304, now seen corresponding path program 21 times [2018-10-04 09:37:04,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:04,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:04,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:04,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:04,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:05,123 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:05,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:05,192 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:05,200 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:05,241 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 09:37:05,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:05,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:05,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:05,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:37:05,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:37:05,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:37:05,324 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:05,324 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 09:37:05,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:05,368 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 09:37:05,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:37:05,369 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 09:37:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:05,370 INFO L225 Difference]: With dead ends: 28 [2018-10-04 09:37:05,370 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 09:37:05,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 9 [2018-10-04 09:37:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 09:37:05,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 09:37:05,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 09:37:05,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 09:37:05,374 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 09:37:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:05,374 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 09:37:05,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:37:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 09:37:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 09:37:05,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:05,375 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 09:37:05,375 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:05,376 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:05,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1116474081, now seen corresponding path program 22 times [2018-10-04 09:37:05,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:05,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:05,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:05,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:05,664 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:05,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:05,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:05,720 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:05,763 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:05,763 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:05,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:06,248 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:06,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:37:06,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:37:06,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:37:06,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:06,249 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 09:37:06,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:06,466 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 09:37:06,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:37:06,470 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 09:37:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:06,471 INFO L225 Difference]: With dead ends: 29 [2018-10-04 09:37:06,471 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:37:06,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.1s impTime 10 [2018-10-04 09:37:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:37:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:37:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:37:06,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 09:37:06,474 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 09:37:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:06,475 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 09:37:06,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:37:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 09:37:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:37:06,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:06,476 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 09:37:06,476 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:06,476 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:06,476 INFO L82 PathProgramCache]: Analyzing trace with hash 250956168, now seen corresponding path program 23 times [2018-10-04 09:37:06,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:06,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:06,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:06,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:06,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:06,784 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:06,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:06,846 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:06,855 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:06,934 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 09:37:06,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:06,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:07,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:07,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:37:07,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:37:07,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:37:07,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:07,050 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 09:37:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:07,087 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 09:37:07,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:37:07,088 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 09:37:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:07,089 INFO L225 Difference]: With dead ends: 30 [2018-10-04 09:37:07,089 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 09:37:07,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 11 [2018-10-04 09:37:07,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 09:37:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 09:37:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 09:37:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 09:37:07,093 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 09:37:07,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:07,094 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 09:37:07,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:37:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 09:37:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 09:37:07,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:07,095 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 09:37:07,095 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:07,095 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash -810295359, now seen corresponding path program 24 times [2018-10-04 09:37:07,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:07,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:07,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:07,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:07,321 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:07,412 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:07,412 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:07,419 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:07,462 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:37:07,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:07,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:07,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:07,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:37:07,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:37:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:37:07,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:07,665 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 09:37:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:07,758 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 09:37:07,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:37:07,758 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 09:37:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:07,759 INFO L225 Difference]: With dead ends: 31 [2018-10-04 09:37:07,759 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 09:37:07,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 12 [2018-10-04 09:37:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 09:37:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 09:37:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 09:37:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 09:37:07,763 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 09:37:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:07,764 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 09:37:07,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:37:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 09:37:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 09:37:07,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:07,765 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 09:37:07,765 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:07,765 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash 650645672, now seen corresponding path program 25 times [2018-10-04 09:37:07,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:07,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:07,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:07,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:08,082 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:08,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:08,242 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:08,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:08,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:08,414 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:08,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:37:08,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:37:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:37:08,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:08,415 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 09:37:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:08,467 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 09:37:08,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:37:08,468 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 09:37:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:08,468 INFO L225 Difference]: With dead ends: 32 [2018-10-04 09:37:08,469 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 09:37:08,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 13 [2018-10-04 09:37:08,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 09:37:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 09:37:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 09:37:08,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 09:37:08,472 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 09:37:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:08,472 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 09:37:08,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:37:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 09:37:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 09:37:08,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:08,473 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 09:37:08,473 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:08,473 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:08,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1304822623, now seen corresponding path program 26 times [2018-10-04 09:37:08,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:08,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:08,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:08,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:08,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:09,965 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:10,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:10,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:10,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:10,202 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:10,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:10,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:10,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:10,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:37:10,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:37:10,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:37:10,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:10,308 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 09:37:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:10,390 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 09:37:10,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:37:10,391 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 09:37:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:10,392 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:37:10,392 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:37:10,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 14 [2018-10-04 09:37:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:37:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:37:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:37:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 09:37:10,397 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 09:37:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:10,397 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 09:37:10,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:37:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 09:37:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:37:10,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:10,398 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 09:37:10,398 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:10,398 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1794797624, now seen corresponding path program 27 times [2018-10-04 09:37:10,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:10,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:10,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:10,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:10,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:10,841 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:11,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:11,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:11,049 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:11,098 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 09:37:11,098 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:11,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:11,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:11,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:37:11,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:37:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:37:11,219 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:11,219 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 09:37:11,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:11,329 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 09:37:11,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:37:11,330 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 09:37:11,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:11,330 INFO L225 Difference]: With dead ends: 34 [2018-10-04 09:37:11,330 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 09:37:11,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 15 [2018-10-04 09:37:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 09:37:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 09:37:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 09:37:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 09:37:11,335 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 09:37:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:11,335 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 09:37:11,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:37:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 09:37:11,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 09:37:11,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:11,336 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 09:37:11,336 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:11,336 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:11,336 INFO L82 PathProgramCache]: Analyzing trace with hash 195846529, now seen corresponding path program 28 times [2018-10-04 09:37:11,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:11,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:11,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:11,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:11,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:11,743 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:11,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:11,823 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:11,837 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:11,881 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:11,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:11,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:11,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:11,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:37:11,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:37:11,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:37:11,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:11,978 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 09:37:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:12,025 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 09:37:12,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:37:12,025 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 09:37:12,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:12,026 INFO L225 Difference]: With dead ends: 35 [2018-10-04 09:37:12,026 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 09:37:12,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 16 [2018-10-04 09:37:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 09:37:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 09:37:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 09:37:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 09:37:12,031 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 09:37:12,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:12,032 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 09:37:12,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:37:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 09:37:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 09:37:12,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:12,033 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 09:37:12,033 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:12,033 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1776273128, now seen corresponding path program 29 times [2018-10-04 09:37:12,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:12,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:12,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:12,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:12,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:12,490 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:12,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:12,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:12,733 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:12,790 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 09:37:12,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:12,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:12,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:12,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:37:12,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:37:12,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:37:12,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:12,897 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 09:37:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:12,942 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 09:37:12,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:37:12,942 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 09:37:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:12,943 INFO L225 Difference]: With dead ends: 36 [2018-10-04 09:37:12,943 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 09:37:12,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 17 [2018-10-04 09:37:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 09:37:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 09:37:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 09:37:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 09:37:12,948 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 09:37:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:12,949 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 09:37:12,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:37:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 09:37:12,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 09:37:12,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:12,950 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 09:37:12,950 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:12,950 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -770109855, now seen corresponding path program 30 times [2018-10-04 09:37:12,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:12,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:12,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:12,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:12,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:13,547 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:13,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:13,818 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:13,835 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:13,894 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 09:37:13,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:13,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:14,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:14,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:37:14,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:37:14,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:37:14,201 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:14,201 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 09:37:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:14,240 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 09:37:14,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:37:14,240 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 09:37:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:14,241 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:37:14,241 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:37:14,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 18 [2018-10-04 09:37:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:37:14,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:37:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:37:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 09:37:14,245 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 09:37:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:14,245 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 09:37:14,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:37:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 09:37:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:37:14,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:14,246 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 09:37:14,246 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:14,246 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1896396296, now seen corresponding path program 31 times [2018-10-04 09:37:14,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:14,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:14,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:14,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:14,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:14,655 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:14,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:14,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:14,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:14,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:15,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:15,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:37:15,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:37:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:37:15,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:15,310 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 09:37:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:15,363 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 09:37:15,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:37:15,364 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 09:37:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:15,364 INFO L225 Difference]: With dead ends: 38 [2018-10-04 09:37:15,364 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 09:37:15,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.3s impTime 19 [2018-10-04 09:37:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 09:37:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 09:37:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 09:37:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 09:37:15,369 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 09:37:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:15,369 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 09:37:15,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:37:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 09:37:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 09:37:15,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:15,370 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 09:37:15,370 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:15,370 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1341258943, now seen corresponding path program 32 times [2018-10-04 09:37:15,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:15,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:15,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:15,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:15,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:15,719 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:16,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:16,064 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:16,075 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:16,122 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:16,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:16,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:16,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:16,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:37:16,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:37:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:37:16,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:16,206 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 09:37:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:16,264 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 09:37:16,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:37:16,264 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 09:37:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:16,265 INFO L225 Difference]: With dead ends: 39 [2018-10-04 09:37:16,265 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 09:37:16,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 20 [2018-10-04 09:37:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 09:37:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 09:37:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 09:37:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 09:37:16,269 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 