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/down.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:26:53,929 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:26:53,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:26:53,951 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 00:26:54,009 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 [2018-10-01 00:26:54,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:26:54,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:26:54,038 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:26:54,039 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:26:54,039 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:26:54,039 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:26:54,039 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:26:54,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:26:54,040 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:26:54,040 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:26:54,040 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:26:54,040 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:26:54,041 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:26:54,041 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:26:54,041 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:26:54,041 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:26:54,041 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:26:54,042 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:26:54,042 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:26:54,042 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:26:54,042 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:26:54,042 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:26:54,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:26:54,043 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:26:54,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:26:54,043 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:26:54,044 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:26:54,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:26:54,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:26:54,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:26:54,044 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:26:54,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:26:54,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:26:54,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:26:54,109 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:26:54,109 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:26:54,110 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-01 00:26:54,110 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/down.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-01 00:26:54,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:26:54,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:26:54,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:26:54,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:26:54,166 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:26:54,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:26:54,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:26:54,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:26:54,207 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:26:54,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/1) ... [2018-10-01 00:26:54,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:26:54,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:26:54,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:26:54,231 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:26:54,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (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 [2018-10-01 00:26:54,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-01 00:26:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:26:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:26:54,563 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:26:54,564 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:26:54 BoogieIcfgContainer [2018-10-01 00:26:54,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:26:54,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:26:54,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:26:54,568 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:26:54,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:26:54" (1/2) ... [2018-10-01 00:26:54,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ad5c15 and model type down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:26:54, skipping insertion in model container [2018-10-01 00:26:54,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:26:54" (2/2) ... [2018-10-01 00:26:54,572 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-01 00:26:54,582 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:26:54,590 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:26:54,643 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:26:54,644 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:26:54,644 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:26:54,644 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:26:54,645 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:26:54,645 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:26:54,645 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:26:54,645 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:26:54,645 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:26:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-01 00:26:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 00:26:54,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:54,669 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:26:54,670 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:54,680 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1951930377, now seen corresponding path program 1 times [2018-10-01 00:26:54,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:54,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:54,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:54,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:54,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:54,870 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:26:54,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:26:54,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:26:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:26:54,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:54,906 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-01 00:26:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:55,134 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-10-01 00:26:55,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:26:55,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-01 00:26:55,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:55,148 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:26:55,148 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:26:55,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:26:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:26:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2018-10-01 00:26:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:26:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-10-01 00:26:55,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 7 [2018-10-01 00:26:55,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:55,184 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-10-01 00:26:55,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:26:55,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2018-10-01 00:26:55,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-01 00:26:55,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:55,186 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:26:55,186 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:55,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:55,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1951989959, now seen corresponding path program 1 times [2018-10-01 00:26:55,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:55,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:55,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:55,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:55,247 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:26:55,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-01 00:26:55,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:26:55,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:26:55,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:55,249 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand 4 states. [2018-10-01 00:26:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:55,365 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2018-10-01 00:26:55,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:26:55,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-01 00:26:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:55,367 INFO L225 Difference]: With dead ends: 20 [2018-10-01 00:26:55,368 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:26:55,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:26:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:26:55,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:26:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:26:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-10-01 00:26:55,374 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2018-10-01 00:26:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:55,374 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-10-01 00:26:55,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:26:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2018-10-01 00:26:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:26:55,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:55,375 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:26:55,376 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:55,376 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:55,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1455783312, now seen corresponding path program 1 times [2018-10-01 00:26:55,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:55,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:55,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:55,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-01 00:26:55,463 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:26:55,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-01 00:26:55,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:26:55,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:26:55,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:55,465 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2018-10-01 00:26:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:55,845 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2018-10-01 00:26:55,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:26:55,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-01 00:26:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:55,846 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:26:55,846 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:26:55,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:26:55,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:26:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-10-01 00:26:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:26:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-01 00:26:55,851 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2018-10-01 00:26:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:55,852 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-01 00:26:55,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:26:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-10-01 00:26:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:26:55,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:55,853 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:26:55,853 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:55,853 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:55,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1455723730, now seen corresponding path program 1 times [2018-10-01 00:26:55,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:55,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:55,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:55,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:55,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:26:55,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-01 00:26:55,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:26:55,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:26:55,897 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:55,897 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2018-10-01 00:26:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:56,019 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-10-01 00:26:56,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:26:56,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-01 00:26:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:56,021 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:26:56,021 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:26:56,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:26:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:26:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-10-01 00:26:56,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:26:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-10-01 00:26:56,027 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2018-10-01 00:26:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:56,027 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-10-01 00:26:56,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:26:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-10-01 00:26:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:26:56,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:56,028 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:26:56,029 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:56,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:56,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1394403420, now seen corresponding path program 1 times [2018-10-01 00:26:56,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:56,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:56,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:56,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:56,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:56,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:56,197 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 [2018-10-01 00:26:56,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:56,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:56,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:56,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:26:56,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:26:56,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:26:56,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:56,317 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2018-10-01 00:26:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:56,506 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-10-01 00:26:56,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:26:56,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-10-01 00:26:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:56,509 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:26:56,509 INFO L226 Difference]: Without dead ends: 16 [2018-10-01 00:26:56,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-01 00:26:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-01 00:26:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-01 00:26:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-01 00:26:56,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-10-01 00:26:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:56,515 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-01 00:26:56,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:26:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-01 00:26:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-01 00:26:56,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:56,516 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 00:26:56,516 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:56,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:56,517 INFO L82 PathProgramCache]: Analyzing trace with hash -961145443, now seen corresponding path program 2 times [2018-10-01 00:26:56,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:56,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:56,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:56,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:56,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:56,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:56,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:56,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:26:56,795 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:26:56,795 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:56,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:57,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 00:26:57,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:26:57,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:26:57,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:57,090 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-10-01 00:26:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:57,238 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-10-01 00:26:57,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:26:57,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-10-01 00:26:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:57,242 INFO L225 Difference]: With dead ends: 30 [2018-10-01 00:26:57,242 INFO L226 Difference]: Without dead ends: 24 [2018-10-01 00:26:57,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:26:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-01 00:26:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-01 00:26:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-01 00:26:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-10-01 00:26:57,253 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 13 [2018-10-01 00:26:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:57,254 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-10-01 00:26:57,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:26:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-10-01 00:26:57,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-01 00:26:57,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:57,255 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2018-10-01 00:26:57,255 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:57,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:57,256 INFO L82 PathProgramCache]: Analyzing trace with hash -552275309, now seen corresponding path program 3 times [2018-10-01 00:26:57,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:57,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:57,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:57,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,392 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:57,392 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 [2018-10-01 00:26:57,403 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:26:57,423 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-01 00:26:57,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:57,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:57,512 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:57,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:26:57,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:26:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:26:57,513 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:57,513 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 8 states. [2018-10-01 00:26:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:57,841 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2018-10-01 00:26:57,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:26:57,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-01 00:26:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:57,843 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:26:57,843 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:26:57,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:26:57,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:26:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:26:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-01 00:26:57,849 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2018-10-01 00:26:57,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:57,850 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-01 00:26:57,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:26:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-01 00:26:57,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:26:57,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:57,851 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2018-10-01 00:26:57,851 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:57,851 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:57,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2071906362, now seen corresponding path program 4 times [2018-10-01 00:26:57,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:57,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:57,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:57,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:58,093 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 [2018-10-01 00:26:58,101 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:26:58,116 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:26:58,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:58,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,209 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:58,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:26:58,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:26:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:26:58,210 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:58,210 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2018-10-01 00:26:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:58,369 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-10-01 00:26:58,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:26:58,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-01 00:26:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:58,371 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:26:58,371 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:26:58,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:26:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-10-01 00:26:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:26:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-01 00:26:58,378 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 18 [2018-10-01 00:26:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:58,378 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-01 00:26:58,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:26:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-01 00:26:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:26:58,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:58,380 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-01 00:26:58,380 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:58,380 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash -992407888, now seen corresponding path program 5 times [2018-10-01 00:26:58,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:58,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:58,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:58,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:58,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:58,489 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 [2018-10-01 00:26:58,504 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:26:58,527 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-01 00:26:58,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:58,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:58,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:58,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:26:58,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:26:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:26:58,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:58,631 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-01 00:26:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:58,920 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-01 00:26:58,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:26:58,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-10-01 00:26:58,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:58,921 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:26:58,921 INFO L226 Difference]: Without dead ends: 26 [2018-10-01 00:26:58,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-01 00:26:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-01 00:26:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-01 00:26:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-01 00:26:58,932 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2018-10-01 00:26:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:58,933 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-01 00:26:58,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:26:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-01 00:26:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-01 00:26:58,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:58,934 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-01 00:26:58,934 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:58,934 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:58,935 INFO L82 PathProgramCache]: Analyzing trace with hash 390441321, now seen corresponding path program 6 times [2018-10-01 00:26:58,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:58,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:58,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:58,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:58,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:59,048 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:59,059 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:26:59,077 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-01 00:26:59,077 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:26:59,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,171 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:59,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 00:26:59,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:26:59,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:26:59,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:59,172 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2018-10-01 00:26:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:59,271 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-10-01 00:26:59,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:26:59,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-10-01 00:26:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:59,273 INFO L225 Difference]: With dead ends: 40 [2018-10-01 00:26:59,273 INFO L226 Difference]: Without dead ends: 34 [2018-10-01 00:26:59,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:26:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-01 00:26:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2018-10-01 00:26:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-01 00:26:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-01 00:26:59,280 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-10-01 00:26:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:59,281 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-01 00:26:59,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:26:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-01 00:26:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-01 00:26:59,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:59,282 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2018-10-01 00:26:59,282 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:59,282 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:59,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1927135327, now seen corresponding path program 7 times [2018-10-01 00:26:59,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:59,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:59,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:26:59,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,408 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:26:59,408 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:26:59,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:26:59,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:26:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:26:59,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:26:59,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:26:59,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:26:59,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:26:59,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:26:59,536 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 12 states. [2018-10-01 00:26:59,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:26:59,884 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-10-01 00:26:59,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:26:59,885 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-10-01 00:26:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:26:59,885 INFO L225 Difference]: With dead ends: 58 [2018-10-01 00:26:59,886 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:26:59,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:26:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:26:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:26:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:26:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-01 00:26:59,893 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2018-10-01 00:26:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:26:59,894 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-01 00:26:59,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:26:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-01 00:26:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:26:59,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:26:59,895 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2018-10-01 00:26:59,895 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:26:59,895 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:26:59,896 INFO L82 PathProgramCache]: Analyzing trace with hash -906890938, now seen corresponding path program 8 times [2018-10-01 00:26:59,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:26:59,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:26:59,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:26:59,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:26:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:00,025 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:00,025 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:00,039 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:00,068 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:00,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:00,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:00,251 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:00,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:27:00,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:27:00,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:27:00,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:00,253 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 8 states. [2018-10-01 00:27:00,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:00,636 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-10-01 00:27:00,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:27:00,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-10-01 00:27:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:00,639 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:27:00,639 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:27:00,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:27:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:27:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2018-10-01 00:27:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:27:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-01 00:27:00,647 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2018-10-01 00:27:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:00,647 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-01 00:27:00,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:27:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-01 00:27:00,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:27:00,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:00,649 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1] [2018-10-01 00:27:00,649 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:00,649 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:00,650 INFO L82 PathProgramCache]: Analyzing trace with hash -466038340, now seen corresponding path program 9 times [2018-10-01 00:27:00,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:00,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:00,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:00,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:00,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:00,827 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:00,828 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 [2018-10-01 00:27:00,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:00,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-01 00:27:00,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:00,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:01,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:01,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:27:01,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:27:01,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:27:01,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:01,243 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 14 states. [2018-10-01 00:27:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:01,876 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-01 00:27:01,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:27:01,876 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2018-10-01 00:27:01,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:01,877 