09:37:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:16,269 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 09:37:16,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:37:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 09:37:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 09:37:16,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:16,270 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 09:37:16,270 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:16,270 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:16,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1370643752, now seen corresponding path program 33 times [2018-10-04 09:37:16,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:16,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:16,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:16,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:16,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:16,862 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:17,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:17,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:17,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:17,179 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 09:37:17,180 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:17,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:17,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:17,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:37:17,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:37:17,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:37:17,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:17,273 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 09:37:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:17,346 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 09:37:17,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:37:17,346 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 09:37:17,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:17,347 INFO L225 Difference]: With dead ends: 40 [2018-10-04 09:37:17,347 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 09:37:17,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 21 [2018-10-04 09:37:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 09:37:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 09:37:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 09:37:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 09:37:17,351 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 09:37:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:17,351 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 09:37:17,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:37:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 09:37:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 09:37:17,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:17,352 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 09:37:17,352 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:17,352 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash -459718623, now seen corresponding path program 34 times [2018-10-04 09:37:17,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:17,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:17,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:17,353 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:17,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:18,322 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:18,707 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:18,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:18,710 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:18,718 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:18,768 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:18,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:18,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:18,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:18,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:37:18,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:37:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:37:18,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:18,856 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 09:37:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:18,919 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 09:37:18,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:37:18,919 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 09:37:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:18,920 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:37:18,920 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:37:18,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 7 [2018-10-04 09:37:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:37:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:37:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:37:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 09:37:18,924 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 09:37:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:18,925 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 09:37:18,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:37:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 09:37:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:37:18,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:18,925 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 09:37:18,926 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:18,926 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:18,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1366377400, now seen corresponding path program 35 times [2018-10-04 09:37:18,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:18,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:18,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:18,927 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:18,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:19,204 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:19,623 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:19,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:19,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:19,671 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:19,741 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 09:37:19,741 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:19,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:19,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:19,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:37:19,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:37:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:37:19,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:19,864 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 09:37:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:19,948 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 09:37:19,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:37:19,949 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 09:37:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:19,950 INFO L225 Difference]: With dead ends: 42 [2018-10-04 09:37:19,950 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 09:37:19,950 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 8 [2018-10-04 09:37:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 09:37:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 09:37:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 09:37:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 09:37:19,953 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 09:37:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:19,954 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 09:37:19,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:37:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 09:37:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 09:37:19,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:19,954 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 09:37:19,955 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:19,955 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:19,955 INFO L82 PathProgramCache]: Analyzing trace with hash 591971585, now seen corresponding path program 36 times [2018-10-04 09:37:19,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:19,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:19,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:19,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:19,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:20,280 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:20,687 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:20,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:20,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:20,938 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:21,005 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:37:21,005 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:21,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:21,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:21,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:37:21,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:37:21,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:37:21,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:21,636 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 09:37:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:21,779 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 09:37:21,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:37:21,780 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 09:37:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:21,780 INFO L225 Difference]: With dead ends: 43 [2018-10-04 09:37:21,780 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 09:37:21,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.6s impTime 9 [2018-10-04 09:37:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 09:37:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 09:37:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 09:37:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 09:37:21,782 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 09:37:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:21,782 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 09:37:21,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:37:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 09:37:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 09:37:21,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:21,783 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 09:37:21,783 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:21,783 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:21,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1171247976, now seen corresponding path program 37 times [2018-10-04 09:37:21,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:21,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:21,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:21,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:21,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:22,415 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:22,827 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:22,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:22,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:22,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:22,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:23,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:23,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:37:23,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:37:23,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:37:23,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:23,260 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 09:37:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:23,378 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 09:37:23,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:37:23,379 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 09:37:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:23,379 INFO L225 Difference]: With dead ends: 44 [2018-10-04 09:37:23,379 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 09:37:23,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 10 [2018-10-04 09:37:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 09:37:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 09:37:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 09:37:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 09:37:23,382 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 09:37:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:23,382 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 09:37:23,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:37:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 09:37:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 09:37:23,383 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:23,383 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 09:37:23,384 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:23,384 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:23,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1948946913, now seen corresponding path program 38 times [2018-10-04 09:37:23,384 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:23,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:23,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:23,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:23,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:24,382 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:24,766 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:24,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:24,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:24,908 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:24,965 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:24,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:24,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:25,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:25,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:37:25,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:37:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:37:25,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:25,071 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 09:37:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:25,138 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 09:37:25,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:37:25,138 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 09:37:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:25,139 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:37:25,139 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:37:25,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 11 [2018-10-04 09:37:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:37:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:37:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:37:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 09:37:25,142 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 09:37:25,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:25,142 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 09:37:25,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:37:25,143 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 09:37:25,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:37:25,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:25,143 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 09:37:25,143 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:25,143 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash 287810184, now seen corresponding path program 39 times [2018-10-04 09:37:25,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:25,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:25,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:25,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:25,408 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:25,597 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:25,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:25,697 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:25,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:25,769 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 09:37:25,770 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:25,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:25,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:25,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:37:25,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:37:25,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:37:25,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:25,873 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 09:37:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:25,968 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 09:37:25,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:37:25,969 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 09:37:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:25,969 INFO L225 Difference]: With dead ends: 46 [2018-10-04 09:37:25,969 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 09:37:25,970 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 12 [2018-10-04 09:37:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 09:37:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 09:37:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 09:37:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 09:37:25,971 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 09:37:25,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:25,971 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 09:37:25,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:37:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 09:37:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 09:37:25,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:25,972 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 09:37:25,972 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:25,972 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 332179137, now seen corresponding path program 40 times [2018-10-04 09:37:25,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:25,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:25,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:25,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:26,847 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:27,296 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:27,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:27,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:27,524 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:27,598 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:27,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:27,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:27,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:27,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:37:27,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:37:27,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:37:27,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:27,743 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 09:37:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:27,848 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 09:37:27,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:37:27,849 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 09:37:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:27,850 INFO L225 Difference]: With dead ends: 47 [2018-10-04 09:37:27,850 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 09:37:27,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 13 [2018-10-04 09:37:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 09:37:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 09:37:27,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 09:37:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 09:37:27,853 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 09:37:27,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:27,853 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 09:37:27,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:37:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 09:37:27,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 09:37:27,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:27,854 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 09:37:27,854 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:27,854 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1707616680, now seen corresponding path program 41 times [2018-10-04 09:37:27,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:27,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:27,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:27,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:27,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:28,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:28,630 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:28,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:28,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:28,881 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:28,973 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 09:37:28,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:28,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:29,107 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:29,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:37:29,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:37:29,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:37:29,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:29,108 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 09:37:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:29,404 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 09:37:29,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:37:29,405 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 09:37:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:29,406 INFO L225 Difference]: With dead ends: 48 [2018-10-04 09:37:29,406 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 09:37:29,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 14 [2018-10-04 09:37:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 09:37:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 09:37:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 09:37:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 09:37:29,408 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 09:37:29,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:29,409 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 09:37:29,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:37:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 09:37:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 09:37:29,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:29,409 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 09:37:29,409 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:29,409 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:29,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1396507553, now seen corresponding path program 42 times [2018-10-04 09:37:29,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:29,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:29,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:29,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:29,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:29,697 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:30,060 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:30,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:30,309 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 [2018-10-04 09:37:30,323 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:30,399 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 09:37:30,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:30,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:30,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:30,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:37:30,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:37:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:37:30,578 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:30,578 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 09:37:30,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:30,651 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 09:37:30,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:37:30,651 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 09:37:30,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:30,652 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:37:30,652 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:37:30,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 15 [2018-10-04 09:37:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:37:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:37:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:37:30,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 09:37:30,655 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 09:37:30,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:30,655 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 09:37:30,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:37:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 09:37:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:37:30,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:30,656 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 09:37:30,656 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:30,656 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:30,657 INFO L82 PathProgramCache]: Analyzing trace with hash 342059208, now seen corresponding path program 43 times [2018-10-04 09:37:30,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:30,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:30,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:30,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:30,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:30,933 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:31,708 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:32,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:32,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:32,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:32,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:32,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:32,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:37:32,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:37:32,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:37:32,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:32,490 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 09:37:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:32,646 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 09:37:32,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:37:32,646 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 09:37:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:32,647 INFO L225 Difference]: With dead ends: 50 [2018-10-04 09:37:32,647 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 09:37:32,648 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 16 [2018-10-04 09:37:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 09:37:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 09:37:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 09:37:32,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 09:37:32,650 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 09:37:32,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:32,650 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 09:37:32,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:37:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 09:37:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 09:37:32,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:32,651 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 09:37:32,651 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:32,651 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2013898881, now seen corresponding path program 44 times [2018-10-04 09:37:32,651 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:32,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:32,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:32,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:32,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:32,958 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:33,313 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:33,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:33,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:33,671 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:33,742 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:33,742 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:33,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:33,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:33,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:37:33,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:37:33,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:37:33,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:33,858 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 09:37:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:33,940 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 09:37:33,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:37:33,941 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 09:37:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:33,941 INFO L225 Difference]: With dead ends: 51 [2018-10-04 09:37:33,942 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 09:37:33,942 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 17 [2018-10-04 09:37:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 09:37:33,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 09:37:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 09:37:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 09:37:33,945 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 09:37:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:33,946 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 09:37:33,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:37:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 09:37:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 09:37:33,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:33,946 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 09:37:33,947 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:33,947 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:33,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1993646104, now seen corresponding path program 45 times [2018-10-04 09:37:33,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:33,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:33,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:33,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:33,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:34,406 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:35,038 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:35,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:35,169 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:35,179 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:35,255 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 09:37:35,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:35,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:35,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:35,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:37:35,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:37:35,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:37:35,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:35,450 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 09:37:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:35,831 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 09:37:35,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:37:35,831 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 09:37:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:35,832 INFO L225 Difference]: With dead ends: 52 [2018-10-04 09:37:35,832 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 09:37:35,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 18 [2018-10-04 09:37:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 09:37:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 09:37:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 09:37:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 09:37:35,835 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 09:37:35,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:35,835 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 09:37:35,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:37:35,835 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 09:37:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 09:37:35,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:35,836 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 09:37:35,836 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:35,836 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:35,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1673489055, now seen corresponding path program 46 times [2018-10-04 09:37:35,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:35,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:35,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:35,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:35,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:36,146 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:36,546 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:37,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:37,255 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:37,264 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:37,334 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:37,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:37,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:37,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:37,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:37:37,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:37:37,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:37:37,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:37,471 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 09:37:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:37,567 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 09:37:37,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:37:37,567 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 09:37:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:37,568 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:37:37,568 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:37:37,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 19 [2018-10-04 09:37:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:37:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:37:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:37:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 09:37:37,570 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 09:37:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:37,570 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 09:37:37,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:37:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 09:37:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:37:37,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:37,571 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 09:37:37,571 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:37,571 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:37,571 INFO L82 PathProgramCache]: Analyzing trace with hash -338555128, now seen corresponding path program 47 times [2018-10-04 09:37:37,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:37,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:37,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:37,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:37,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:38,210 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:38,395 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:38,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:38,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:38,699 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:38,787 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 09:37:38,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:38,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:38,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:38,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:37:38,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:37:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:37:38,904 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:38,904 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 09:37:38,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:38,990 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 09:37:38,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:37:38,991 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 09:37:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:38,992 INFO L225 Difference]: With dead ends: 54 [2018-10-04 09:37:38,992 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 09:37:38,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 20 [2018-10-04 09:37:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 09:37:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 09:37:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 09:37:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 09:37:38,995 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 09:37:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:38,995 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 09:37:38,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:37:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 09:37:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 09:37:38,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:38,996 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 09:37:38,996 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:38,996 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:38,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1905276351, now seen corresponding path program 48 times [2018-10-04 09:37:38,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:38,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:38,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:38,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:38,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:39,274 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:39,523 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:39,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:39,716 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:39,724 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:39,805 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:37:39,805 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:39,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:39,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:39,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:37:39,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:37:39,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:37:39,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:39,922 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 09:37:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:39,988 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 09:37:39,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:37:39,988 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 09:37:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:39,989 INFO L225 Difference]: With dead ends: 55 [2018-10-04 09:37:39,989 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 09:37:39,989 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 21 [2018-10-04 09:37:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 09:37:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 09:37:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 09:37:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 09:37:39,992 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 09:37:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:39,993 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 09:37:39,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:37:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 09:37:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 09:37:39,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:39,993 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 09:37:39,994 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:39,994 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1065973288, now seen corresponding path program 49 times [2018-10-04 09:37:39,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:39,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:39,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:39,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:39,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:40,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:40,563 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:40,809 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:40,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:40,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:40,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:40,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:41,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:41,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:37:41,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:37:41,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:37:41,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:41,050 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 09:37:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:41,149 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 09:37:41,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:37:41,150 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 09:37:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:41,150 INFO L225 Difference]: With dead ends: 56 [2018-10-04 09:37:41,150 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 09:37:41,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 7 [2018-10-04 09:37:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 09:37:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 09:37:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 09:37:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 09:37:41,153 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 09:37:41,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:41,154 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 09:37:41,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:37:41,154 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 09:37:41,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 09:37:41,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:41,154 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 09:37:41,155 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:41,155 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:41,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1314568415, now seen corresponding path program 50 times [2018-10-04 09:37:41,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:41,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:41,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:41,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:41,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:41,383 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:41,546 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:41,886 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:41,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:41,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:41,926 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:41,999 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:42,000 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:42,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:42,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:42,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:37:42,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:37:42,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:37:42,187 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:42,187 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 09:37:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:42,316 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 09:37:42,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:37:42,316 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 09:37:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:42,317 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:37:42,317 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:37:42,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 8 [2018-10-04 09:37:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:37:42,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:37:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:37:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 09:37:42,319 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 09:37:42,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:42,319 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 09:37:42,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:37:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 09:37:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:37:42,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:42,320 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 09:37:42,321 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:42,321 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -2096917176, now seen corresponding path program 51 times [2018-10-04 09:37:42,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:42,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:42,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:42,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:42,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:42,655 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:43,069 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:43,669 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:43,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:43,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:43,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:43,861 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 09:37:43,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:43,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:44,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:44,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:37:44,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:37:44,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:37:44,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:44,249 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 09:37:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:44,337 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 09:37:44,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:37:44,338 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 09:37:44,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:44,338 INFO L225 Difference]: With dead ends: 58 [2018-10-04 09:37:44,339 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 09:37:44,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 9 [2018-10-04 09:37:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 09:37:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 09:37:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 09:37:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 09:37:44,341 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 09:37:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:44,341 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 09:37:44,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:37:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 09:37:44,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 09:37:44,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:44,342 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 09:37:44,343 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:44,343 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash -579924991, now seen corresponding path program 52 times [2018-10-04 09:37:44,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:44,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:44,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:44,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:44,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:45,433 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:45,824 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:46,105 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:46,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:46,242 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:46,250 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:46,335 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:46,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:46,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:46,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:46,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:37:46,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:37:46,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:37:46,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:46,451 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 09:37:46,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:46,554 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 09:37:46,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:37:46,554 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 09:37:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:46,555 INFO L225 Difference]: With dead ends: 59 [2018-10-04 09:37:46,555 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 09:37:46,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 10 [2018-10-04 09:37:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 09:37:46,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 09:37:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 09:37:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 09:37:46,558 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 09:37:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:46,558 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 09:37:46,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:37:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 09:37:46,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 09:37:46,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:46,559 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 09:37:46,559 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:46,560 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:46,560 INFO L82 PathProgramCache]: Analyzing trace with hash -797807512, now seen corresponding path program 53 times [2018-10-04 09:37:46,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:46,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:46,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:46,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:46,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:46,815 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:47,496 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:48,108 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:48,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:48,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:48,317 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:37:48,411 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 09:37:48,412 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:48,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:48,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:48,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:37:48,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:37:48,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:37:48,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:48,661 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 09:37:48,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:48,750 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 09:37:48,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:37:48,751 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 09:37:48,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:48,751 INFO L225 Difference]: With dead ends: 60 [2018-10-04 09:37:48,752 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 09:37:48,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 11 [2018-10-04 09:37:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 09:37:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 09:37:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 09:37:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 09:37:48,754 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 09:37:48,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:48,754 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 09:37:48,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:37:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 09:37:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 09:37:48,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:48,755 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 09:37:48,755 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:48,755 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1037768929, now seen corresponding path program 54 times [2018-10-04 09:37:48,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:48,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:48,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:48,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:48,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:49,053 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:49,318 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:49,764 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:49,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:49,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:49,952 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:37:50,047 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 09:37:50,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:50,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:50,223 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:50,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:37:50,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:37:50,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:37:50,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:50,224 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 09:37:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:50,314 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 09:37:50,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:37:50,315 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 09:37:50,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:50,315 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:37:50,316 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:37:50,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 12 [2018-10-04 09:37:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:37:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:37:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:37:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 09:37:50,318 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 09:37:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:50,319 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 09:37:50,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:37:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 09:37:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:37:50,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:50,319 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 09:37:50,320 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:50,320 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:50,320 INFO L82 PathProgramCache]: Analyzing trace with hash 2106063752, now seen corresponding path program 55 times [2018-10-04 09:37:50,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:50,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:50,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:50,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:50,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:50,531 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:50,718 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:51,134 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:51,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:51,415 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:51,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:51,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:51,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:51,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:37:51,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:37:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:37:51,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:51,622 