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:27:01,877 INFO L226 Difference]: Without dead ends: 36 [2018-10-01 00:27:01,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-01 00:27:01,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-01 00:27:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-01 00:27:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-10-01 00:27:01,884 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 32 [2018-10-01 00:27:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:01,885 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-10-01 00:27:01,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:27:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-10-01 00:27:01,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-01 00:27:01,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:01,886 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2018-10-01 00:27:01,886 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:01,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1282545973, now seen corresponding path program 10 times [2018-10-01 00:27:01,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:01,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:01,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:01,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:01,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:02,017 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 [2018-10-01 00:27:02,025 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:02,060 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:02,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:02,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:02,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 00:27:02,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:27:02,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:27:02,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:02,156 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2018-10-01 00:27:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:02,272 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-10-01 00:27:02,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:27:02,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-10-01 00:27:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:02,273 INFO L225 Difference]: With dead ends: 50 [2018-10-01 00:27:02,273 INFO L226 Difference]: Without dead ends: 44 [2018-10-01 00:27:02,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:27:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-01 00:27:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-10-01 00:27:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-01 00:27:02,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-10-01 00:27:02,281 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2018-10-01 00:27:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:02,281 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-10-01 00:27:02,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:27:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-10-01 00:27:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-01 00:27:02,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:02,283 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1] [2018-10-01 00:27:02,283 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:02,283 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:02,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1500867115, now seen corresponding path program 11 times [2018-10-01 00:27:02,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:02,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:02,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:02,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:02,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:02,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:02,464 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:02,488 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-01 00:27:02,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:02,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:02,858 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:02,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:27:02,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:27:02,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:27:02,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:02,859 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 16 states. [2018-10-01 00:27:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:03,917 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-10-01 00:27:03,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:27:03,917 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2018-10-01 00:27:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:03,918 INFO L225 Difference]: With dead ends: 76 [2018-10-01 00:27:03,918 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:27:03,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:03,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:27:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:27:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:27:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-01 00:27:03,926 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 37 [2018-10-01 00:27:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:03,926 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-01 00:27:03,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:27:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-01 00:27:03,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:27:03,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:03,927 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2018-10-01 00:27:03,927 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:03,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:03,928 INFO L82 PathProgramCache]: Analyzing trace with hash 594208338, now seen corresponding path program 12 times [2018-10-01 00:27:03,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:03,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:03,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:03,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:03,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:04,031 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,032 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:04,032 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 [2018-10-01 00:27:04,040 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:04,061 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:27:04,061 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:04,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,170 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:04,170 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:27:04,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:27:04,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:27:04,171 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:04,171 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 10 states. [2018-10-01 00:27:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:04,310 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-10-01 00:27:04,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:27:04,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2018-10-01 00:27:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:04,312 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:27:04,312 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:27:04,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:27:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:27:04,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-10-01 00:27:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:27:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-01 00:27:04,319 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 38 [2018-10-01 00:27:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:04,320 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-01 00:27:04,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:27:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-01 00:27:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:27:04,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:04,321 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1] [2018-10-01 00:27:04,322 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:04,322 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:04,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1054367944, now seen corresponding path program 13 times [2018-10-01 00:27:04,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:04,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:04,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:04,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:04,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:04,490 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 [2018-10-01 00:27:04,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:04,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 112 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:04,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:04,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:27:04,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:27:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:27:04,918 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:04,918 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 18 states. [2018-10-01 00:27:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:05,389 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-01 00:27:05,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:27:05,389 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2018-10-01 00:27:05,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:05,390 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:27:05,390 INFO L226 Difference]: Without dead ends: 46 [2018-10-01 00:27:05,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-01 00:27:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-01 00:27:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-01 00:27:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2018-10-01 00:27:05,397 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2018-10-01 00:27:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:05,397 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2018-10-01 00:27:05,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:27:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2018-10-01 00:27:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-01 00:27:05,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:05,398 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2018-10-01 00:27:05,399 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:05,399 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:05,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1098736897, now seen corresponding path program 14 times [2018-10-01 00:27:05,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:05,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:05,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:05,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:05,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:05,512 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 [2018-10-01 00:27:05,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:05,546 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:05,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:05,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:05,664 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:05,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 00:27:05,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:27:05,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:27:05,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:05,665 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 11 states. [2018-10-01 00:27:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:05,895 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2018-10-01 00:27:05,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:27:05,895 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2018-10-01 00:27:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:05,896 INFO L225 Difference]: With dead ends: 60 [2018-10-01 00:27:05,896 INFO L226 Difference]: Without dead ends: 54 [2018-10-01 00:27:05,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:27:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-01 00:27:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-10-01 00:27:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-01 00:27:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-10-01 00:27:05,903 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 43 [2018-10-01 00:27:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:05,904 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-10-01 00:27:05,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:27:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-10-01 00:27:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-01 00:27:05,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:05,905 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1] [2018-10-01 00:27:05,905 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:05,905 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:05,905 INFO L82 PathProgramCache]: Analyzing trace with hash -48369673, now seen corresponding path program 15 times [2018-10-01 00:27:05,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:05,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:05,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:05,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:06,256 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:06,256 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:06,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:06,291 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-01 00:27:06,291 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:06,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:06,430 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:06,430 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:27:06,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:27:06,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:27:06,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:06,431 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 20 states. [2018-10-01 00:27:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:07,166 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2018-10-01 00:27:07,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:27:07,167 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2018-10-01 00:27:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:07,168 INFO L225 Difference]: With dead ends: 94 [2018-10-01 00:27:07,168 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:27:07,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:27:07,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:27:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:27:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-01 00:27:07,175 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-10-01 00:27:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:07,175 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-01 00:27:07,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:27:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-01 00:27:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:27:07,176 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:07,176 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2018-10-01 00:27:07,176 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:07,177 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash 239052638, now seen corresponding path program 16 times [2018-10-01 00:27:07,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:07,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:07,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:07,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:07,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 61 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:07,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:07,321 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 [2018-10-01 00:27:07,329 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:07,353 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:07,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:07,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 61 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:07,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:07,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:27:07,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:27:07,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:27:07,459 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:07,459 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 12 states. [2018-10-01 00:27:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:07,664 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-10-01 00:27:07,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:27:07,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-10-01 00:27:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:07,666 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:27:07,666 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:27:07,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:27:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:27:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2018-10-01 00:27:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:27:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-01 00:27:07,673 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 48 [2018-10-01 00:27:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:07,673 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-01 00:27:07,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:27:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-01 00:27:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:27:07,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:07,674 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 1, 1, 1, 1, 1] [2018-10-01 00:27:07,674 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:07,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:07,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1074641876, now seen corresponding path program 17 times [2018-10-01 00:27:07,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:07,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:07,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:07,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:07,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 180 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:07,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:07,937 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 [2018-10-01 00:27:07,944 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:08,025 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-01 00:27:08,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:08,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 180 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:08,237 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:08,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:27:08,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:27:08,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:27:08,238 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:08,238 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-01 00:27:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:09,311 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-01 00:27:09,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:27:09,312 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2018-10-01 00:27:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:09,312 INFO L225 Difference]: With dead ends: 103 [2018-10-01 00:27:09,312 INFO L226 Difference]: Without dead ends: 56 [2018-10-01 00:27:09,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-01 00:27:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-01 00:27:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-01 00:27:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-10-01 00:27:09,319 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 52 [2018-10-01 00:27:09,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:09,319 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-10-01 00:27:09,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:27:09,319 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-10-01 00:27:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-01 00:27:09,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:09,320 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2018-10-01 00:27:09,320 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:09,321 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1305899827, now seen corresponding path program 18 times [2018-10-01 00:27:09,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:09,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:09,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:09,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:09,485 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:09,485 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 [2018-10-01 00:27:09,492 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:09,566 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-01 00:27:09,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:09,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 73 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:09,688 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:09,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 00:27:09,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:27:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:27:09,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:09,689 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 13 states. [2018-10-01 00:27:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:09,858 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2018-10-01 00:27:09,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:27:09,861 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-10-01 00:27:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:09,862 INFO L225 Difference]: With dead ends: 70 [2018-10-01 00:27:09,862 INFO L226 Difference]: Without dead ends: 64 [2018-10-01 00:27:09,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:27:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-01 00:27:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-10-01 00:27:09,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-01 00:27:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-10-01 00:27:09,868 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 53 [2018-10-01 00:27:09,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:09,868 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-10-01 00:27:09,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:27:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-10-01 00:27:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-01 00:27:09,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:09,869 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2018-10-01 00:27:09,870 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:09,870 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:09,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1754878403, now seen corresponding path program 19 times [2018-10-01 00:27:09,870 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:09,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:09,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,871 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:09,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:10,548 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 [2018-10-01 00:27:10,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:10,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 220 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:10,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:10,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:27:10,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:27:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:27:10,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:10,685 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 24 states. [2018-10-01 00:27:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:11,954 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2018-10-01 00:27:11,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:27:11,954 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 57 [2018-10-01 00:27:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:11,955 INFO L225 Difference]: With dead ends: 112 [2018-10-01 00:27:11,956 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:27:11,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:27:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:27:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:27:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-01 00:27:11,962 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 57 [2018-10-01 00:27:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:11,962 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-01 00:27:11,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:27:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-01 00:27:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:27:11,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:11,963 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2018-10-01 00:27:11,964 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:11,964 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1471794070, now seen corresponding path program 20 times [2018-10-01 00:27:11,964 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:11,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:11,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:11,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:11,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:12,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:12,500 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 [2018-10-01 00:27:12,510 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:12,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:12,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:12,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:12,694 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:12,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:27:12,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:27:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:27:12,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:12,695 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 14 states. [2018-10-01 00:27:12,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:12,911 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-10-01 00:27:12,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:27:12,912 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2018-10-01 00:27:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:12,912 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:27:12,913 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:27:12,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:27:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:27:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2018-10-01 00:27:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:27:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-01 00:27:12,920 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 58 [2018-10-01 00:27:12,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:12,920 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-01 00:27:12,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:27:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-01 00:27:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:27:12,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:12,921 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 1, 1, 1, 1, 1] [2018-10-01 00:27:12,921 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:12,922 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash 716104416, now seen corresponding path program 21 times [2018-10-01 00:27:12,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:12,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:12,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:12,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:12,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 264 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:13,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:13,201 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 [2018-10-01 00:27:13,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:13,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-01 00:27:13,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:13,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 264 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:13,387 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:13,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:27:13,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:27:13,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:27:13,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:13,388 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 26 states. [2018-10-01 00:27:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:14,167 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-01 00:27:14,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:27:14,168 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-01 00:27:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:14,168 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:27:14,168 INFO L226 Difference]: Without dead ends: 66 [2018-10-01 00:27:14,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-01 00:27:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-01 00:27:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-01 00:27:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2018-10-01 00:27:14,174 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 62 [2018-10-01 00:27:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:14,174 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2018-10-01 00:27:14,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:27:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2018-10-01 00:27:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-01 00:27:14,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:14,175 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1] [2018-10-01 00:27:14,175 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:14,175 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1699180391, now seen corresponding path program 22 times [2018-10-01 00:27:14,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:14,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:14,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:14,176 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:14,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 100 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,023 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:15,023 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:15,029 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:15,056 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:15,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:15,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 100 proven. 