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 09:37:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:51,744 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 09:37:51,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:37:51,744 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 09:37:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:51,745 INFO L225 Difference]: With dead ends: 62 [2018-10-04 09:37:51,745 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 09:37:51,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.9s impTime 13 [2018-10-04 09:37:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 09:37:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 09:37:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 09:37:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 09:37:51,747 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 09:37:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:51,748 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 09:37:51,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:37:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 09:37:51,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 09:37:51,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:51,748 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 09:37:51,749 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:51,749 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash 863464897, now seen corresponding path program 56 times [2018-10-04 09:37:51,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:51,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:51,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:51,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:37:51,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:52,463 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:52,785 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:53,220 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:53,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:53,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:53,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:37:53,570 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:37:53,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:53,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:53,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:53,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:37:53,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:37:53,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:37:53,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:53,711 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 09:37:53,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:53,840 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 09:37:53,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:37:53,841 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 09:37:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:53,842 INFO L225 Difference]: With dead ends: 63 [2018-10-04 09:37:53,842 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 09:37:53,842 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 14 [2018-10-04 09:37:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 09:37:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 09:37:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 09:37:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 09:37:53,845 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 09:37:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:53,845 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 09:37:53,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:37:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 09:37:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 09:37:53,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:53,846 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 09:37:53,846 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:53,847 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash 997606056, now seen corresponding path program 57 times [2018-10-04 09:37:53,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:53,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:53,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:53,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:53,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:54,229 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:54,660 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:55,270 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:55,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:55,644 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:55,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:37:55,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 09:37:55,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:55,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:57,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:57,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:37:57,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:37:57,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:37:57,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:57,318 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 09:37:57,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:57,501 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 09:37:57,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:37:57,502 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 09:37:57,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:57,502 INFO L225 Difference]: With dead ends: 64 [2018-10-04 09:37:57,502 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 09:37:57,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 1.5s impTime 15 [2018-10-04 09:37:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 09:37:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 09:37:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 09:37:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 09:37:57,507 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 09:37:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:57,507 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 09:37:57,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:37:57,508 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 09:37:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 09:37:57,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:57,508 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 09:37:57,508 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:57,508 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash 861014689, now seen corresponding path program 58 times [2018-10-04 09:37:57,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:57,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:57,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:57,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:57,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:57,780 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:58,198 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:58,459 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:37:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:58,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:37:58,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:37:58,887 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:37:58,975 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:37:58,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:37:58,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:37:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:37:59,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:37:59,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:37:59,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:37:59,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:37:59,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:37:59,106 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 09:37:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:37:59,233 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 09:37:59,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:37:59,234 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 09:37:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:37:59,235 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:37:59,235 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:37:59,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 16 [2018-10-04 09:37:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:37:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:37:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:37:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 09:37:59,237 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 09:37:59,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:37:59,238 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 09:37:59,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:37:59,238 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 09:37:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:37:59,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:37:59,238 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 09:37:59,239 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:37:59,239 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:37:59,239 INFO L82 PathProgramCache]: Analyzing trace with hash 921649608, now seen corresponding path program 59 times [2018-10-04 09:37:59,239 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:37:59,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:37:59,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:59,240 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:37:59,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:37:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:37:59,573 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:37:59,962 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:00,549 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:01,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:01,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:01,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:01,132 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 09:38:01,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:01,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:01,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:01,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:38:01,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:38:01,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:38:01,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:01,329 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 09:38:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:01,463 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 09:38:01,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:38:01,464 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 09:38:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:01,464 INFO L225 Difference]: With dead ends: 66 [2018-10-04 09:38:01,465 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 09:38:01,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 17 [2018-10-04 09:38:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 09:38:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 09:38:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 09:38:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 09:38:01,467 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 09:38:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:01,467 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 09:38:01,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:38:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 09:38:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 09:38:01,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:01,468 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 09:38:01,468 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:01,468 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:01,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1493635199, now seen corresponding path program 60 times [2018-10-04 09:38:01,468 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:01,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:01,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:01,469 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:01,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:01,749 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:01,912 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:02,250 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:02,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:02,904 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:02,911 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:03,022 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:38:03,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:03,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:03,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:03,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:03,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:38:03,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:38:03,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:38:03,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:03,175 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 09:38:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:03,280 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 09:38:03,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:38:03,280 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 09:38:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:03,281 INFO L225 Difference]: With dead ends: 67 [2018-10-04 09:38:03,281 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 09:38:03,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 18 [2018-10-04 09:38:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 09:38:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 09:38:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 09:38:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 09:38:03,283 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 09:38:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:03,283 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 09:38:03,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:38:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 09:38:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 09:38:03,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:03,284 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 09:38:03,284 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:03,284 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:03,284 INFO L82 PathProgramCache]: Analyzing trace with hash 941947112, now seen corresponding path program 61 times [2018-10-04 09:38:03,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:03,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:03,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:03,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:03,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:03,521 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:03,783 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:04,010 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:04,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:04,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:04,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:04,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:04,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:04,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:38:04,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:38:04,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:38:04,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:04,537 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 09:38:04,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:04,629 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 09:38:04,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:38:04,630 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 09:38:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:04,630 INFO L225 Difference]: With dead ends: 68 [2018-10-04 09:38:04,630 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 09:38:04,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 19 [2018-10-04 09:38:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 09:38:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 09:38:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 09:38:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 09:38:04,633 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 09:38:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:04,633 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 09:38:04,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:38:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 09:38:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 09:38:04,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:04,634 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 09:38:04,634 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:04,634 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:04,634 INFO L82 PathProgramCache]: Analyzing trace with hash -864412575, now seen corresponding path program 62 times [2018-10-04 09:38:04,635 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:04,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:04,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:04,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:04,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:04,878 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:05,123 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:05,364 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:05,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:05,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:05,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:05,809 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:05,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:05,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:06,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:06,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:38:06,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:38:06,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:38:06,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:06,183 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 09:38:06,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:06,374 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 09:38:06,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:38:06,374 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 09:38:06,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:06,375 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:38:06,375 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:38:06,375 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 20 [2018-10-04 09:38:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:38:06,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:38:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:38:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 09:38:06,377 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 09:38:06,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:06,377 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 09:38:06,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:38:06,377 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 09:38:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:38:06,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:06,378 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 09:38:06,378 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:06,378 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1026988024, now seen corresponding path program 63 times [2018-10-04 09:38:06,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:06,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:06,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:06,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:06,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:06,589 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:06,787 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:07,184 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:07,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:07,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:07,971 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:08,142 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 09:38:08,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:08,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:08,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:08,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:38:08,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:38:08,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:38:08,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:08,303 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 09:38:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:08,519 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 09:38:08,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:38:08,522 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 09:38:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:08,522 INFO L225 Difference]: With dead ends: 70 [2018-10-04 09:38:08,522 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 09:38:08,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 21 [2018-10-04 09:38:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 09:38:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 09:38:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 09:38:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 09:38:08,524 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 09:38:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:08,525 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 09:38:08,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:38:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 09:38:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 09:38:08,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:08,526 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 09:38:08,526 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:08,526 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:08,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1771859647, now seen corresponding path program 64 times [2018-10-04 09:38:08,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:08,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:08,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:08,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:08,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:08,765 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:09,174 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:09,748 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:10,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:10,496 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:10,509 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:10,607 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:10,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:10,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:10,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:10,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:38:10,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:38:10,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:38:10,853 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:10,853 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 09:38:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:10,983 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 09:38:10,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:38:10,983 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 09:38:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:10,984 INFO L225 Difference]: With dead ends: 71 [2018-10-04 09:38:10,984 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 09:38:10,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 22 [2018-10-04 09:38:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 09:38:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 09:38:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 09:38:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 09:38:10,986 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 09:38:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:10,987 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 09:38:10,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:38:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 09:38:10,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 09:38:10,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:10,987 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 09:38:10,987 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:10,987 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:10,987 INFO L82 PathProgramCache]: Analyzing trace with hash 906923816, now seen corresponding path program 65 times [2018-10-04 09:38:10,988 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:10,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:10,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:10,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:10,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:11,232 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:11,530 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:11,827 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:12,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:12,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:12,623 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:12,755 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 09:38:12,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:12,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:12,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:12,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:38:12,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:38:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:38:12,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:12,975 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 09:38:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:13,125 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 09:38:13,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:38:13,125 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 09:38:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:13,126 INFO L225 Difference]: With dead ends: 72 [2018-10-04 09:38:13,126 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 09:38:13,126 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 23 [2018-10-04 09:38:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 09:38:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 09:38:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 09:38:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 09:38:13,128 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 09:38:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:13,128 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 09:38:13,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:38:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 09:38:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 09:38:13,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:13,129 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 09:38:13,129 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:13,129 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1950134751, now seen corresponding path program 66 times [2018-10-04 09:38:13,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:13,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:13,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:13,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:13,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:13,458 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:13,837 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:14,437 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:14,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:14,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:14,661 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:14,783 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 09:38:14,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:14,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:16,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:16,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:38:16,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:38:16,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:38:16,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:16,049 