242 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:15,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 00:27:15,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:27:15,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:27:15,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:15,255 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 15 states. [2018-10-01 00:27:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:15,503 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2018-10-01 00:27:15,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:27:15,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2018-10-01 00:27:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:15,505 INFO L225 Difference]: With dead ends: 80 [2018-10-01 00:27:15,505 INFO L226 Difference]: Without dead ends: 74 [2018-10-01 00:27:15,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:15,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-01 00:27:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2018-10-01 00:27:15,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-01 00:27:15,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2018-10-01 00:27:15,512 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2018-10-01 00:27:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:15,512 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2018-10-01 00:27:15,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:27:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2018-10-01 00:27:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-01 00:27:15,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:15,513 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2018-10-01 00:27:15,513 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:15,513 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1490448497, now seen corresponding path program 23 times [2018-10-01 00:27:15,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:15,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:15,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:15,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:15,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 312 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,760 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:15,760 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:15,767 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:15,804 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-01 00:27:15,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:15,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 312 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:15,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:15,929 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:27:15,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:27:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:27:15,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:15,930 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 28 states. [2018-10-01 00:27:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:17,438 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2018-10-01 00:27:17,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:27:17,439 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 67 [2018-10-01 00:27:17,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:17,440 INFO L225 Difference]: With dead ends: 130 [2018-10-01 00:27:17,440 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:27:17,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:27:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:27:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:27:17,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-01 00:27:17,445 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 67 [2018-10-01 00:27:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:17,446 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-01 00:27:17,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:27:17,446 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-01 00:27:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:27:17,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:17,447 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2018-10-01 00:27:17,447 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:17,447 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1188334966, now seen corresponding path program 24 times [2018-10-01 00:27:17,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:17,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:17,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:17,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:17,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 115 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:17,762 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:17,762 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 [2018-10-01 00:27:17,769 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:17,806 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:27:17,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:17,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 115 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:17,937 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:17,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:27:17,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:27:17,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:27:17,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:17,938 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 16 states. [2018-10-01 00:27:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:18,182 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2018-10-01 00:27:18,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:27:18,182 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2018-10-01 00:27:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:18,183 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:27:18,183 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:27:18,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:27:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:27:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2018-10-01 00:27:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:27:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-01 00:27:18,190 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 68 [2018-10-01 00:27:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:18,191 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-01 00:27:18,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:27:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-01 00:27:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:27:18,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:18,192 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1] [2018-10-01 00:27:18,192 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:18,192 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:18,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1190013460, now seen corresponding path program 25 times [2018-10-01 00:27:18,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:18,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:18,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:18,193 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:18,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 364 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:18,569 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:18,569 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 [2018-10-01 00:27:18,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:18,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 364 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:18,777 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:18,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:27:18,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:27:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:27:18,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:18,779 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 30 states. [2018-10-01 00:27:20,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:20,404 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-01 00:27:20,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:27:20,404 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 72 [2018-10-01 00:27:20,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:20,405 INFO L225 Difference]: With dead ends: 139 [2018-10-01 00:27:20,405 INFO L226 Difference]: Without dead ends: 76 [2018-10-01 00:27:20,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-01 00:27:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-01 00:27:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-01 00:27:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2018-10-01 00:27:20,414 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 72 [2018-10-01 00:27:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:20,414 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2018-10-01 00:27:20,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:27:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2018-10-01 00:27:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-01 00:27:20,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:20,415 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1] [2018-10-01 00:27:20,415 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:20,415 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1746112411, now seen corresponding path program 26 times [2018-10-01 00:27:20,416 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:20,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:20,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:20,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:20,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 131 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:21,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:21,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:21,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:21,172 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:21,172 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:21,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 131 proven. 338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:21,436 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:21,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 00:27:21,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:27:21,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:27:21,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:21,436 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 17 states. [2018-10-01 00:27:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:21,944 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2018-10-01 00:27:21,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:27:21,945 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2018-10-01 00:27:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:21,946 INFO L225 Difference]: With dead ends: 90 [2018-10-01 00:27:21,946 INFO L226 Difference]: Without dead ends: 84 [2018-10-01 00:27:21,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-01 00:27:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2018-10-01 00:27:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-01 00:27:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-10-01 00:27:21,955 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 73 [2018-10-01 00:27:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:21,955 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-10-01 00:27:21,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:27:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-10-01 00:27:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-01 00:27:21,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:21,956 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1] [2018-10-01 00:27:21,957 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:21,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash 613460315, now seen corresponding path program 27 times [2018-10-01 00:27:21,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:21,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:21,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:21,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 420 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,256 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:22,257 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:22,266 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:22,309 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-01 00:27:22,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:22,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 420 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:22,453 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:22,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:27:22,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:27:22,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:27:22,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:22,454 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 32 states. [2018-10-01 00:27:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:22,960 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2018-10-01 00:27:22,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:27:22,960 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 77 [2018-10-01 00:27:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:22,961 INFO L225 Difference]: With dead ends: 148 [2018-10-01 00:27:22,962 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:27:22,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:27:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:27:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:27:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:27:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-01 00:27:22,968 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 77 [2018-10-01 00:27:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:22,968 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-01 00:27:22,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:27:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-01 00:27:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:27:22,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:22,969 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1] [2018-10-01 00:27:22,969 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:22,969 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:22,969 INFO L82 PathProgramCache]: Analyzing trace with hash 381727362, now seen corresponding path program 28 times [2018-10-01 00:27:22,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:22,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:22,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:22,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:22,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 148 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:23,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:23,181 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 [2018-10-01 00:27:23,190 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:23,223 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:23,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:23,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 148 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:23,406 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:23,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:27:23,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:27:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:27:23,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:23,407 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 18 states. [2018-10-01 00:27:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:23,686 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2018-10-01 00:27:23,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:27:23,687 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2018-10-01 00:27:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:23,688 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:27:23,688 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:27:23,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:27:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:27:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2018-10-01 00:27:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:27:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-01 00:27:23,696 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 78 [2018-10-01 00:27:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:23,696 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-01 00:27:23,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:27:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-01 00:27:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:27:23,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:23,697 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 1, 1, 1, 1, 1] [2018-10-01 00:27:23,697 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:23,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1123248904, now seen corresponding path program 29 times [2018-10-01 00:27:23,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:23,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:23,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:23,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:23,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 480 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:24,135 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:24,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:24,143 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:24,192 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-01 00:27:24,193 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:24,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 480 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:24,347 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:24,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:27:24,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:27:24,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:27:24,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:24,348 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 34 states. [2018-10-01 00:27:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:25,761 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-01 00:27:25,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:27:25,762 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 82 [2018-10-01 00:27:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:25,763 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:27:25,763 INFO L226 Difference]: Without dead ends: 86 [2018-10-01 00:27:25,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-01 00:27:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-01 00:27:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-01 00:27:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2018-10-01 00:27:25,772 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 82 [2018-10-01 00:27:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:25,772 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2018-10-01 00:27:25,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:27:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2018-10-01 00:27:25,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-01 00:27:25,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:25,773 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1] [2018-10-01 00:27:25,773 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:25,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:25,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1191652401, now seen corresponding path program 30 times [2018-10-01 00:27:25,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:25,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:25,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:25,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:25,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 166 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:26,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:26,043 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 [2018-10-01 00:27:26,052 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:26,101 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-01 00:27:26,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:26,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 166 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:26,252 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:26,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 00:27:26,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:27:26,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:27:26,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:26,253 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 19 states. [2018-10-01 00:27:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:26,762 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2018-10-01 00:27:26,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:27:26,762 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2018-10-01 00:27:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:26,763 INFO L225 Difference]: With dead ends: 100 [2018-10-01 00:27:26,763 INFO L226 Difference]: Without dead ends: 94 [2018-10-01 00:27:26,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:27:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-01 00:27:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-10-01 00:27:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-01 00:27:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2018-10-01 00:27:26,771 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 83 [2018-10-01 00:27:26,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:26,772 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2018-10-01 00:27:26,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:27:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2018-10-01 00:27:26,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-01 00:27:26,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:26,772 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 1, 1, 1, 1, 1] [2018-10-01 00:27:26,772 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:26,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash 219193127, now seen corresponding path program 31 times [2018-10-01 00:27:26,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:26,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:26,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:26,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:26,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 544 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:27,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:27,098 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 [2018-10-01 00:27:27,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:27,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 544 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:27,404 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:27,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:27:27,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:27:27,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:27:27,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:27,406 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 36 states. [2018-10-01 00:27:29,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:29,570 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2018-10-01 00:27:29,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:27:29,570 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 87 [2018-10-01 00:27:29,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:29,571 INFO L225 Difference]: With dead ends: 166 [2018-10-01 00:27:29,571 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:27:29,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:27:29,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 00:27:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:27:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-01 00:27:29,581 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 87 [2018-10-01 00:27:29,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:29,581 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-01 00:27:29,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:27:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-01 00:27:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:27:29,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:29,582 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1] [2018-10-01 00:27:29,582 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:29,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:29,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1134517362, now seen corresponding path program 32 times [2018-10-01 00:27:29,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:29,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:29,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:29,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:29,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 185 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:29,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:29,887 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 [2018-10-01 00:27:29,895 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:29,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:29,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:29,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 185 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:30,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:30,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:27:30,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:27:30,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:27:30,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:30,117 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 20 states. [2018-10-01 00:27:30,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:30,485 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2018-10-01 00:27:30,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:27:30,486 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2018-10-01 00:27:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:30,487 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:27:30,487 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:27:30,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:27:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:27:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-10-01 00:27:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:27:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-01 00:27:30,500 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 88 [2018-10-01 00:27:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:30,500 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-01 00:27:30,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:27:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-01 00:27:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:27:30,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:30,501 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 1, 1, 1, 1, 1] [2018-10-01 00:27:30,502 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:30,502 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1074454524, now seen corresponding path program 33 times [2018-10-01 00:27:30,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:30,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:30,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:30,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:30,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 612 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:31,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:31,199 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 [2018-10-01 00:27:31,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:31,267 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-01 00:27:31,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:31,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 612 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:31,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:31,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:27:31,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:27:31,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:27:31,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:31,442 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 38 states. [2018-10-01 00:27:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:33,907 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-01 00:27:33,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:27:33,907 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 92 [2018-10-01 00:27:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:33,908 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:27:33,908 INFO L226 Difference]: Without dead ends: 96 [2018-10-01 00:27:33,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:27:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-01 00:27:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-01 00:27:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-01 00:27:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2018-10-01 00:27:33,915 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 92 [2018-10-01 00:27:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:33,915 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2018-10-01 00:27:33,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:27:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2018-10-01 00:27:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-01 00:27:33,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:33,916 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1] [2018-10-01 00:27:33,916 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:33,916 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1513438211, now seen corresponding path program 34 times [2018-10-01 00:27:33,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:33,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:33,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:33,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:33,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 205 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:34,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:34,141 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 [2018-10-01 00:27:34,148 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:34,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:34,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:34,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 205 proven. 578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:34,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:34,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 00:27:34,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:27:34,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:27:34,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:34,829 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand 21 states. [2018-10-01 00:27:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:35,123 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2018-10-01 00:27:35,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:27:35,124 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2018-10-01 00:27:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:35,125 INFO L225 Difference]: With dead ends: 110 [2018-10-01 00:27:35,125 INFO L226 Difference]: Without dead ends: 104 [2018-10-01 00:27:35,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:27:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-01 00:27:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2018-10-01 00:27:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-01 00:27:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2018-10-01 00:27:35,136 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 93 [2018-10-01 00:27:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:35,137 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2018-10-01 00:27:35,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:27:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2018-10-01 00:27:35,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-01 00:27:35,137 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:35,138 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 1, 1, 1, 1, 1] [2018-10-01 00:27:35,138 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:35,138 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:35,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1385467661, now seen corresponding path program 35 times [2018-10-01 00:27:35,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:35,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:35,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:35,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:35,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 684 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:35,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:35,524 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 [2018-10-01 00:27:35,531 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:35,588 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-01 00:27:35,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:35,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 684 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:35,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:35,780 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:27:35,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:27:35,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:27:35,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:35,781 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 40 states. [2018-10-01 00:27:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:39,433 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2018-10-01 00:27:39,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:27:39,433 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 97 [2018-10-01 00:27:39,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:39,434 INFO L225 Difference]: With dead ends: 184 [2018-10-01 00:27:39,434 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:27:39,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:39,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:27:39,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:27:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:27:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-01 00:27:39,444 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 97 [2018-10-01 00:27:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:39,445 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-01 00:27:39,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:27:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-01 00:27:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:27:39,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:39,446 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1] [2018-10-01 00:27:39,446 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:39,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:39,446 INFO L82 PathProgramCache]: Analyzing trace with hash -209035110, now seen corresponding path program 36 times [2018-10-01 00:27:39,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:39,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:39,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:39,447 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:39,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 226 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:39,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:39,781 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 [2018-10-01 00:27:39,790 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:39,853 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:27:39,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:39,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 226 proven. 648 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:40,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:40,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:27:40,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:27:40,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:27:40,057 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:40,057 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 22 states. [2018-10-01 00:27:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:40,439 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2018-10-01 00:27:40,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:27:40,440 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2018-10-01 00:27:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:40,441 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:27:40,441 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:27:40,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:27:40,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:27:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-10-01 00:27:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:27:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-01 00:27:40,452 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 98 [2018-10-01 00:27:40,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:40,453 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-01 00:27:40,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:27:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-01 00:27:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:27:40,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:40,454 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 1, 1, 1, 1, 1] [2018-10-01 00:27:40,454 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:40,454 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1566476528, now seen corresponding path program 37 times [2018-10-01 00:27:40,454 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:40,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:40,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:40,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:40,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 760 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:42,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:42,039 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 [2018-10-01 00:27:42,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:42,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 760 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:42,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:42,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:27:42,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:27:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:27:42,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:42,285 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 42 states. [2018-10-01 00:27:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:45,147 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-01 00:27:45,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:27:45,147 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 102 [2018-10-01 00:27:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:45,148 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:27:45,148 INFO L226 Difference]: Without dead ends: 106 [2018-10-01 00:27:45,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:27:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-01 00:27:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-01 00:27:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-01 00:27:45,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2018-10-01 00:27:45,162 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 102 [2018-10-01 00:27:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:45,162 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2018-10-01 00:27:45,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:27:45,163 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2018-10-01 00:27:45,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-01 00:27:45,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:45,164 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2018-10-01 00:27:45,164 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:45,164 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1920546761, now seen corresponding path program 38 times [2018-10-01 00:27:45,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:45,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:45,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:45,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:27:45,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 248 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:45,960 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:45,960 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:45,971 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:27:46,037 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:27:46,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:46,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 248 proven. 722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:46,238 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:46,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 00:27:46,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:27:46,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:27:46,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:46,239 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 23 states. [2018-10-01 00:27:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:46,561 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2018-10-01 00:27:46,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:27:46,562 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 103 [2018-10-01 00:27:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:46,563 INFO L225 Difference]: With dead ends: 120 [2018-10-01 00:27:46,563 INFO L226 Difference]: Without dead ends: 114 [2018-10-01 00:27:46,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:27:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-01 00:27:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2018-10-01 00:27:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-01 00:27:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2018-10-01 00:27:46,575 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 103 [2018-10-01 00:27:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:46,575 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2018-10-01 00:27:46,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:27:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2018-10-01 00:27:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-01 00:27:46,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:46,576 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 1, 1, 1, 1, 1] [2018-10-01 00:27:46,576 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:46,576 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash -756867393, now seen corresponding path program 39 times [2018-10-01 00:27:46,577 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:46,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:46,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:46,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:46,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 840 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:47,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:47,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:47,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:27:47,249 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-01 00:27:47,250 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:47,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1050 backedges. 840 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:48,416 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:48,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:27:48,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:27:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:27:48,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:48,417 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 44 states. [2018-10-01 00:27:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:51,435 INFO L93 Difference]: Finished difference Result 202 states and 206 transitions. [2018-10-01 00:27:51,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:27:51,435 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 107 [2018-10-01 00:27:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:51,436 INFO L225 Difference]: With dead ends: 202 [2018-10-01 00:27:51,436 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:27:51,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:27:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:27:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 00:27:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:27:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-01 00:27:51,446 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 107 [2018-10-01 00:27:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:51,446 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-01 00:27:51,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:27:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-01 00:27:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:27:51,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:51,447 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1, 1] [2018-10-01 00:27:51,447 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:51,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:51,448 INFO L82 PathProgramCache]: Analyzing trace with hash 798222758, now seen corresponding path program 40 times [2018-10-01 00:27:51,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:51,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:51,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:51,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:51,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 271 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:52,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:52,254 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 [2018-10-01 00:27:52,261 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:27:52,308 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:27:52,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:52,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 271 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:52,509 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:52,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:27:52,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:27:52,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:27:52,510 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:52,510 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 24 states. [2018-10-01 00:27:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:52,854 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2018-10-01 00:27:52,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:27:52,854 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 108 [2018-10-01 00:27:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:52,855 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:27:52,856 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:27:52,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:27:52,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:27:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2018-10-01 00:27:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:27:52,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-01 00:27:52,870 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 108 [2018-10-01 00:27:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:52,870 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-01 00:27:52,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:27:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-01 00:27:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:27:52,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:52,871 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 1, 1, 1, 1, 1] [2018-10-01 00:27:52,871 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:52,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1030199836, now seen corresponding path program 41 times [2018-10-01 00:27:52,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:52,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:52,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:52,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:52,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 924 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:53,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:53,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:27:53,909 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:27:53,977 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-01 00:27:53,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:53,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1155 backedges. 924 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:54,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:54,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:27:54,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:27:54,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:27:54,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:54,227 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 46 states. [2018-10-01 00:27:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:27:57,758 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-01 00:27:57,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:27:57,758 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 112 [2018-10-01 00:27:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:27:57,759 INFO L225 Difference]: With dead ends: 211 [2018-10-01 00:27:57,759 INFO L226 Difference]: Without dead ends: 116 [2018-10-01 00:27:57,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:27:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-01 00:27:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-01 00:27:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-01 00:27:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2018-10-01 00:27:57,772 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 112 [2018-10-01 00:27:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:27:57,772 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2018-10-01 00:27:57,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:27:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2018-10-01 00:27:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-01 00:27:57,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:27:57,773 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1, 1] [2018-10-01 00:27:57,774 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:27:57,774 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:27:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1949005931, now seen corresponding path program 42 times [2018-10-01 00:27:57,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:27:57,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:27:57,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:57,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:27:57,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:27:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:27:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 295 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:27:59,410 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 [2018-10-01 00:27:59,417 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:27:59,521 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-01 00:27:59,521 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:27:59,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:27:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 295 proven. 882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:27:59,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:27:59,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 00:27:59,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:27:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:27:59,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:27:59,736 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 25 states. [2018-10-01 00:28:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:00,184 INFO L93 Difference]: Finished difference Result 130 states and 133 transitions. [2018-10-01 00:28:00,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:28:00,184 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 113 [2018-10-01 00:28:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:00,185 INFO L225 Difference]: With dead ends: 130 [2018-10-01 00:28:00,185 INFO L226 Difference]: Without dead ends: 124 [2018-10-01 00:28:00,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:28:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-01 00:28:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2018-10-01 00:28:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-10-01 00:28:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2018-10-01 00:28:00,195 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 113 [2018-10-01 00:28:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:00,195 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2018-10-01 00:28:00,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:28:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2018-10-01 00:28:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-01 00:28:00,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:00,196 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2018-10-01 00:28:00,196 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:00,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash 725198987, now seen corresponding path program 43 times [2018-10-01 00:28:00,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:00,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:00,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:00,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:00,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 1012 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:00,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:00,900 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:00,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:00,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 1012 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:01,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:01,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:28:01,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:28:01,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:28:01,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:01,189 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 48 states. [2018-10-01 00:28:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:03,828 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2018-10-01 00:28:03,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:28:03,828 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 117 [2018-10-01 00:28:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:03,828 INFO L225 Difference]: With dead ends: 220 [2018-10-01 00:28:03,829 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:28:03,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:28:03,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:28:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:28:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:28:03,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-01 00:28:03,837 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 117 [2018-10-01 00:28:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:03,838 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-01 00:28:03,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:28:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-01 00:28:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:28:03,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:03,839 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2018-10-01 00:28:03,839 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:03,839 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:03,839 INFO L82 PathProgramCache]: Analyzing trace with hash 995311282, now seen corresponding path program 44 times [2018-10-01 00:28:03,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:03,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:03,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:03,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:03,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 320 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:04,170 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:04,170 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:04,178 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:04,232 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:04,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:04,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 320 proven. 968 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:04,724 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:04,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:28:04,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:28:04,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:28:04,725 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:04,725 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 26 states. [2018-10-01 00:28:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:05,105 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2018-10-01 00:28:05,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:28:05,105 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 118 [2018-10-01 00:28:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:05,106 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:28:05,106 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:28:05,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:28:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:28:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2018-10-01 00:28:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:28:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-01 00:28:05,120 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 118 [2018-10-01 00:28:05,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:05,120 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-01 00:28:05,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:28:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-01 00:28:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:28:05,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:05,121 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 1, 1, 1, 1, 1] [2018-10-01 00:28:05,122 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:05,122 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:05,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1935656, now seen corresponding path program 45 times [2018-10-01 00:28:05,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:05,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:05,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:05,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:05,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 1104 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:05,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:05,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:05,820 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:05,897 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-01 00:28:05,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:05,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 1104 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:06,110 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:06,110 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:28:06,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:28:06,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:28:06,111 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:06,111 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 50 states. [2018-10-01 00:28:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:09,526 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-01 00:28:09,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:28:09,526 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 122 [2018-10-01 00:28:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:09,527 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:28:09,527 INFO L226 Difference]: Without dead ends: 126 [2018-10-01 00:28:09,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:28:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-01 00:28:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-01 00:28:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-01 00:28:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2018-10-01 00:28:09,540 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 122 [2018-10-01 00:28:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:09,541 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2018-10-01 00:28:09,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:28:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2018-10-01 00:28:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-01 00:28:09,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:09,542 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1, 1] [2018-10-01 00:28:09,542 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:09,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:09,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1360966497, now seen corresponding path program 46 times [2018-10-01 00:28:09,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:09,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:09,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:09,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:09,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 346 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:09,870 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:09,870 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:09,877 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:09,935 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:09,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:09,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 346 proven. 1058 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:10,215 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:10,215 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 00:28:10,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:28:10,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:28:10,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:10,216 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 27 states. [2018-10-01 00:28:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:10,605 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2018-10-01 00:28:10,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:28:10,605 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 123 [2018-10-01 00:28:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:10,606 INFO L225 Difference]: With dead ends: 140 [2018-10-01 00:28:10,606 INFO L226 Difference]: Without dead ends: 134 [2018-10-01 00:28:10,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:28:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-10-01 00:28:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2018-10-01 00:28:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-10-01 00:28:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2018-10-01 00:28:10,619 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2018-10-01 00:28:10,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:10,619 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2018-10-01 00:28:10,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:28:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2018-10-01 00:28:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-01 00:28:10,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:10,620 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 1, 1, 1, 1, 1] [2018-10-01 00:28:10,621 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:10,621 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1531900329, now seen corresponding path program 47 times [2018-10-01 00:28:10,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:10,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:10,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:10,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:10,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1200 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:11,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:11,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:11,665 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:11,739 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-01 00:28:11,739 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:11,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 1200 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:11,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:11,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:28:11,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:28:11,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:28:11,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:11,958 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 52 states. [2018-10-01 00:28:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:16,416 INFO L93 Difference]: Finished difference Result 238 states and 242 transitions. [2018-10-01 00:28:16,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:28:16,416 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 127 [2018-10-01 00:28:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:16,417 INFO L225 Difference]: With dead ends: 238 [2018-10-01 00:28:16,417 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:28:16,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:28:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:28:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 00:28:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:28:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-01 00:28:16,427 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 127 [2018-10-01 00:28:16,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:16,427 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-01 00:28:16,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:28:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-01 00:28:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:28:16,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:16,428 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1, 1] [2018-10-01 00:28:16,429 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:16,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:16,429 INFO L82 PathProgramCache]: Analyzing trace with hash -652320834, now seen corresponding path program 48 times [2018-10-01 00:28:16,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:16,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:16,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:16,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:16,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 373 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:16,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:16,680 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 [2018-10-01 00:28:16,688 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:16,769 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:28:16,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:16,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 373 proven. 