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 09:38:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:16,142 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 09:38:16,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:38:16,143 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 09:38:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:16,144 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:38:16,144 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:38:16,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.2s impTime 24 [2018-10-04 09:38:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:38:16,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:38:16,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:38:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 09:38:16,146 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 09:38:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:16,146 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 09:38:16,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:38:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 09:38:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:38:16,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:16,147 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 09:38:16,147 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:16,147 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:16,147 INFO L82 PathProgramCache]: Analyzing trace with hash -324637112, now seen corresponding path program 67 times [2018-10-04 09:38:16,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:16,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:16,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:16,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:16,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:16,402 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:16,816 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:17,417 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:18,665 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:18,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:18,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:18,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:18,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:19,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:19,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:38:19,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:38:19,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:38:19,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:19,363 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 09:38:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:19,490 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 09:38:19,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:38:19,490 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 09:38:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:19,491 INFO L225 Difference]: With dead ends: 74 [2018-10-04 09:38:19,491 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 09:38:19,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.2s impTime 8 [2018-10-04 09:38:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 09:38:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 09:38:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 09:38:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 09:38:19,493 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 09:38:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:19,493 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 09:38:19,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:38:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 09:38:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 09:38:19,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:19,494 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 09:38:19,494 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:19,494 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:19,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1473817855, now seen corresponding path program 68 times [2018-10-04 09:38:19,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:19,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:19,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:19,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:19,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:19,709 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:20,066 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:20,605 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:21,559 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:21,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:21,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:21,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:21,696 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:21,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:21,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:21,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:21,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:38:21,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:38:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:38:21,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:21,844 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 09:38:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:22,007 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 09:38:22,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:38:22,007 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 09:38:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:22,008 INFO L225 Difference]: With dead ends: 75 [2018-10-04 09:38:22,008 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 09:38:22,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 9 [2018-10-04 09:38:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 09:38:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 09:38:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 09:38:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 09:38:22,012 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 09:38:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:22,012 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 09:38:22,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:38:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 09:38:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 09:38:22,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:22,013 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 09:38:22,013 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:22,013 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:22,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1556284776, now seen corresponding path program 69 times [2018-10-04 09:38:22,013 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:22,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:22,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:22,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:22,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:22,267 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:22,670 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:23,460 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:24,403 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:24,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:24,527 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:24,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:24,697 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 09:38:24,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:24,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:24,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:24,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:38:24,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:38:24,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:38:24,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:24,846 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 09:38:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:25,046 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 09:38:25,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:38:25,047 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 09:38:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:25,047 INFO L225 Difference]: With dead ends: 76 [2018-10-04 09:38:25,048 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 09:38:25,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.2s impTime 10 [2018-10-04 09:38:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 09:38:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 09:38:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 09:38:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 09:38:25,051 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 09:38:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:25,051 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 09:38:25,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:38:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 09:38:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 09:38:25,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:25,052 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 09:38:25,052 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:25,053 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1000185825, now seen corresponding path program 70 times [2018-10-04 09:38:25,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:25,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:25,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:25,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:25,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:25,631 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:25,997 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:26,364 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:26,664 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:26,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:26,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:26,748 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:26,856 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:26,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:26,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:27,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:27,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:38:27,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:38:27,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:38:27,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:27,029 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 09:38:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:27,245 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 09:38:27,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:38:27,246 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 09:38:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:27,247 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:38:27,247 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:38:27,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 11 [2018-10-04 09:38:27,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:38:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:38:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:38:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 09:38:27,251 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 09:38:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:27,251 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 09:38:27,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:38:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 09:38:27,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:38:27,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:27,252 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 09:38:27,252 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:27,252 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:27,252 INFO L82 PathProgramCache]: Analyzing trace with hash 940987528, now seen corresponding path program 71 times [2018-10-04 09:38:27,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:27,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:27,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:27,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:27,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:27,484 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:27,670 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:28,345 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:29,347 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:29,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:29,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:29,601 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:29,737 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 09:38:29,737 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:29,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:30,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:30,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:30,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:38:30,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:38:30,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:38:30,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:30,058 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-04 09:38:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:30,196 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 09:38:30,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:38:30,196 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-04 09:38:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:30,197 INFO L225 Difference]: With dead ends: 78 [2018-10-04 09:38:30,197 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 09:38:30,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 12 [2018-10-04 09:38:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 09:38:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 09:38:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 09:38:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 09:38:30,201 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 09:38:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:30,201 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 09:38:30,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:38:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 09:38:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 09:38:30,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:30,202 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 09:38:30,202 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:30,202 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash -894159679, now seen corresponding path program 72 times [2018-10-04 09:38:30,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:30,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:30,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:30,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:30,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:30,429 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:30,793 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:31,276 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:32,213 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:32,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:32,520 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:32,527 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:32,679 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:38:32,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:32,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:32,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:32,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:38:32,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:38:32,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:38:32,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:32,856 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-04 09:38:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:33,034 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 09:38:33,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:38:33,035 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-04 09:38:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:33,036 INFO L225 Difference]: With dead ends: 79 [2018-10-04 09:38:33,036 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 09:38:33,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 13 [2018-10-04 09:38:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 09:38:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 09:38:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 09:38:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 09:38:33,039 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-04 09:38:33,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:33,040 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 09:38:33,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:38:33,040 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 09:38:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 09:38:33,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:33,040 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-04 09:38:33,041 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:33,041 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:33,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1949148248, now seen corresponding path program 73 times [2018-10-04 09:38:33,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:33,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:33,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:33,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:33,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:33,547 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:33,949 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:34,546 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:35,481 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:35,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:35,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:35,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:35,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:36,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:36,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:38:36,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:38:36,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:38:36,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:36,107 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-04 09:38:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:36,279 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-04 09:38:36,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:38:36,279 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-04 09:38:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:36,280 INFO L225 Difference]: With dead ends: 80 [2018-10-04 09:38:36,280 INFO L226 Difference]: Without dead ends: 78 [2018-10-04 09:38:36,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.5s impTime 14 [2018-10-04 09:38:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-04 09:38:36,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-04 09:38:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-04 09:38:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-04 09:38:36,283 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-04 09:38:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:36,283 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-04 09:38:36,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:38:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-04 09:38:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-04 09:38:36,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:36,284 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-04 09:38:36,284 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:36,284 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:36,284 INFO L82 PathProgramCache]: Analyzing trace with hash -294055519, now seen corresponding path program 74 times [2018-10-04 09:38:36,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:36,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:36,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:36,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:36,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:36,509 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:36,887 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:37,425 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:38,413 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:39,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:39,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:39,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:39,024 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:39,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:39,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:39,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:39,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:39,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:38:39,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:38:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:38:39,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:39,310 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-04 09:38:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:39,477 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 09:38:39,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:38:39,478 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-04 09:38:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:39,478 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:38:39,478 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:38:39,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 15 [2018-10-04 09:38:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:38:39,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:38:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:38:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 09:38:39,481 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-04 09:38:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:39,481 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 09:38:39,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:38:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 09:38:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:38:39,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:39,482 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-04 09:38:39,482 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:39,482 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:39,482 INFO L82 PathProgramCache]: Analyzing trace with hash -525788472, now seen corresponding path program 75 times [2018-10-04 09:38:39,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:39,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:39,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:39,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:39,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:39,714 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:40,126 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:40,689 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:41,743 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:42,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:42,259 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:42,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:38:42,411 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-04 09:38:42,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:42,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:42,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:42,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:38:42,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:38:42,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:38:42,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:42,649 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-04 09:38:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:43,387 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-04 09:38:43,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:38:43,387 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-04 09:38:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:43,388 INFO L225 Difference]: With dead ends: 82 [2018-10-04 09:38:43,388 INFO L226 Difference]: Without dead ends: 80 [2018-10-04 09:38:43,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 16 [2018-10-04 09:38:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-04 09:38:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-04 09:38:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-04 09:38:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-04 09:38:43,391 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-04 09:38:43,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:43,391 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-04 09:38:43,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:38:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-04 09:38:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-04 09:38:43,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:43,392 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-04 09:38:43,392 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:43,392 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:43,392 INFO L82 PathProgramCache]: Analyzing trace with hash 880424577, now seen corresponding path program 76 times [2018-10-04 09:38:43,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:43,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:43,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:43,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:43,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:43,859 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:44,237 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:44,850 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:45,821 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:46,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:46,396 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:46,404 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:38:46,511 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:38:46,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:46,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:46,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:46,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:38:46,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:38:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:38:46,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:46,665 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-04 09:38:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:47,114 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 09:38:47,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:38:47,114 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-04 09:38:47,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:47,115 INFO L225 Difference]: With dead ends: 83 [2018-10-04 09:38:47,115 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 09:38:47,116 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 17 [2018-10-04 09:38:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 09:38:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 09:38:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 09:38:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 09:38:47,118 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-04 09:38:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:47,118 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 09:38:47,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:38:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 09:38:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 09:38:47,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:47,119 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-04 09:38:47,119 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:47,119 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1523356136, now seen corresponding path program 77 times [2018-10-04 09:38:47,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:47,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:47,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:47,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:47,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:47,429 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:47,706 