1152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:17,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:17,066 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:28:17,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:28:17,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:28:17,067 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:17,067 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 28 states. [2018-10-01 00:28:17,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:17,496 INFO L93 Difference]: Finished difference Result 145 states and 148 transitions. [2018-10-01 00:28:17,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:28:17,497 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 128 [2018-10-01 00:28:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:17,498 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:28:17,498 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:28:17,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:28:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:28:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2018-10-01 00:28:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:28:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-01 00:28:17,513 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 128 [2018-10-01 00:28:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:17,513 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-01 00:28:17,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:28:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-01 00:28:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:28:17,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:17,514 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 1, 1, 1, 1, 1] [2018-10-01 00:28:17,515 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:17,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:17,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1843837900, now seen corresponding path program 49 times [2018-10-01 00:28:17,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:17,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:17,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:17,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:17,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:18,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:18,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:18,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:28:18,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:18,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 1300 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:20,964 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:20,964 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:28:20,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:28:20,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:28:20,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:20,965 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 54 states. [2018-10-01 00:28:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:22,387 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-01 00:28:22,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:28:22,387 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 132 [2018-10-01 00:28:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:22,388 INFO L225 Difference]: With dead ends: 247 [2018-10-01 00:28:22,388 INFO L226 Difference]: Without dead ends: 136 [2018-10-01 00:28:22,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 00:28:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-10-01 00:28:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-10-01 00:28:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-10-01 00:28:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2018-10-01 00:28:22,399 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 132 [2018-10-01 00:28:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:22,399 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2018-10-01 00:28:22,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:28:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2018-10-01 00:28:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-01 00:28:22,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:22,400 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1, 1] [2018-10-01 00:28:22,400 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:22,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 35240749, now seen corresponding path program 50 times [2018-10-01 00:28:22,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:22,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:22,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:22,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:22,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 401 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:22,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:22,657 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 [2018-10-01 00:28:22,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:22,726 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:22,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:22,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 401 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:23,196 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:23,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 00:28:23,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:28:23,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:28:23,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:23,197 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand 29 states. [2018-10-01 00:28:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:23,680 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2018-10-01 00:28:23,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:28:23,680 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 133 [2018-10-01 00:28:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:23,681 INFO L225 Difference]: With dead ends: 150 [2018-10-01 00:28:23,681 INFO L226 Difference]: Without dead ends: 144 [2018-10-01 00:28:23,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-10-01 00:28:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2018-10-01 00:28:23,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-01 00:28:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2018-10-01 00:28:23,696 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 133 [2018-10-01 00:28:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:23,696 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2018-10-01 00:28:23,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:28:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2018-10-01 00:28:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-01 00:28:23,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:23,697 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2018-10-01 00:28:23,698 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:23,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:23,698 INFO L82 PathProgramCache]: Analyzing trace with hash -838119389, now seen corresponding path program 51 times [2018-10-01 00:28:23,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:23,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:23,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:23,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:23,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1404 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:24,113 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:24,113 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:24,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:24,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-01 00:28:24,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:24,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1404 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:24,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:24,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:28:24,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:28:24,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:28:24,496 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:24,496 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 56 states. [2018-10-01 00:28:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:29,631 INFO L93 Difference]: Finished difference Result 256 states and 260 transitions. [2018-10-01 00:28:29,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:28:29,631 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 137 [2018-10-01 00:28:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:29,632 INFO L225 Difference]: With dead ends: 256 [2018-10-01 00:28:29,633 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:28:29,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:28:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:28:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:28:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:28:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-01 00:28:29,644 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 137 [2018-10-01 00:28:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:29,644 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-01 00:28:29,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:28:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-01 00:28:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:28:29,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:29,645 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1, 1] [2018-10-01 00:28:29,645 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:29,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:29,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1657490634, now seen corresponding path program 52 times [2018-10-01 00:28:29,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:29,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:29,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:29,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:29,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 430 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:30,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:30,019 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 [2018-10-01 00:28:30,026 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:30,085 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:30,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:30,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 430 proven. 1352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:30,505 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:30,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:28:30,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:28:30,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:28:30,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:30,506 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 30 states. [2018-10-01 00:28:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:30,942 INFO L93 Difference]: Finished difference Result 155 states and 158 transitions. [2018-10-01 00:28:30,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:28:30,942 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 138 [2018-10-01 00:28:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:30,943 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:28:30,943 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:28:30,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:28:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:28:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-10-01 00:28:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:28:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-01 00:28:30,955 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 138 [2018-10-01 00:28:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:30,956 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-01 00:28:30,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:28:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-01 00:28:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:28:30,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:30,957 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 1, 1, 1, 1, 1] [2018-10-01 00:28:30,957 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:30,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1915800384, now seen corresponding path program 53 times [2018-10-01 00:28:30,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:30,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:30,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:30,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:30,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1512 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:31,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:31,415 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:31,425 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:31,511 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-01 00:28:31,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:31,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1512 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:31,846 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:31,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:28:31,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:28:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:28:31,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:31,847 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 58 states. [2018-10-01 00:28:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:37,308 INFO L93 Difference]: Finished difference Result 265 states and 269 transitions. [2018-10-01 00:28:37,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:28:37,308 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 142 [2018-10-01 00:28:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:37,309 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:28:37,309 INFO L226 Difference]: Without dead ends: 146 [2018-10-01 00:28:37,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:28:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-10-01 00:28:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-10-01 00:28:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-10-01 00:28:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2018-10-01 00:28:37,322 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 142 [2018-10-01 00:28:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:37,322 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2018-10-01 00:28:37,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:28:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2018-10-01 00:28:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-01 00:28:37,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:37,323 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1, 1] [2018-10-01 00:28:37,323 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:37,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:37,324 INFO L82 PathProgramCache]: Analyzing trace with hash 520593145, now seen corresponding path program 54 times [2018-10-01 00:28:37,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:37,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:37,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:37,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:37,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 460 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:37,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:37,573 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 [2018-10-01 00:28:37,580 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:28:37,668 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-01 00:28:37,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:37,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 460 proven. 1458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:38,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:38,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 00:28:38,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:28:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:28:38,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:38,040 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 31 states. [2018-10-01 00:28:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:38,690 INFO L93 Difference]: Finished difference Result 160 states and 163 transitions. [2018-10-01 00:28:38,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:28:38,691 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 143 [2018-10-01 00:28:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:38,691 INFO L225 Difference]: With dead ends: 160 [2018-10-01 00:28:38,692 INFO L226 Difference]: Without dead ends: 154 [2018-10-01 00:28:38,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:28:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-10-01 00:28:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-10-01 00:28:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-01 00:28:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2018-10-01 00:28:38,703 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 143 [2018-10-01 00:28:38,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:38,704 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2018-10-01 00:28:38,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:28:38,704 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2018-10-01 00:28:38,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-01 00:28:38,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:38,704 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 1, 1, 1, 1, 1] [2018-10-01 00:28:38,704 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:38,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:38,705 INFO L82 PathProgramCache]: Analyzing trace with hash 915041775, now seen corresponding path program 55 times [2018-10-01 00:28:38,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:38,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:38,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:38,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:38,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1624 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:39,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:39,143 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 [2018-10-01 00:28:39,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:39,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 1624 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:39,802 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:39,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:28:39,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:28:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:28:39,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:39,803 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 60 states. [2018-10-01 00:28:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:45,638 INFO L93 Difference]: Finished difference Result 274 states and 278 transitions. [2018-10-01 00:28:45,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:28:45,638 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 147 [2018-10-01 00:28:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:45,639 INFO L225 Difference]: With dead ends: 274 [2018-10-01 00:28:45,639 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:28:45,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:28:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:28:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 00:28:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:28:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-01 00:28:45,656 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 147 [2018-10-01 00:28:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:45,656 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-01 00:28:45,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:28:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-01 00:28:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:28:45,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:45,657 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1, 1] [2018-10-01 00:28:45,657 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:45,657 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1773143510, now seen corresponding path program 56 times [2018-10-01 00:28:45,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:45,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:45,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:45,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:28:45,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 491 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:45,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:45,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:45,915 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:28:45,980 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:28:45,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:45,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 491 proven. 1568 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:46,235 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:46,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:28:46,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:28:46,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:28:46,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:46,236 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 32 states. [2018-10-01 00:28:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:46,794 INFO L93 Difference]: Finished difference Result 165 states and 168 transitions. [2018-10-01 00:28:46,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:28:46,795 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 148 [2018-10-01 00:28:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:46,795 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:28:46,795 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:28:46,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:28:46,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:28:46,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-10-01 00:28:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:28:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-01 00:28:46,809 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 148 [2018-10-01 00:28:46,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:46,809 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-01 00:28:46,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:28:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-01 00:28:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:28:46,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:46,810 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 1, 1, 1, 1, 1] [2018-10-01 00:28:46,810 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:46,810 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:46,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1766187444, now seen corresponding path program 57 times [2018-10-01 00:28:46,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:46,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:46,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:46,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:46,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1740 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:47,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:47,286 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:47,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:28:47,394 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-01 00:28:47,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:47,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 1740 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:47,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:47,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:28:47,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:28:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:28:47,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:47,745 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 62 states. [2018-10-01 00:28:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:54,259 INFO L93 Difference]: Finished difference Result 283 states and 287 transitions. [2018-10-01 00:28:54,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:28:54,259 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 152 [2018-10-01 00:28:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:54,260 INFO L225 Difference]: With dead ends: 283 [2018-10-01 00:28:54,260 INFO L226 Difference]: Without dead ends: 156 [2018-10-01 00:28:54,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:28:54,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-01 00:28:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-10-01 00:28:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-10-01 00:28:54,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2018-10-01 00:28:54,273 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 152 [2018-10-01 00:28:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:54,273 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2018-10-01 00:28:54,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:28:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2018-10-01 00:28:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-01 00:28:54,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:54,274 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1, 1] [2018-10-01 00:28:54,274 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:54,274 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:54,274 INFO L82 PathProgramCache]: Analyzing trace with hash -928358715, now seen corresponding path program 58 times [2018-10-01 00:28:54,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:54,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:54,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:54,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:54,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 523 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:54,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:54,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:28:54,558 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:28:54,630 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:28:54,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:54,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 523 proven. 1682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:54,966 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:54,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 00:28:54,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:28:54,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:28:54,967 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:54,967 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 33 states. [2018-10-01 00:28:55,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:28:55,612 INFO L93 Difference]: Finished difference Result 170 states and 173 transitions. [2018-10-01 00:28:55,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:28:55,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 153 [2018-10-01 00:28:55,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:28:55,613 INFO L225 Difference]: With dead ends: 170 [2018-10-01 00:28:55,613 INFO L226 Difference]: Without dead ends: 164 [2018-10-01 00:28:55,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:28:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-10-01 00:28:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2018-10-01 00:28:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-10-01 00:28:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 162 transitions. [2018-10-01 00:28:55,627 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 162 transitions. Word has length 153 [2018-10-01 00:28:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:28:55,627 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 162 transitions. [2018-10-01 00:28:55,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:28:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 162 transitions. [2018-10-01 00:28:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-01 00:28:55,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:28:55,628 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 1, 1, 1, 1, 1] [2018-10-01 00:28:55,628 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:28:55,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:28:55,629 INFO L82 PathProgramCache]: Analyzing trace with hash -839882821, now seen corresponding path program 59 times [2018-10-01 00:28:55,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:28:55,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:28:55,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:55,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:28:55,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:28:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:28:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 1860 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:56,103 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:28:56,103 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 [2018-10-01 00:28:56,110 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:28:56,206 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-01 00:28:56,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:28:56,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:28:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 1860 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:28:56,471 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:28:56,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:28:56,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:28:56,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:28:56,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:28:56,472 INFO L87 Difference]: Start difference. First operand 160 states and 162 transitions. Second operand 64 states. [2018-10-01 00:29:00,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:00,807 INFO L93 Difference]: Finished difference Result 292 states and 296 transitions. [2018-10-01 00:29:00,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:29:00,807 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 157 [2018-10-01 00:29:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:00,808 INFO L225 Difference]: With dead ends: 292 [2018-10-01 00:29:00,808 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:29:00,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:29:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:29:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:29:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:29:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-01 00:29:00,827 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 157 [2018-10-01 00:29:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:00,827 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-01 00:29:00,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:29:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-01 00:29:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:29:00,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:00,828 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1] [2018-10-01 00:29:00,828 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:00,828 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1453492962, now seen corresponding path program 60 times [2018-10-01 00:29:00,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:00,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:00,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:00,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:00,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 556 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:01,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:01,106 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 [2018-10-01 00:29:01,122 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:01,285 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:29:01,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:01,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 556 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:01,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:01,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:29:01,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:29:01,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:29:01,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:01,558 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 34 states. [2018-10-01 00:29:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:02,064 INFO L93 Difference]: Finished difference Result 175 states and 178 transitions. [2018-10-01 00:29:02,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:29:02,065 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 158 [2018-10-01 00:29:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:02,065 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:29:02,065 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:29:02,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:29:02,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:29:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2018-10-01 00:29:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:29:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-01 00:29:02,084 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 158 [2018-10-01 00:29:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:02,084 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-01 00:29:02,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:29:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-01 00:29:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:29:02,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:02,085 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 1, 1, 1, 1, 1] [2018-10-01 00:29:02,085 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:02,086 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash 227229016, now seen corresponding path program 61 times [2018-10-01 00:29:02,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:02,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:02,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:02,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:02,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1984 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:02,631 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:02,632 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 [2018-10-01 00:29:02,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:02,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2480 backedges. 