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:48,005 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:49,208 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:49,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:49,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:49,847 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:38:49,994 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-04 09:38:49,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:49,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:50,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:50,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:38:50,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:38:50,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:38:50,157 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:50,157 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-04 09:38:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:50,342 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-04 09:38:50,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:38:50,342 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-04 09:38:50,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:50,343 INFO L225 Difference]: With dead ends: 84 [2018-10-04 09:38:50,343 INFO L226 Difference]: Without dead ends: 82 [2018-10-04 09:38:50,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 18 [2018-10-04 09:38:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-04 09:38:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-04 09:38:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-04 09:38:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-04 09:38:50,346 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-04 09:38:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:50,346 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-04 09:38:50,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:38:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-04 09:38:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-04 09:38:50,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:50,347 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-04 09:38:50,347 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:50,347 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash -20602015, now seen corresponding path program 78 times [2018-10-04 09:38:50,347 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:50,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:50,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:50,348 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:50,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:50,592 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:50,994 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:51,573 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:52,155 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:52,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:52,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:52,315 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:38:52,461 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-04 09:38:52,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:52,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:52,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:52,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:38:52,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:38:52,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:38:52,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:52,697 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-04 09:38:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:52,812 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 09:38:52,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:38:52,813 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-04 09:38:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:52,814 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:38:52,814 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:38:52,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 19 [2018-10-04 09:38:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:38:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:38:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:38:52,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 09:38:52,816 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-04 09:38:52,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:52,817 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 09:38:52,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:38:52,817 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 09:38:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:38:52,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:52,818 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-04 09:38:52,818 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:52,818 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:52,818 INFO L82 PathProgramCache]: Analyzing trace with hash -638664440, now seen corresponding path program 79 times [2018-10-04 09:38:52,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:52,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:52,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:52,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:52,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:53,150 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:53,403 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:54,071 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:54,765 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:55,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:55,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:55,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:55,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:55,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:55,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:38:55,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:38:55,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:38:55,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:55,644 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-04 09:38:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:55,814 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-04 09:38:55,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:38:55,814 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-04 09:38:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:55,815 INFO L225 Difference]: With dead ends: 86 [2018-10-04 09:38:55,815 INFO L226 Difference]: Without dead ends: 84 [2018-10-04 09:38:55,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 20 [2018-10-04 09:38:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-04 09:38:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-04 09:38:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-04 09:38:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-04 09:38:55,817 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-04 09:38:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:55,817 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-04 09:38:55,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:38:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-04 09:38:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-04 09:38:55,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:55,818 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-04 09:38:55,818 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:55,818 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1676236865, now seen corresponding path program 80 times [2018-10-04 09:38:55,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:55,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:55,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:55,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:38:55,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:56,066 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:56,311 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:56,621 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:57,601 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:38:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:58,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:38:58,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:38:58,478 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:38:58,598 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:38:58,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:38:58,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:38:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:38:58,796 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:38:58,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:38:58,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:38:58,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:38:58,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:38:58,797 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-04 09:38:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:38:59,081 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 09:38:59,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:38:59,081 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-04 09:38:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:38:59,082 INFO L225 Difference]: With dead ends: 87 [2018-10-04 09:38:59,082 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 09:38:59,082 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 21 [2018-10-04 09:38:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 09:38:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 09:38:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 09:38:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 09:38:59,085 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-04 09:38:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:38:59,086 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 09:38:59,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:38:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 09:38:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 09:38:59,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:38:59,086 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-04 09:38:59,086 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:38:59,086 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:38:59,086 INFO L82 PathProgramCache]: Analyzing trace with hash 423733288, now seen corresponding path program 81 times [2018-10-04 09:38:59,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:38:59,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:38:59,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:59,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:38:59,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:38:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:38:59,391 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:38:59,652 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:38:59,878 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:00,507 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:01,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:01,073 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:01,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:01,235 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-04 09:39:01,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:01,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:01,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:01,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:39:01,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:39:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:39:01,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:01,507 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-04 09:39:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:01,659 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-04 09:39:01,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:39:01,659 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-04 09:39:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:01,660 INFO L225 Difference]: With dead ends: 88 [2018-10-04 09:39:01,660 INFO L226 Difference]: Without dead ends: 86 [2018-10-04 09:39:01,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 22 [2018-10-04 09:39:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-04 09:39:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-04 09:39:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-04 09:39:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-04 09:39:01,662 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-04 09:39:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:01,662 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-04 09:39:01,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:39:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-04 09:39:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-04 09:39:01,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:01,663 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-04 09:39:01,663 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:01,663 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash 250828065, now seen corresponding path program 82 times [2018-10-04 09:39:01,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:01,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:01,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:01,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:01,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:01,888 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:02,050 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:02,453 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:03,419 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:04,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:04,662 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:04,670 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:04,787 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:04,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:04,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:05,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:05,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:39:05,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:39:05,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:39:05,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:05,018 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-04 09:39:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:05,404 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 09:39:05,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:39:05,404 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-04 09:39:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:05,405 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:39:05,405 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:39:05,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.7s impTime 23 [2018-10-04 09:39:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:39:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:39:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:39:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 09:39:05,407 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-04 09:39:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:05,407 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 09:39:05,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:39:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 09:39:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:39:05,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:05,409 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-04 09:39:05,409 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:05,410 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash -814266552, now seen corresponding path program 83 times [2018-10-04 09:39:05,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:05,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:05,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:05,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:05,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:05,942 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:06,333 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:06,899 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:07,855 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:08,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:08,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:08,877 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:09,044 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 09:39:09,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:09,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:09,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:09,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:39:09,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:39:09,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:39:09,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:09,407 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-04 09:39:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:09,603 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-04 09:39:09,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:39:09,603 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-04 09:39:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:09,604 INFO L225 Difference]: With dead ends: 90 [2018-10-04 09:39:09,604 INFO L226 Difference]: Without dead ends: 88 [2018-10-04 09:39:09,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 24 [2018-10-04 09:39:09,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-04 09:39:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-04 09:39:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-04 09:39:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-04 09:39:09,607 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-04 09:39:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:09,607 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-04 09:39:09,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:39:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-04 09:39:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-04 09:39:09,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:09,608 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-04 09:39:09,608 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:09,609 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:09,609 INFO L82 PathProgramCache]: Analyzing trace with hash 527538689, now seen corresponding path program 84 times [2018-10-04 09:39:09,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:09,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:09,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:09,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:09,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:09,954 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:10,344 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:10,515 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:10,933 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:11,584 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:11,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:11,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-04 09:39:11,606 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:11,773 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:39:11,773 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:11,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:11,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:11,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:39:11,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:39:11,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:39:11,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:11,945 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-04 09:39:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:12,094 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 09:39:12,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:39:12,095 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-04 09:39:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:12,096 INFO L225 Difference]: With dead ends: 91 [2018-10-04 09:39:12,096 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 09:39:12,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 8 [2018-10-04 09:39:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 09:39:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 09:39:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 09:39:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 09:39:12,098 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-04 09:39:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:12,099 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 09:39:12,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:39:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 09:39:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 09:39:12,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:12,099 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-04 09:39:12,100 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:12,100 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash -826171800, now seen corresponding path program 85 times [2018-10-04 09:39:12,100 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:12,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:12,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:12,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:12,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:12,584 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:13,026 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:13,636 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:14,519 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:14,840 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:14,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:14,875 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:14,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:15,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:15,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:15,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:39:15,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:39:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:39:15,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:15,188 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-04 09:39:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:15,348 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-04 09:39:15,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:39:15,349 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-04 09:39:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:15,349 INFO L225 Difference]: With dead ends: 92 [2018-10-04 09:39:15,349 INFO L226 Difference]: Without dead ends: 90 [2018-10-04 09:39:15,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 9 [2018-10-04 09:39:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-04 09:39:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-04 09:39:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-04 09:39:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-04 09:39:15,352 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-04 09:39:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:15,353 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-04 09:39:15,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:39:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-04 09:39:15,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-04 09:39:15,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:15,354 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-04 09:39:15,354 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:15,354 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:15,354 INFO L82 PathProgramCache]: Analyzing trace with hash 158476001, now seen corresponding path program 86 times [2018-10-04 09:39:15,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:15,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:15,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:15,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:15,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:15,545 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:15,811 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:16,303 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:17,456 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:18,107 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:18,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:18,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:18,145 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:39:18,276 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:39:18,276 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:18,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:18,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:18,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:39:18,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:39:18,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:39:18,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:18,457 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-04 09:39:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:18,613 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 09:39:18,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:39:18,614 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-04 09:39:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:18,614 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:39:18,614 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:39:18,615 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 10 [2018-10-04 09:39:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:39:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:39:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:39:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 09:39:18,616 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-04 09:39:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:18,617 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 09:39:18,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:39:18,617 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 09:39:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:39:18,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:18,617 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-04 09:39:18,617 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:18,617 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash 617786760, now seen corresponding path program 87 times [2018-10-04 09:39:18,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:18,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:18,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:18,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:18,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:18,840 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:19,037 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:19,734 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:20,678 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:21,562 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:21,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:21,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:21,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:21,774 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-04 09:39:21,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:21,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:21,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:21,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:39:21,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:39:21,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:39:21,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:21,953 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-04 09:39:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:22,131 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-04 09:39:22,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:39:22,131 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-04 09:39:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:22,132 INFO L225 Difference]: With dead ends: 94 [2018-10-04 09:39:22,132 INFO L226 Difference]: Without dead ends: 92 [2018-10-04 09:39:22,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.6s impTime 11 [2018-10-04 09:39:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-04 09:39:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-04 09:39:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-04 09:39:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-04 09:39:22,134 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-04 