1984 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:02,985 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:02,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:29:02,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:29:02,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:29:02,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:02,986 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 66 states. [2018-10-01 00:29:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:09,287 INFO L93 Difference]: Finished difference Result 301 states and 305 transitions. [2018-10-01 00:29:09,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:29:09,288 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 162 [2018-10-01 00:29:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:09,288 INFO L225 Difference]: With dead ends: 301 [2018-10-01 00:29:09,288 INFO L226 Difference]: Without dead ends: 166 [2018-10-01 00:29:09,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-10-01 00:29:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2018-10-01 00:29:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-10-01 00:29:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2018-10-01 00:29:09,308 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 162 [2018-10-01 00:29:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:09,308 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2018-10-01 00:29:09,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:29:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2018-10-01 00:29:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-01 00:29:09,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:09,309 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1, 1] [2018-10-01 00:29:09,309 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:09,309 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash 541325969, now seen corresponding path program 62 times [2018-10-01 00:29:09,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:09,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:09,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:09,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:09,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 590 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:09,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:09,610 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 [2018-10-01 00:29:09,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:09,695 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:09,695 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:09,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 590 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:09,976 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:09,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 00:29:09,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:29:09,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:29:09,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:09,977 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 35 states. [2018-10-01 00:29:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:10,550 INFO L93 Difference]: Finished difference Result 180 states and 183 transitions. [2018-10-01 00:29:10,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:29:10,551 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 163 [2018-10-01 00:29:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:10,552 INFO L225 Difference]: With dead ends: 180 [2018-10-01 00:29:10,552 INFO L226 Difference]: Without dead ends: 174 [2018-10-01 00:29:10,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:29:10,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-10-01 00:29:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2018-10-01 00:29:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-10-01 00:29:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 172 transitions. [2018-10-01 00:29:10,568 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 172 transitions. Word has length 163 [2018-10-01 00:29:10,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:10,569 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 172 transitions. [2018-10-01 00:29:10,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:29:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 172 transitions. [2018-10-01 00:29:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-01 00:29:10,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:10,570 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 1, 1, 1, 1, 1] [2018-10-01 00:29:10,570 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:10,570 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1149189511, now seen corresponding path program 63 times [2018-10-01 00:29:10,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:10,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:10,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:10,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:10,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2112 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:11,108 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:11,108 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 [2018-10-01 00:29:11,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:11,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-01 00:29:11,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:11,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 2112 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:11,521 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:11,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:29:11,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:29:11,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:29:11,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:11,522 INFO L87 Difference]: Start difference. First operand 170 states and 172 transitions. Second operand 68 states. [2018-10-01 00:29:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:13,179 INFO L93 Difference]: Finished difference Result 310 states and 314 transitions. [2018-10-01 00:29:13,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:29:13,179 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 167 [2018-10-01 00:29:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:13,180 INFO L225 Difference]: With dead ends: 310 [2018-10-01 00:29:13,180 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:29:13,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:29:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:29:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 00:29:13,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:29:13,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-01 00:29:13,194 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 167 [2018-10-01 00:29:13,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:13,195 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-01 00:29:13,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:29:13,195 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-01 00:29:13,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:29:13,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:13,196 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1, 1] [2018-10-01 00:29:13,196 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:13,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:13,196 INFO L82 PathProgramCache]: Analyzing trace with hash 167304174, now seen corresponding path program 64 times [2018-10-01 00:29:13,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:13,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:13,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:13,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:13,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 625 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:13,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:13,605 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 [2018-10-01 00:29:13,618 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:13,696 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:13,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:13,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 625 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:14,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:14,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:29:14,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:29:14,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:29:14,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:14,246 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 36 states. [2018-10-01 00:29:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:14,906 INFO L93 Difference]: Finished difference Result 185 states and 188 transitions. [2018-10-01 00:29:14,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:29:14,907 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 168 [2018-10-01 00:29:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:14,908 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:29:14,908 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:29:14,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:29:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:29:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-10-01 00:29:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:29:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-01 00:29:14,929 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 168 [2018-10-01 00:29:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:14,929 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-01 00:29:14,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:29:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-01 00:29:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:29:14,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:14,930 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 1, 1, 1, 1, 1] [2018-10-01 00:29:14,931 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:14,931 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:14,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1678104476, now seen corresponding path program 65 times [2018-10-01 00:29:14,931 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:14,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:14,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:14,932 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:14,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 2244 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:15,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:15,492 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 [2018-10-01 00:29:15,500 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:15,607 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-01 00:29:15,608 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:15,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2805 backedges. 2244 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:16,140 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:16,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:29:16,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:29:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:29:16,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:16,141 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 70 states. [2018-10-01 00:29:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:23,945 INFO L93 Difference]: Finished difference Result 319 states and 323 transitions. [2018-10-01 00:29:23,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:29:23,945 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 172 [2018-10-01 00:29:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:23,946 INFO L225 Difference]: With dead ends: 319 [2018-10-01 00:29:23,946 INFO L226 Difference]: Without dead ends: 176 [2018-10-01 00:29:23,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:29:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-01 00:29:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2018-10-01 00:29:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-10-01 00:29:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 178 transitions. [2018-10-01 00:29:23,964 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 178 transitions. Word has length 172 [2018-10-01 00:29:23,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:23,964 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 178 transitions. [2018-10-01 00:29:23,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:29:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 178 transitions. [2018-10-01 00:29:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-01 00:29:23,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:23,965 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1, 1] [2018-10-01 00:29:23,965 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:23,965 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:23,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1483312547, now seen corresponding path program 66 times [2018-10-01 00:29:23,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:23,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:23,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:23,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:23,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 661 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:24,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:24,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:29:24,524 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:24,636 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-01 00:29:24,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:24,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 661 proven. 2178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:24,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:24,932 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 00:29:24,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:29:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:29:24,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:24,933 INFO L87 Difference]: Start difference. First operand 176 states and 178 transitions. Second operand 37 states. [2018-10-01 00:29:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:25,493 INFO L93 Difference]: Finished difference Result 190 states and 193 transitions. [2018-10-01 00:29:25,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:29:25,493 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 173 [2018-10-01 00:29:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:25,494 INFO L225 Difference]: With dead ends: 190 [2018-10-01 00:29:25,494 INFO L226 Difference]: Without dead ends: 184 [2018-10-01 00:29:25,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:29:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-01 00:29:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2018-10-01 00:29:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-01 00:29:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2018-10-01 00:29:25,510 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 173 [2018-10-01 00:29:25,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:25,510 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2018-10-01 00:29:25,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:29:25,510 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2018-10-01 00:29:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-01 00:29:25,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:25,511 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 1, 1, 1, 1, 1] [2018-10-01 00:29:25,512 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:25,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1794699091, now seen corresponding path program 67 times [2018-10-01 00:29:25,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:25,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:25,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:25,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:25,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 2380 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:26,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:26,249 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 [2018-10-01 00:29:26,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:26,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2975 backedges. 2380 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:26,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:26,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:29:26,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:29:26,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:29:26,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:26,627 INFO L87 Difference]: Start difference. First operand 180 states and 182 transitions. Second operand 72 states. [2018-10-01 00:29:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:35,170 INFO L93 Difference]: Finished difference Result 328 states and 332 transitions. [2018-10-01 00:29:35,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:29:35,170 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 177 [2018-10-01 00:29:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:35,171 INFO L225 Difference]: With dead ends: 328 [2018-10-01 00:29:35,171 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:29:35,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:29:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:29:35,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:29:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:29:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-01 00:29:35,188 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 177 [2018-10-01 00:29:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:35,188 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-01 00:29:35,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:29:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-01 00:29:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:29:35,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:35,190 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1, 1] [2018-10-01 00:29:35,190 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:35,190 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2072574202, now seen corresponding path program 68 times [2018-10-01 00:29:35,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:35,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:35,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:35,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:35,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 698 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:35,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:35,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:29:35,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:29:35,616 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:29:35,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:35,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 698 proven. 2312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:35,916 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:35,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:29:35,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:29:35,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:29:35,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:35,917 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 38 states. [2018-10-01 00:29:36,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:36,505 INFO L93 Difference]: Finished difference Result 195 states and 198 transitions. [2018-10-01 00:29:36,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:29:36,506 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 178 [2018-10-01 00:29:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:36,506 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:29:36,506 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:29:36,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:29:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:29:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2018-10-01 00:29:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:29:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-01 00:29:36,523 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 178 [2018-10-01 00:29:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:36,523 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-01 00:29:36,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:29:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-01 00:29:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:29:36,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:36,525 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 1, 1, 1, 1, 1] [2018-10-01 00:29:36,525 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:36,525 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1591533424, now seen corresponding path program 69 times [2018-10-01 00:29:36,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:36,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:36,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:36,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:36,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 2520 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:37,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:37,122 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 [2018-10-01 00:29:37,129 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:29:37,295 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-01 00:29:37,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:37,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 2520 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:37,658 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:37,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:29:37,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:29:37,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:29:37,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:37,660 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 74 states. [2018-10-01 00:29:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:46,640 INFO L93 Difference]: Finished difference Result 337 states and 341 transitions. [2018-10-01 00:29:46,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:29:46,640 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 182 [2018-10-01 00:29:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:46,641 INFO L225 Difference]: With dead ends: 337 [2018-10-01 00:29:46,641 INFO L226 Difference]: Without dead ends: 186 [2018-10-01 00:29:46,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:29:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-01 00:29:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-10-01 00:29:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-01 00:29:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2018-10-01 00:29:46,662 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 182 [2018-10-01 00:29:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:46,663 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2018-10-01 00:29:46,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:29:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2018-10-01 00:29:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-01 00:29:46,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:46,664 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1, 1] [2018-10-01 00:29:46,664 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:46,664 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1595685335, now seen corresponding path program 70 times [2018-10-01 00:29:46,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:46,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:46,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:46,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:46,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 736 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:47,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:47,089 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 [2018-10-01 00:29:47,096 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:29:47,182 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:29:47,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:47,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 736 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:47,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:47,530 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 00:29:47,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:29:47,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:29:47,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:47,531 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 39 states. [2018-10-01 00:29:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:48,227 INFO L93 Difference]: Finished difference Result 200 states and 203 transitions. [2018-10-01 00:29:48,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:29:48,228 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 183 [2018-10-01 00:29:48,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:48,228 INFO L225 Difference]: With dead ends: 200 [2018-10-01 00:29:48,228 INFO L226 Difference]: Without dead ends: 194 [2018-10-01 00:29:48,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:29:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-10-01 00:29:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 190. [2018-10-01 00:29:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-10-01 00:29:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2018-10-01 00:29:48,246 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 183 [2018-10-01 00:29:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:48,246 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2018-10-01 00:29:48,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:29:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2018-10-01 00:29:48,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-01 00:29:48,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:48,247 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 1, 1, 1, 1, 1] [2018-10-01 00:29:48,247 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:48,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:48,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1835041505, now seen corresponding path program 71 times [2018-10-01 00:29:48,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:48,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:48,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:48,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:48,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 2664 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:48,862 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:48,862 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:29:48,869 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:29:48,989 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-01 00:29:48,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:48,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 2664 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:49,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:49,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:29:49,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:29:49,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:29:49,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:49,301 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 76 states. [2018-10-01 00:29:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:55,453 INFO L93 Difference]: Finished difference Result 346 states and 350 transitions. [2018-10-01 00:29:55,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:29:55,453 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 187 [2018-10-01 00:29:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:55,454 INFO L225 Difference]: With dead ends: 346 [2018-10-01 00:29:55,454 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:29:55,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:29:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:29:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 00:29:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:29:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-01 00:29:55,477 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 187 [2018-10-01 00:29:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:55,477 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-01 00:29:55,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:29:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-01 00:29:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:29:55,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:55,479 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1, 1] [2018-10-01 00:29:55,479 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:55,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:55,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1521017350, now seen corresponding path program 72 times [2018-10-01 00:29:55,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:55,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:55,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:55,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:55,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 775 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:55,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:55,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:29:55,834 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:29:55,960 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:29:55,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:29:55,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 775 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:56,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:56,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:29:56,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:29:56,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:29:56,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:56,294 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 40 states. [2018-10-01 00:29:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:29:56,951 INFO L93 Difference]: Finished difference Result 205 states and 208 transitions. [2018-10-01 00:29:56,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:29:56,951 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 188 [2018-10-01 00:29:56,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:29:56,952 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:29:56,952 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:29:56,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:29:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:29:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2018-10-01 00:29:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:29:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-01 00:29:56,975 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 188 [2018-10-01 00:29:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:29:56,975 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-01 00:29:56,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:29:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-01 00:29:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:29:56,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:29:56,977 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 1, 1, 1, 1, 1] [2018-10-01 00:29:56,977 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:29:56,977 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:29:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1787388540, now seen corresponding path program 73 times [2018-10-01 00:29:56,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:29:56,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:29:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:56,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:29:56,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:29:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 2812 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:57,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:29:57,666 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 [2018-10-01 00:29:57,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:29:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:29:57,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:29:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3515 backedges. 2812 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:29:58,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:29:58,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:29:58,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:29:58,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:29:58,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:29:58,098 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 78 states. [2018-10-01 00:30:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:03,871 INFO L93 Difference]: Finished difference Result 355 states and 359 transitions. [2018-10-01 00:30:03,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:30:03,871 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 192 [2018-10-01 00:30:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:03,872 INFO L225 Difference]: With dead ends: 355 [2018-10-01 00:30:03,872 INFO L226 Difference]: Without dead ends: 196 [2018-10-01 00:30:03,872 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:30:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-01 00:30:03,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-01 00:30:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-01 00:30:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 198 transitions. [2018-10-01 00:30:03,890 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 198 transitions. Word has length 192 [2018-10-01 00:30:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:03,891 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 198 transitions. [2018-10-01 00:30:03,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:30:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 198 transitions. [2018-10-01 00:30:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-01 00:30:03,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:03,892 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1, 1] [2018-10-01 00:30:03,892 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:03,892 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1861088757, now seen corresponding path program 74 times [2018-10-01 00:30:03,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:03,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:03,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:03,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:03,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 815 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:04,298 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:04,298 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:30:04,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:04,391 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:04,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:04,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 815 proven. 2738 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:04,712 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:04,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 00:30:04,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:30:04,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:30:04,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:04,713 INFO L87 Difference]: Start difference. First operand 196 states and 198 transitions. Second operand 41 states. [2018-10-01 00:30:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:05,522 INFO L93 Difference]: Finished difference Result 210 states and 213 transitions. [2018-10-01 00:30:05,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:30:05,523 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 193 [2018-10-01 00:30:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:05,523 INFO L225 Difference]: With dead ends: 210 [2018-10-01 00:30:05,524 INFO L226 Difference]: Without dead ends: 204 [2018-10-01 00:30:05,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:30:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-01 00:30:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2018-10-01 00:30:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-01 00:30:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 202 transitions. [2018-10-01 00:30:05,542 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 202 transitions. Word has length 193 [2018-10-01 00:30:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:05,542 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 202 transitions. [2018-10-01 00:30:05,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:30:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 202 transitions. [2018-10-01 00:30:05,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-01 00:30:05,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:05,543 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 1, 1, 1, 1, 1] [2018-10-01 00:30:05,543 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:05,543 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:05,544 INFO L82 PathProgramCache]: Analyzing trace with hash -315300117, now seen corresponding path program 75 times [2018-10-01 00:30:05,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:05,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:05,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:05,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:05,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2964 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:06,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:06,312 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 [2018-10-01 00:30:06,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:06,471 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-01 00:30:06,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:06,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3705 backedges. 2964 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:06,821 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:06,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:30:06,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:30:06,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:30:06,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:06,822 INFO L87 Difference]: Start difference. First operand 200 states and 202 transitions. Second operand 80 states. [2018-10-01 00:30:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:13,236 INFO L93 Difference]: Finished difference Result 364 states and 368 transitions. [2018-10-01 00:30:13,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:30:13,237 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 197 [2018-10-01 00:30:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:13,238 INFO L225 Difference]: With dead ends: 364 [2018-10-01 00:30:13,238 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:30:13,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:30:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:30:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:30:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:30:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-01 00:30:13,262 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 197 [2018-10-01 00:30:13,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:13,263 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-01 00:30:13,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:30:13,263 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-01 00:30:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:30:13,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:13,264 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1, 1] [2018-10-01 00:30:13,264 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:13,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1372678382, now seen corresponding path program 76 times [2018-10-01 00:30:13,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:13,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:13,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:13,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:13,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 856 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:13,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:13,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:30:13,642 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:13,735 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:13,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:13,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 856 proven. 2888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:14,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:14,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:30:14,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:30:14,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:30:14,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:14,069 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 42 states. [2018-10-01 00:30:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:14,913 INFO L93 Difference]: Finished difference Result 215 states and 218 transitions. [2018-10-01 00:30:14,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:30:14,921 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 198 [2018-10-01 00:30:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:14,922 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:30:14,922 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:30:14,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:30:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:30:14,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 205. [2018-10-01 00:30:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:30:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-01 00:30:14,947 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 198 [2018-10-01 00:30:14,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:14,947 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-01 00:30:14,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:30:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-01 00:30:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:30:14,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:14,948 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 1, 1, 1, 1, 1] [2018-10-01 00:30:14,949 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:14,949 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1792389512, now seen corresponding path program 77 times [2018-10-01 00:30:14,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:14,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:14,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:14,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:14,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 3120 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:15,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:15,871 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 [2018-10-01 00:30:15,879 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:16,012 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-01 00:30:16,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:16,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3900 backedges. 3120 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:16,346 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:16,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:30:16,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:30:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:30:16,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:16,347 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 82 states. [2018-10-01 00:30:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:23,108 INFO L93 Difference]: Finished difference Result 373 states and 377 transitions. [2018-10-01 00:30:23,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:30:23,109 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 202 [2018-10-01 00:30:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:23,109 INFO L225 Difference]: With dead ends: 373 [2018-10-01 00:30:23,110 INFO L226 Difference]: Without dead ends: 206 [2018-10-01 00:30:23,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:30:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-01 00:30:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2018-10-01 00:30:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-10-01 00:30:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 208 transitions. [2018-10-01 00:30:23,129 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 208 transitions. Word has length 202 [2018-10-01 00:30:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:23,129 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 208 transitions. [2018-10-01 00:30:23,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:30:23,129 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 208 transitions. [2018-10-01 00:30:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-01 00:30:23,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:23,130 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1, 1] [2018-10-01 00:30:23,130 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:23,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:23,131 INFO L82 PathProgramCache]: Analyzing trace with hash -185138751, now seen corresponding path program 78 times [2018-10-01 00:30:23,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:23,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:23,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:23,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:23,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 898 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:23,672 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:23,672 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 [2018-10-01 00:30:23,679 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:23,815 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-01 00:30:23,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:23,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 898 proven. 3042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:24,171 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:24,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 00:30:24,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:30:24,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:30:24,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:24,172 INFO L87 Difference]: Start difference. First operand 206 states and 208 transitions. Second operand 43 states. [2018-10-01 00:30:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:25,018 INFO L93 Difference]: Finished difference Result 220 states and 223 transitions. [2018-10-01 00:30:25,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:30:25,024 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 203 [2018-10-01 00:30:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:25,025 INFO L225 Difference]: With dead ends: 220 [2018-10-01 00:30:25,025 INFO L226 Difference]: Without dead ends: 214 [2018-10-01 00:30:25,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:30:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-10-01 00:30:25,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2018-10-01 00:30:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-01 00:30:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 212 transitions. [2018-10-01 00:30:25,051 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 212 transitions. Word has length 203 [2018-10-01 00:30:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:25,051 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 212 transitions. [2018-10-01 00:30:25,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:30:25,052 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 212 transitions. [2018-10-01 00:30:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-01 00:30:25,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:25,053 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 1, 1, 1, 1, 1] [2018-10-01 00:30:25,053 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:25,053 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:25,053 INFO L82 PathProgramCache]: Analyzing trace with hash -319083337, now seen corresponding path program 79 times [2018-10-01 00:30:25,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:25,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:25,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:25,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:25,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 3280 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:25,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:25,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:30:25,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:26,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4100 backedges. 3280 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:26,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:26,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:30:26,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:30:26,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:30:26,516 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:26,516 INFO L87 Difference]: Start difference. First operand 210 states and 212 transitions. Second operand 84 states. [2018-10-01 00:30:33,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:33,263 INFO L93 Difference]: Finished difference Result 382 states and 386 transitions. [2018-10-01 00:30:33,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:30:33,263 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 207 [2018-10-01 00:30:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:33,264 INFO L225 Difference]: With dead ends: 382 [2018-10-01 00:30:33,264 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:30:33,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:30:33,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:30:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 00:30:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:30:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-01 00:30:33,283 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 207 [2018-10-01 00:30:33,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:33,283 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-01 00:30:33,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:30:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-01 00:30:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:30:33,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:33,284 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1, 1] [2018-10-01 00:30:33,284 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:33,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:33,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1953503262, now seen corresponding path program 80 times [2018-10-01 00:30:33,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:33,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:33,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:33,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:33,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 941 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:33,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:33,680 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 [2018-10-01 00:30:33,687 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:30:33,779 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:30:33,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:33,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 941 proven. 3200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:34,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:34,132 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:30:34,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:30:34,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:30:34,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:34,133 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 44 states. [2018-10-01 00:30:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:34,860 INFO L93 Difference]: Finished difference Result 225 states and 228 transitions. [2018-10-01 00:30:34,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:30:34,861 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 208 [2018-10-01 00:30:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:34,862 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:30:34,862 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:30:34,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:30:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:30:34,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2018-10-01 00:30:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:30:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-01 00:30:34,881 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 208 [2018-10-01 00:30:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:34,882 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-01 00:30:34,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:30:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-01 00:30:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:30:34,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:34,883 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 1, 1, 1, 1, 1] [2018-10-01 00:30:34,883 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:34,883 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1125633172, now seen corresponding path program 81 times [2018-10-01 00:30:34,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:34,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:34,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:34,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:34,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 3444 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:35,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:35,621 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 [2018-10-01 00:30:35,627 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:30:35,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-01 00:30:35,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:35,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 3444 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:36,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:36,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:30:36,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:30:36,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:30:36,331 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:36,331 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 86 states. [2018-10-01 00:30:40,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:40,372 INFO L93 Difference]: Finished difference Result 391 states and 395 transitions. [2018-10-01 00:30:40,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:30:40,372 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 212 [2018-10-01 00:30:40,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:40,373 INFO L225 Difference]: With dead ends: 391 [2018-10-01 00:30:40,373 INFO L226 Difference]: Without dead ends: 216 [2018-10-01 00:30:40,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:30:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-01 00:30:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-10-01 00:30:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-01 00:30:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2018-10-01 00:30:40,394 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 212 [2018-10-01 00:30:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:40,394 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2018-10-01 00:30:40,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:30:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2018-10-01 00:30:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-01 00:30:40,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:40,396 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 1, 1, 1, 1, 1] [2018-10-01 00:30:40,396 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:40,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:40,396 INFO L82 PathProgramCache]: Analyzing trace with hash -155129459, now seen corresponding path program 82 times [2018-10-01 00:30:40,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:40,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:40,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:40,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:40,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 985 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:40,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:40,817 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 [2018-10-01 00:30:40,825 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:30:40,926 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:30:40,926 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:40,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 985 proven. 3362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:41,464 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:41,464 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 00:30:41,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:30:41,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:30:41,465 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:41,465 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand 45 states. [2018-10-01 00:30:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:42,206 INFO L93 Difference]: Finished difference Result 230 states and 233 transitions. [2018-10-01 00:30:42,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:30:42,206 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 213 [2018-10-01 00:30:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:42,207 INFO L225 Difference]: With dead ends: 230 [2018-10-01 00:30:42,207 INFO L226 Difference]: Without dead ends: 224 [2018-10-01 00:30:42,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:30:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-10-01 00:30:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2018-10-01 00:30:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-10-01 00:30:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 222 transitions. [2018-10-01 00:30:42,229 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 222 transitions. Word has length 213 [2018-10-01 00:30:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:42,229 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 222 transitions. [2018-10-01 00:30:42,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:30:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 222 transitions. [2018-10-01 00:30:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-01 00:30:42,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:42,231 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 1, 1, 1, 1, 1] [2018-10-01 00:30:42,231 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:42,231 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1531687293, now seen corresponding path program 83 times [2018-10-01 00:30:42,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:42,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:42,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:42,232 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:42,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4515 backedges. 3612 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:43,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:43,054 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 [2018-10-01 00:30:43,062 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:30:43,210 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-01 00:30:43,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:43,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4515 backedges. 3612 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:43,573 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:43,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:30:43,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:30:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:30:43,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:43,574 INFO L87 Difference]: Start difference. First operand 220 states and 222 transitions. Second operand 88 states. [2018-10-01 00:30:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:50,981 INFO L93 Difference]: Finished difference Result 400 states and 404 transitions. [2018-10-01 00:30:50,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:30:50,981 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 217 [2018-10-01 00:30:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:50,982 INFO L225 Difference]: With dead ends: 400 [2018-10-01 00:30:50,982 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:30:50,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:30:50,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:30:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:30:51,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:30:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-01 00:30:51,002 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 217 [2018-10-01 00:30:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:51,003 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-01 00:30:51,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:30:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-01 00:30:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:30:51,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:51,004 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 1, 1, 1, 1, 1] [2018-10-01 00:30:51,004 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:51,004 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1128490282, now seen corresponding path program 84 times [2018-10-01 00:30:51,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:51,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:51,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:51,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:51,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 1030 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:51,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:51,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:30:51,673 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:30:51,823 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:30:51,823 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:30:51,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 1030 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:52,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:52,187 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:30:52,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:30:52,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:30:52,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:52,188 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 46 states. [2018-10-01 00:30:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:30:53,150 INFO L93 Difference]: Finished difference Result 235 states and 238 transitions. [2018-10-01 00:30:53,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:30:53,151 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 218 [2018-10-01 00:30:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:30:53,152 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:30:53,152 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:30:53,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:30:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:30:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2018-10-01 00:30:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:30:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-01 00:30:53,173 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 218 [2018-10-01 00:30:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:30:53,173 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-01 00:30:53,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:30:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-01 00:30:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:30:53,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:30:53,174 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 1, 1, 1, 1, 1] [2018-10-01 00:30:53,174 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:30:53,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:30:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1373260896, now seen corresponding path program 85 times [2018-10-01 00:30:53,175 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:30:53,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:30:53,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:53,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:30:53,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:30:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4730 backedges. 3784 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:53,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:30:53,962 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:30:53,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:30:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:30:54,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:30:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4730 backedges. 3784 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:30:54,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:30:54,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:30:54,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:30:54,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:30:54,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:30:54,461 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 90 states. [2018-10-01 00:31:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:02,215 INFO L93 Difference]: Finished difference Result 409 states and 413 transitions. [2018-10-01 00:31:02,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:31:02,215 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 222 [2018-10-01 00:31:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:02,216 INFO L225 Difference]: With dead ends: 409 [2018-10-01 00:31:02,216 INFO L226 Difference]: Without dead ends: 226 [2018-10-01 00:31:02,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:31:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-01 00:31:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2018-10-01 00:31:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-10-01 00:31:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 228 transitions. [2018-10-01 00:31:02,235 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 228 transitions. Word has length 222 [2018-10-01 00:31:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:02,235 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 228 transitions. [2018-10-01 00:31:02,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:31:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 228 transitions. [2018-10-01 00:31:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-01 00:31:02,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:02,236 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 1, 1, 1, 1, 1] [2018-10-01 00:31:02,236 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:02,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2022550873, now seen corresponding path program 86 times [2018-10-01 00:31:02,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:02,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:02,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:02,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:02,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1076 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:02,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:02,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:31:02,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:02,787 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:02,787 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:02,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 1076 proven. 3698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:03,161 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:03,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 00:31:03,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:31:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:31:03,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:03,162 INFO L87 Difference]: Start difference. First operand 226 states and 228 transitions. Second operand 47 states. [2018-10-01 00:31:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:04,174 INFO L93 Difference]: Finished difference Result 240 states and 243 transitions. [2018-10-01 00:31:04,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:31:04,174 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 223 [2018-10-01 00:31:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:04,175 INFO L225 Difference]: With dead ends: 240 [2018-10-01 00:31:04,175 INFO L226 Difference]: Without dead ends: 234 [2018-10-01 00:31:04,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:31:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-01 00:31:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2018-10-01 00:31:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-10-01 00:31:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 232 transitions. [2018-10-01 00:31:04,197 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 232 transitions. Word has length 223 [2018-10-01 00:31:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:04,197 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 232 transitions. [2018-10-01 00:31:04,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:31:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 232 transitions. [2018-10-01 00:31:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-01 00:31:04,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:04,198 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 1, 1, 1, 1, 1] [2018-10-01 00:31:04,198 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:04,198 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash 664947791, now seen corresponding path program 87 times [2018-10-01 00:31:04,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:04,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:04,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:04,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:04,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 3960 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:04,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:04,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:31:04,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:05,182 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-01 00:31:05,183 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:05,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 3960 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:05,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:05,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:31:05,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:31:05,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:31:05,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:05,590 INFO L87 Difference]: Start difference. First operand 230 states and 232 transitions. Second operand 92 states. [2018-10-01 00:31:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:13,950 INFO L93 Difference]: Finished difference Result 418 states and 422 transitions. [2018-10-01 00:31:13,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:31:13,950 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 227 [2018-10-01 00:31:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:13,951 INFO L225 Difference]: With dead ends: 418 [2018-10-01 00:31:13,951 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:31:13,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:31:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:31:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 00:31:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:31:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-10-01 00:31:13,973 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 227 [2018-10-01 00:31:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:13,973 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-10-01 00:31:13,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:31:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-10-01 00:31:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:31:13,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:13,974 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 1, 1, 1, 1, 1] [2018-10-01 00:31:13,974 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:13,974 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:13,975 INFO L82 PathProgramCache]: Analyzing trace with hash -402751946, now seen corresponding path program 88 times [2018-10-01 00:31:13,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:13,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:13,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:13,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:13,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 1123 proven. 3872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:14,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:14,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:31:14,530 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:14,637 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:14,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:14,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 1123 proven. 