09:39:22,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:22,134 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-04 09:39:22,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:39:22,135 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-04 09:39:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-04 09:39:22,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:22,135 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-04 09:39:22,135 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:22,136 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:22,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1971518401, now seen corresponding path program 88 times [2018-10-04 09:39:22,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:22,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:22,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:22,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:22,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:22,340 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:22,590 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:23,052 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:23,990 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:24,884 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:24,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:24,941 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:24,949 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:25,077 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:25,077 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:25,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:25,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:25,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:39:25,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:39:25,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:39:25,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:25,258 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-04 09:39:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:25,436 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 09:39:25,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:39:25,437 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-04 09:39:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:25,437 INFO L225 Difference]: With dead ends: 95 [2018-10-04 09:39:25,437 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 09:39:25,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 12 [2018-10-04 09:39:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 09:39:25,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 09:39:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 09:39:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 09:39:25,440 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-04 09:39:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:25,440 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 09:39:25,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:39:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 09:39:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 09:39:25,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:25,441 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-04 09:39:25,441 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:25,441 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 987526312, now seen corresponding path program 89 times [2018-10-04 09:39:25,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:25,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:25,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:25,692 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:26,093 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:26,694 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:27,279 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:27,580 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:27,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:27,710 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:39:27,717 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:27,894 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-04 09:39:27,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:27,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:28,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:28,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 09:39:28,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 09:39:28,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 09:39:28,075 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:28,075 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-04 09:39:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:28,226 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-04 09:39:28,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 09:39:28,226 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-04 09:39:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:28,227 INFO L225 Difference]: With dead ends: 96 [2018-10-04 09:39:28,227 INFO L226 Difference]: Without dead ends: 94 [2018-10-04 09:39:28,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 13 [2018-10-04 09:39:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-04 09:39:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-04 09:39:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-04 09:39:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-04 09:39:28,229 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-04 09:39:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:28,229 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-04 09:39:28,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 09:39:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-04 09:39:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-04 09:39:28,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:28,230 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-04 09:39:28,230 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:28,230 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:28,230 INFO L82 PathProgramCache]: Analyzing trace with hash 548542625, now seen corresponding path program 90 times [2018-10-04 09:39:28,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:28,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:28,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:28,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:28,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:28,438 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:28,826 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:28,997 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:29,437 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:30,413 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:30,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:30,704 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:39:30,712 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:39:30,889 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-04 09:39:30,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:30,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:31,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:31,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 09:39:31,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 09:39:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 09:39:31,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:31,092 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-04 09:39:31,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:31,263 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 09:39:31,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 09:39:31,263 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-04 09:39:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:31,264 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:39:31,264 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:39:31,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 14 [2018-10-04 09:39:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:39:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:39:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:39:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 09:39:31,267 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-04 09:39:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:31,267 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 09:39:31,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 09:39:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 09:39:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:39:31,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:31,268 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-04 09:39:31,268 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:31,268 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:31,268 INFO L82 PathProgramCache]: Analyzing trace with hash -175049784, now seen corresponding path program 91 times [2018-10-04 09:39:31,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:31,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:31,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:31,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:31,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:31,513 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:31,902 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:32,466 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:33,393 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:34,527 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:35,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:35,357 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:39:35,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:35,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:35,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:35,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 09:39:35,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 09:39:35,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 09:39:35,707 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:35,707 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-04 09:39:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:35,957 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-04 09:39:35,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 09:39:35,958 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-04 09:39:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:35,958 INFO L225 Difference]: With dead ends: 98 [2018-10-04 09:39:35,959 INFO L226 Difference]: Without dead ends: 96 [2018-10-04 09:39:35,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.7s impTime 15 [2018-10-04 09:39:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-04 09:39:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-04 09:39:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-04 09:39:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-04 09:39:35,961 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-04 09:39:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:35,961 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-04 09:39:35,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 09:39:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-04 09:39:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-04 09:39:35,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:35,961 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-04 09:39:35,962 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:35,962 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:35,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1131577983, now seen corresponding path program 92 times [2018-10-04 09:39:35,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:35,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:35,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:35,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:35,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:36,204 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:36,377 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:36,786 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:37,760 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:38,872 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:38,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:38,936 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 [2018-10-04 09:39:38,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:39:39,072 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:39:39,072 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:39,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:39,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:39,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 09:39:39,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 09:39:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 09:39:39,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:39,257 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-04 09:39:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:39,459 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 09:39:39,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 09:39:39,459 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-04 09:39:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:39,460 INFO L225 Difference]: With dead ends: 99 [2018-10-04 09:39:39,460 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 09:39:39,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 16 [2018-10-04 09:39:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 09:39:39,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 09:39:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 09:39:39,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 09:39:39,463 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-04 09:39:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:39,463 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 09:39:39,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 09:39:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 09:39:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 09:39:39,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:39,464 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-04 09:39:39,464 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:39,464 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash -719181080, now seen corresponding path program 93 times [2018-10-04 09:39:39,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:39,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:39,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:39,465 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:39,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:39,804 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:40,252 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:40,478 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:40,994 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:41,739 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:42,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:42,220 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 [2018-10-04 09:39:42,227 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:39:42,417 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-04 09:39:42,417 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:42,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:42,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:42,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 09:39:42,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 09:39:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 09:39:42,607 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:42,607 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-04 09:39:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:42,821 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-04 09:39:42,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 09:39:42,822 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-04 09:39:42,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:42,823 INFO L225 Difference]: With dead ends: 100 [2018-10-04 09:39:42,823 INFO L226 Difference]: Without dead ends: 98 [2018-10-04 09:39:42,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 17 [2018-10-04 09:39:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-04 09:39:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-04 09:39:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-04 09:39:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-04 09:39:42,825 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-04 09:39:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:42,825 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-04 09:39:42,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 09:39:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-04 09:39:42,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-04 09:39:42,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:42,826 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-04 09:39:42,826 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:42,826 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:42,826 INFO L82 PathProgramCache]: Analyzing trace with hash -819778975, now seen corresponding path program 94 times [2018-10-04 09:39:42,826 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:42,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:42,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:42,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:42,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:43,080 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:43,342 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:43,650 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:44,583 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:45,997 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:46,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:46,580 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 [2018-10-04 09:39:46,587 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:39:46,720 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:39:46,721 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:46,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:46,959 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:46,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 09:39:46,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 09:39:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 09:39:46,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:46,960 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-04 09:39:47,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:47,173 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 09:39:47,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 09:39:47,173 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-04 09:39:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:47,174 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:39:47,174 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:39:47,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.3s impTime 18 [2018-10-04 09:39:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:39:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:39:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:39:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 09:39:47,177 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-04 09:39:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:47,177 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 09:39:47,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 09:39:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 09:39:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:39:47,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:47,178 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-04 09:39:47,178 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:47,178 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash 356653576, now seen corresponding path program 95 times [2018-10-04 09:39:47,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:47,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:47,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:47,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:47,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:47,423 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:47,619 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:47,995 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:48,691 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:49,600 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:50,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:50,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:39:50,576 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:39:50,767 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 09:39:50,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:50,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:50,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:50,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 09:39:50,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 09:39:50,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 09:39:50,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:50,960 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-04 09:39:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:51,221 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-04 09:39:51,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 09:39:51,221 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-04 09:39:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:51,222 INFO L225 Difference]: With dead ends: 102 [2018-10-04 09:39:51,222 INFO L226 Difference]: Without dead ends: 100 [2018-10-04 09:39:51,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 3.0s impTime 19 [2018-10-04 09:39:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-04 09:39:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-04 09:39:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-04 09:39:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-04 09:39:51,224 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-04 09:39:51,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:51,225 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-04 09:39:51,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 09:39:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-04 09:39:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-04 09:39:51,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:51,225 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-04 09:39:51,225 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:51,225 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:51,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1828643007, now seen corresponding path program 96 times [2018-10-04 09:39:51,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:51,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:51,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:51,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:51,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:51,674 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:52,074 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:52,649 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:53,206 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:53,545 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:53,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:53,910 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 [2018-10-04 09:39:53,919 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:39:54,113 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:39:54,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:39:54,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:54,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:54,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 09:39:54,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 09:39:54,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 09:39:54,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:54,312 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-04 09:39:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:54,492 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 09:39:54,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 09:39:54,493 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-04 09:39:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:54,493 INFO L225 Difference]: With dead ends: 103 [2018-10-04 09:39:54,493 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 09:39:54,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 20 [2018-10-04 09:39:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 09:39:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 09:39:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 09:39:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 09:39:54,498 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-04 09:39:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:54,498 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 09:39:54,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 09:39:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 09:39:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 09:39:54,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:54,499 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-04 09:39:54,499 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:54,499 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash -853360344, now seen corresponding path program 97 times [2018-10-04 09:39:54,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:54,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:54,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:54,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:39:54,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:54,798 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:55,162 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:55,683 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:39:56,677 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:57,889 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:39:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:58,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:39:58,558 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 [2018-10-04 09:39:58,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:58,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:39:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:39:58,908 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:39:58,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 09:39:58,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 09:39:58,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 09:39:58,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:39:58,910 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-04 09:39:59,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:39:59,142 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-04 09:39:59,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 09:39:59,142 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-04 09:39:59,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:39:59,143 INFO L225 Difference]: With dead ends: 104 [2018-10-04 09:39:59,143 INFO L226 Difference]: Without dead ends: 102 [2018-10-04 09:39:59,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.5s impTime 21 [2018-10-04 09:39:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-04 09:39:59,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-04 09:39:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-04 09:39:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-04 09:39:59,146 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-04 09:39:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:39:59,146 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-04 09:39:59,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 09:39:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-04 09:39:59,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-04 09:39:59,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:39:59,146 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-04 09:39:59,147 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:39:59,147 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:39:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash -684368863, now seen corresponding path program 98 times [2018-10-04 09:39:59,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:39:59,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:39:59,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:59,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:39:59,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:39:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:39:59,610 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:39:59,986 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:00,841 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:01,836 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:03,049 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:04,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:04,223 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 [2018-10-04 09:40:04,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:40:04,377 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:40:04,377 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:04,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:04,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:04,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 09:40:04,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 09:40:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 09:40:04,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:04,577 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-04 09:40:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:04,900 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 09:40:04,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 09:40:04,900 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-04 09:40:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:04,901 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:40:04,901 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:40:04,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.5s impTime 22 [2018-10-04 09:40:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:40:04,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:40:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:40:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 09:40:04,903 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-04 09:40:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:04,904 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 09:40:04,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 09:40:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 09:40:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:40:04,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:04,905 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-04 09:40:04,905 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:04,905 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:04,905 INFO L82 PathProgramCache]: Analyzing trace with hash 259399752, now seen corresponding path program 99 times [2018-10-04 09:40:04,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:04,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:04,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:04,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:04,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:05,172 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:05,855 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:06,420 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:07,359 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:08,488 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:09,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:09,653 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 [2018-10-04 09:40:09,659 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:40:09,869 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-04 09:40:09,869 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:09,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:10,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:10,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 09:40:10,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 09:40:10,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 09:40:10,068 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:10,069 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-04 09:40:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:10,388 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-04 09:40:10,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 09:40:10,389 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-04 09:40:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:10,390 INFO L225 Difference]: With dead ends: 106 [2018-10-04 09:40:10,390 INFO L226 Difference]: Without dead ends: 104 [2018-10-04 09:40:10,390 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 23 [2018-10-04 09:40:10,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-04 09:40:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-04 09:40:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-04 09:40:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-04 09:40:10,392 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-04 09:40:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:10,393 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-04 09:40:10,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 09:40:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-04 09:40:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-04 09:40:10,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:10,393 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-04 09:40:10,394 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:10,394 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:10,394 INFO L82 PathProgramCache]: Analyzing trace with hash -548544255, now seen corresponding path program 100 times [2018-10-04 09:40:10,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:10,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:10,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:10,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:10,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:10,809 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:11,166 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:11,707 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:12,590 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:13,682 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:14,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:14,926 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:40:14,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:40:15,076 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:40:15,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:15,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:15,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:15,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 09:40:15,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 09:40:15,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 09:40:15,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:15,274 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-04 09:40:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:15,650 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 09:40:15,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 09:40:15,650 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-04 09:40:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:15,651 INFO L225 Difference]: With dead ends: 107 [2018-10-04 09:40:15,651 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 09:40:15,652 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 24 [2018-10-04 09:40:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 09:40:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 09:40:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 09:40:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 09:40:15,655 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-04 09:40:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:15,655 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 09:40:15,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 09:40:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 09:40:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 09:40:15,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:15,656 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-04 09:40:15,656 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:15,656 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:15,656 INFO L82 PathProgramCache]: Analyzing trace with hash 174995304, now seen corresponding path program 101 times [2018-10-04 09:40:15,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:15,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:15,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:15,657 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:15,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:16,057 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:16,457 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:17,037 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:18,008 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:19,149 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:20,538 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:20,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:20,552 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 [2018-10-04 09:40:20,560 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:40:20,798 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-04 09:40:20,798 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:20,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:21,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:21,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 09:40:21,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 09:40:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 09:40:21,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:21,147 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-04 09:40:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:21,446 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-04 09:40:21,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 09:40:21,447 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-04 09:40:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:21,448 INFO L225 Difference]: With dead ends: 108 [2018-10-04 09:40:21,448 INFO L226 Difference]: Without dead ends: 106 [2018-10-04 09:40:21,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time 4.4s impTime 8 [2018-10-04 09:40:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-04 09:40:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-04 09:40:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-04 09:40:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-04 09:40:21,452 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-04 09:40:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:21,452 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-04 09:40:21,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 09:40:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-04 09:40:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-04 09:40:21,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:21,453 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-04 09:40:21,453 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:21,453 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1129885153, now seen corresponding path program 102 times [2018-10-04 09:40:21,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:21,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:21,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:21,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:21,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:21,678 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:22,051 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:22,524 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:23,486 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:24,720 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:26,436 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:26,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:26,540 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 [2018-10-04 09:40:26,549 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:40:26,758 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-04 09:40:26,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:26,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:26,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:26,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 09:40:26,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 09:40:26,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 09:40:26,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:26,976 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-04 09:40:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:27,318 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 09:40:27,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 09:40:27,319 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-04 09:40:27,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:27,319 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:40:27,320 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:40:27,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.5s impTime 9 [2018-10-04 09:40:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:40:27,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:40:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:40:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 09:40:27,322 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-04 09:40:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:27,323 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 09:40:27,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 09:40:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 09:40:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:40:27,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:27,324 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-04 09:40:27,324 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:27,324 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash 666699400, now seen corresponding path program 103 times [2018-10-04 09:40:27,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:27,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:27,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:27,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:27,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:27,609 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:27,814 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:28,258 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:29,238 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:30,118 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:30,393 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:30,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:30,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:40:30,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:30,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:30,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:30,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 09:40:30,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 09:40:30,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 09:40:30,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:30,899 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-04 09:40:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:31,154 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-04 09:40:31,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 09:40:31,155 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-04 09:40:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:31,155 INFO L225 Difference]: With dead ends: 110 [2018-10-04 09:40:31,155 INFO L226 Difference]: Without dead ends: 108 [2018-10-04 09:40:31,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 10 [2018-10-04 09:40:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-04 09:40:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-04 09:40:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-04 09:40:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-04 09:40:31,157 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-04 09:40:31,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:31,157 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-04 09:40:31,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 09:40:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-04 09:40:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-04 09:40:31,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:31,158 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-04 09:40:31,158 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:31,158 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -807157055, now seen corresponding path program 104 times [2018-10-04 09:40:31,158 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:31,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:31,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:31,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:40:31,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:31,418 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:31,781 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:32,143 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:32,443 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:32,979 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:33,800 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:33,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:33,966 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 [2018-10-04 09:40:33,973 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:40:34,122 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:40:34,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:34,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:34,405 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:34,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 09:40:34,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 09:40:34,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 09:40:34,406 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:34,406 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-04 09:40:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:34,623 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 09:40:34,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 09:40:34,624 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-04 09:40:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:34,624 INFO L225 Difference]: With dead ends: 111 [2018-10-04 09:40:34,624 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 09:40:34,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 11 [2018-10-04 09:40:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 09:40:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 09:40:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 09:40:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 09:40:34,626 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-04 09:40:34,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:34,627 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 09:40:34,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 09:40:34,627 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 09:40:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 09:40:34,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:34,627 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-04 09:40:34,627 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:34,628 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:34,628 INFO L82 PathProgramCache]: Analyzing trace with hash 747933096, now seen corresponding path program 105 times [2018-10-04 09:40:34,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:34,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:34,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:34,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:34,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:34,892 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:35,299 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:35,874 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:37,093 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:38,232 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:39,635 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:39,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:39,995 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 [2018-10-04 09:40:40,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:40:40,226 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-04 09:40:40,226 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:40,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:40,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:40,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 09:40:40,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 09:40:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 09:40:40,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:40,433 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-04 09:40:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:40,780 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-04 09:40:40,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 09:40:40,780 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-04 09:40:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:40,781 INFO L225 Difference]: With dead ends: 112 [2018-10-04 09:40:40,781 INFO L226 Difference]: Without dead ends: 110 [2018-10-04 09:40:40,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time 4.9s impTime 12 [2018-10-04 09:40:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-04 09:40:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-04 09:40:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-04 09:40:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-04 09:40:40,783 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-04 09:40:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:40,783 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-04 09:40:40,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 09:40:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-04 09:40:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-04 09:40:40,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:40,784 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-04 09:40:40,785 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:40,785 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:40,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1711087521, now seen corresponding path program 106 times [2018-10-04 09:40:40,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:40,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:40,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:40,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:40,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:41,012 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:41,651 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:42,215 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:43,147 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:43,352 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:44,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:44,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:40:44,653 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 [2018-10-04 09:40:44,660 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:40:44,810 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:40:44,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:40:44,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:40:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:40:45,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:40:45,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 09:40:45,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 09:40:45,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 09:40:45,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:40:45,039 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-04 09:40:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:40:45,320 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 09:40:45,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 09:40:45,320 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-04 09:40:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:40:45,321 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:40:45,321 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:40:45,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.3s impTime 13 [2018-10-04 09:40:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:40:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:40:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:40:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 09:40:45,323 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-04 09:40:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:40:45,324 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 09:40:45,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 09:40:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 09:40:45,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:40:45,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:40:45,324 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-04 09:40:45,324 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:40:45,324 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:40:45,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1504103624, now seen corresponding path program 107 times [2018-10-04 09:40:45,325 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:40:45,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:40:45,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:45,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:40:45,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:40:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:40:45,592 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:40:45,980 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:46,811 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:40:47,760 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:40:48,958 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 Received shutdown request... [2018-10-04 09:40:49,129 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:40:49,133 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:40:49,133 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:40:49 BoogieIcfgContainer [2018-10-04 09:40:49,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:40:49,134 INFO L168 Benchmark]: Toolchain (without parser) took 235251.50 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -103.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 316.8 MB). Peak memory consumption was 213.5 MB. Max. memory is 7.1 GB. [2018-10-04 09:40:49,135 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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. [2018-10-04 09:40:49,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:40:49,136 INFO L168 Benchmark]: Boogie Preprocessor took 20.39 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:40:49,137 INFO L168 Benchmark]: RCFGBuilder took 283.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:40:49,137 INFO L168 Benchmark]: TraceAbstraction took 234903.04 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -103.3 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 295.7 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. [2018-10-04 09:40:49,140 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 0.25 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 Procedure Inliner took 40.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.39 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 283.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234903.04 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -103.3 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 295.7 MB). Peak memory consumption was 192.4 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 111 with TraceHistMax 107, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 109 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 234.8s OverallTime, 108 OverallIterations, 107 TraceHistogramMax, 16.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 321 SDtfs, 0 SDslu, 4182 SDs, 0 SdLazy, 10067 SolverSat, 153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11768 GetRequests, 5990 SyntacticMatches, 0 SemanticMatches, 5778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 107 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 10.3s SatisfiabilityAnalysisTime, 198.0s InterpolantComputationTime, 11981 NumberOfCodeBlocks, 11981 NumberOfCodeBlocksAsserted, 1662 NumberOfCheckSat, 11768 ConstructedInterpolants, 0 QuantifiedInterpolants, 2530970 SizeOfPredicates, 107 NumberOfNonLiveVariables, 63971 ConjunctsInSsa, 5884 ConjunctsInUnsatCore, 213 InterpolantComputations, 1 PerfectInterpolantSequences, 0/408312 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-0-2018-10-04_09-40-49-149.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-0-2018-10-04_09-40-49-149.csv Completed graceful shutdown