3872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:15,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:15,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:31:15,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:31:15,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:31:15,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:15,030 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 48 states. [2018-10-01 00:31:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:15,901 INFO L93 Difference]: Finished difference Result 245 states and 248 transitions. [2018-10-01 00:31:15,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:31:15,907 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 228 [2018-10-01 00:31:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:15,909 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:31:15,909 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:31:15,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:31:15,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:31:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 235. [2018-10-01 00:31:15,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:31:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-01 00:31:15,934 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 228 [2018-10-01 00:31:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:15,934 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-01 00:31:15,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:31:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-01 00:31:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:31:15,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:15,935 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 1, 1, 1, 1, 1] [2018-10-01 00:31:15,935 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:15,935 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:15,936 INFO L82 PathProgramCache]: Analyzing trace with hash -564828500, now seen corresponding path program 89 times [2018-10-01 00:31:15,936 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:15,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:15,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:15,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:15,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5175 backedges. 4140 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:16,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:16,794 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 [2018-10-01 00:31:16,802 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:16,966 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-01 00:31:16,967 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:16,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5175 backedges. 4140 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:17,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:17,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:31:17,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:31:17,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:31:17,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:17,487 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 94 states. [2018-10-01 00:31:25,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:25,743 INFO L93 Difference]: Finished difference Result 427 states and 431 transitions. [2018-10-01 00:31:25,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:31:25,743 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 232 [2018-10-01 00:31:25,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:25,744 INFO L225 Difference]: With dead ends: 427 [2018-10-01 00:31:25,744 INFO L226 Difference]: Without dead ends: 236 [2018-10-01 00:31:25,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:31:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-01 00:31:25,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-01 00:31:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-01 00:31:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 238 transitions. [2018-10-01 00:31:25,773 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 238 transitions. Word has length 232 [2018-10-01 00:31:25,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:25,774 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 238 transitions. [2018-10-01 00:31:25,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:31:25,774 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 238 transitions. [2018-10-01 00:31:25,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-01 00:31:25,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:25,775 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 1, 1, 1, 1, 1] [2018-10-01 00:31:25,775 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:25,775 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash 522145061, now seen corresponding path program 90 times [2018-10-01 00:31:25,775 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:25,775 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:25,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:25,776 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:25,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 1171 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:26,236 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:26,236 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 [2018-10-01 00:31:26,244 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:31:26,403 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-01 00:31:26,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:26,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 1171 proven. 4050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:26,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:26,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 00:31:26,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:31:26,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:31:26,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:26,798 INFO L87 Difference]: Start difference. First operand 236 states and 238 transitions. Second operand 49 states. [2018-10-01 00:31:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:27,855 INFO L93 Difference]: Finished difference Result 250 states and 253 transitions. [2018-10-01 00:31:27,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:31:27,855 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 233 [2018-10-01 00:31:27,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:27,856 INFO L225 Difference]: With dead ends: 250 [2018-10-01 00:31:27,856 INFO L226 Difference]: Without dead ends: 244 [2018-10-01 00:31:27,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:31:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-10-01 00:31:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2018-10-01 00:31:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-01 00:31:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 242 transitions. [2018-10-01 00:31:27,879 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 242 transitions. Word has length 233 [2018-10-01 00:31:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:27,879 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 242 transitions. [2018-10-01 00:31:27,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:31:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 242 transitions. [2018-10-01 00:31:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-01 00:31:27,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:27,880 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1] [2018-10-01 00:31:27,881 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:27,881 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:27,881 INFO L82 PathProgramCache]: Analyzing trace with hash -377018853, now seen corresponding path program 91 times [2018-10-01 00:31:27,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:27,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:27,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:27,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:27,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 4324 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:28,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:28,754 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 [2018-10-01 00:31:28,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:28,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5405 backedges. 4324 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:29,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:29,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:31:29,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:31:29,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:31:29,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:29,329 INFO L87 Difference]: Start difference. First operand 240 states and 242 transitions. Second operand 96 states. [2018-10-01 00:31:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:36,103 INFO L93 Difference]: Finished difference Result 436 states and 440 transitions. [2018-10-01 00:31:36,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:31:36,103 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 237 [2018-10-01 00:31:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:36,104 INFO L225 Difference]: With dead ends: 436 [2018-10-01 00:31:36,104 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:31:36,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:31:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:31:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:31:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:31:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-10-01 00:31:36,128 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 237 [2018-10-01 00:31:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:36,128 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-10-01 00:31:36,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:31:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-10-01 00:31:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:31:36,129 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:36,129 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2018-10-01 00:31:36,129 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:36,129 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:36,129 INFO L82 PathProgramCache]: Analyzing trace with hash 125264706, now seen corresponding path program 92 times [2018-10-01 00:31:36,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:36,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:36,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:36,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:36,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 1220 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:36,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:36,608 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 [2018-10-01 00:31:36,615 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:31:36,719 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:31:36,719 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:36,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 1220 proven. 4232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:37,113 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:37,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:31:37,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:31:37,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:31:37,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:37,114 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 50 states. [2018-10-01 00:31:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:38,455 INFO L93 Difference]: Finished difference Result 255 states and 258 transitions. [2018-10-01 00:31:38,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:31:38,455 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 238 [2018-10-01 00:31:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:38,456 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:31:38,456 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:31:38,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:31:38,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:31:38,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2018-10-01 00:31:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:31:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-10-01 00:31:38,489 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 238 [2018-10-01 00:31:38,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:38,490 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-10-01 00:31:38,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:31:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-10-01 00:31:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:31:38,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:38,491 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 1, 1, 1, 1, 1] [2018-10-01 00:31:38,491 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:38,491 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash 494724536, now seen corresponding path program 93 times [2018-10-01 00:31:38,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:38,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:38,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:38,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:38,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 5640 backedges. 4512 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:39,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:39,351 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 [2018-10-01 00:31:39,358 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:31:39,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-01 00:31:39,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:39,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5640 backedges. 4512 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:39,987 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:39,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:31:39,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:31:39,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:31:39,988 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:39,989 INFO L87 Difference]: Start difference. First operand 245 states and 247 transitions. Second operand 98 states. [2018-10-01 00:31:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:48,129 INFO L93 Difference]: Finished difference Result 445 states and 449 transitions. [2018-10-01 00:31:48,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:31:48,129 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 242 [2018-10-01 00:31:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:48,130 INFO L225 Difference]: With dead ends: 445 [2018-10-01 00:31:48,130 INFO L226 Difference]: Without dead ends: 246 [2018-10-01 00:31:48,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:31:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-10-01 00:31:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2018-10-01 00:31:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-01 00:31:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 248 transitions. [2018-10-01 00:31:48,154 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 248 transitions. Word has length 242 [2018-10-01 00:31:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:48,154 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 248 transitions. [2018-10-01 00:31:48,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:31:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 248 transitions. [2018-10-01 00:31:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-01 00:31:48,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:48,156 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 1, 1, 1, 1, 1] [2018-10-01 00:31:48,156 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:48,156 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:48,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1883780879, now seen corresponding path program 94 times [2018-10-01 00:31:48,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:48,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:48,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:48,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:48,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 1270 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:48,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:48,623 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 [2018-10-01 00:31:48,631 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:31:48,746 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:31:48,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:48,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 1270 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:49,180 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:49,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 00:31:49,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:31:49,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:31:49,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:49,181 INFO L87 Difference]: Start difference. First operand 246 states and 248 transitions. Second operand 51 states. [2018-10-01 00:31:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:50,037 INFO L93 Difference]: Finished difference Result 260 states and 263 transitions. [2018-10-01 00:31:50,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:31:50,038 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 243 [2018-10-01 00:31:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:50,039 INFO L225 Difference]: With dead ends: 260 [2018-10-01 00:31:50,039 INFO L226 Difference]: Without dead ends: 254 [2018-10-01 00:31:50,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:31:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-01 00:31:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2018-10-01 00:31:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-10-01 00:31:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 252 transitions. [2018-10-01 00:31:50,063 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 252 transitions. Word has length 243 [2018-10-01 00:31:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:50,063 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 252 transitions. [2018-10-01 00:31:50,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:31:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 252 transitions. [2018-10-01 00:31:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-01 00:31:50,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:50,064 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 1, 1, 1, 1, 1] [2018-10-01 00:31:50,064 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:50,064 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash 514120679, now seen corresponding path program 95 times [2018-10-01 00:31:50,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:50,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:50,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:50,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:50,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 4704 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:50,944 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:50,945 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 [2018-10-01 00:31:50,952 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:31:51,122 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-01 00:31:51,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:51,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 4704 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:51,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:51,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:31:51,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:31:51,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:31:51,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:51,534 INFO L87 Difference]: Start difference. First operand 250 states and 252 transitions. Second operand 100 states. [2018-10-01 00:31:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:56,593 INFO L93 Difference]: Finished difference Result 454 states and 458 transitions. [2018-10-01 00:31:56,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:31:56,593 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 247 [2018-10-01 00:31:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:56,594 INFO L225 Difference]: With dead ends: 454 [2018-10-01 00:31:56,594 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:31:56,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:31:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:31:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 00:31:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:31:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 253 transitions. [2018-10-01 00:31:56,625 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 253 transitions. Word has length 247 [2018-10-01 00:31:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:56,625 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 253 transitions. [2018-10-01 00:31:56,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:31:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 253 transitions. [2018-10-01 00:31:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:31:56,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:56,626 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 1, 1, 1, 1, 1] [2018-10-01 00:31:56,626 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:56,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1107028914, now seen corresponding path program 96 times [2018-10-01 00:31:56,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:56,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:56,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:56,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:56,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 1321 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:57,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:57,128 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 [2018-10-01 00:31:57,137 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:31:57,319 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:31:57,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:31:57,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:31:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 1321 proven. 4608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:57,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:31:57,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:31:57,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:31:57,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:31:57,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:31:57,742 INFO L87 Difference]: Start difference. First operand 251 states and 253 transitions. Second operand 52 states. [2018-10-01 00:31:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:31:58,743 INFO L93 Difference]: Finished difference Result 265 states and 268 transitions. [2018-10-01 00:31:58,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:31:58,743 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 248 [2018-10-01 00:31:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:31:58,744 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:31:58,744 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 00:31:58,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:31:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 00:31:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2018-10-01 00:31:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:31:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 257 transitions. [2018-10-01 00:31:58,780 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 257 transitions. Word has length 248 [2018-10-01 00:31:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:31:58,780 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 257 transitions. [2018-10-01 00:31:58,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:31:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 257 transitions. [2018-10-01 00:31:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:31:58,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:31:58,781 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 1, 1, 1, 1, 1] [2018-10-01 00:31:58,782 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:31:58,782 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:31:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1827811524, now seen corresponding path program 97 times [2018-10-01 00:31:58,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:31:58,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:31:58,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:58,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:31:58,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:31:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 4900 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:31:59,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:31:59,715 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 [2018-10-01 00:31:59,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:31:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:31:59,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 4900 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:00,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:00,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:32:00,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:32:00,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:32:00,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:00,277 INFO L87 Difference]: Start difference. First operand 255 states and 257 transitions. Second operand 102 states. [2018-10-01 00:32:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:10,463 INFO L93 Difference]: Finished difference Result 463 states and 467 transitions. [2018-10-01 00:32:10,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:32:10,463 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 252 [2018-10-01 00:32:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:10,464 INFO L225 Difference]: With dead ends: 463 [2018-10-01 00:32:10,464 INFO L226 Difference]: Without dead ends: 256 [2018-10-01 00:32:10,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:32:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2018-10-01 00:32:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2018-10-01 00:32:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-10-01 00:32:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 258 transitions. [2018-10-01 00:32:10,493 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 258 transitions. Word has length 252 [2018-10-01 00:32:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:10,493 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 258 transitions. [2018-10-01 00:32:10,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:32:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 258 transitions. [2018-10-01 00:32:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-01 00:32:10,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:10,494 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 1, 1, 1, 1, 1] [2018-10-01 00:32:10,494 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:10,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:10,495 INFO L82 PathProgramCache]: Analyzing trace with hash -803659587, now seen corresponding path program 98 times [2018-10-01 00:32:10,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:10,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:10,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:10,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:10,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 1373 proven. 4802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:11,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:11,090 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 [2018-10-01 00:32:11,098 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:11,212 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:11,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:11,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6175 backedges. 1373 proven. 4802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:11,645 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:11,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 00:32:11,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:32:11,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:32:11,646 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:11,646 INFO L87 Difference]: Start difference. First operand 256 states and 258 transitions. Second operand 53 states. [2018-10-01 00:32:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:12,545 INFO L93 Difference]: Finished difference Result 270 states and 273 transitions. [2018-10-01 00:32:12,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:32:12,545 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 253 [2018-10-01 00:32:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:12,546 INFO L225 Difference]: With dead ends: 270 [2018-10-01 00:32:12,546 INFO L226 Difference]: Without dead ends: 264 [2018-10-01 00:32:12,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:32:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-10-01 00:32:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2018-10-01 00:32:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-10-01 00:32:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 262 transitions. [2018-10-01 00:32:12,589 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 262 transitions. Word has length 253 [2018-10-01 00:32:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:12,589 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 262 transitions. [2018-10-01 00:32:12,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:32:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 262 transitions. [2018-10-01 00:32:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-01 00:32:12,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:12,590 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 1, 1, 1, 1, 1] [2018-10-01 00:32:12,590 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:12,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:12,591 INFO L82 PathProgramCache]: Analyzing trace with hash 465399219, now seen corresponding path program 99 times [2018-10-01 00:32:12,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:12,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:12,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:12,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:12,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6375 backedges. 5100 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:13,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:13,763 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 [2018-10-01 00:32:13,770 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:13,987 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-01 00:32:13,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:13,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6375 backedges. 5100 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:14,430 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:14,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:32:14,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:32:14,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:32:14,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:14,432 INFO L87 Difference]: Start difference. First operand 260 states and 262 transitions. Second operand 104 states. [2018-10-01 00:32:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:17,340 INFO L93 Difference]: Finished difference Result 472 states and 476 transitions. [2018-10-01 00:32:17,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:32:17,340 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 257 [2018-10-01 00:32:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:17,341 INFO L225 Difference]: With dead ends: 472 [2018-10-01 00:32:17,341 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 00:32:17,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:32:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 00:32:17,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 00:32:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 00:32:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 263 transitions. [2018-10-01 00:32:17,368 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 263 transitions. Word has length 257 [2018-10-01 00:32:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:17,368 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 263 transitions. [2018-10-01 00:32:17,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:32:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 263 transitions. [2018-10-01 00:32:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:32:17,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:17,370 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 1, 1, 1, 1, 1] [2018-10-01 00:32:17,370 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:17,370 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:17,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1064997210, now seen corresponding path program 100 times [2018-10-01 00:32:17,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:17,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:17,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:17,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:17,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 1426 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:17,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:17,925 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 [2018-10-01 00:32:17,945 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:32:18,066 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:32:18,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:18,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6426 backedges. 1426 proven. 5000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:18,859 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:18,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:32:18,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:32:18,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:32:18,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:18,861 INFO L87 Difference]: Start difference. First operand 261 states and 263 transitions. Second operand 54 states. [2018-10-01 00:32:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:19,784 INFO L93 Difference]: Finished difference Result 275 states and 278 transitions. [2018-10-01 00:32:19,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:32:19,784 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 258 [2018-10-01 00:32:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:19,785 INFO L225 Difference]: With dead ends: 275 [2018-10-01 00:32:19,785 INFO L226 Difference]: Without dead ends: 269 [2018-10-01 00:32:19,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:32:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-01 00:32:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2018-10-01 00:32:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 00:32:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 267 transitions. [2018-10-01 00:32:19,814 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 267 transitions. Word has length 258 [2018-10-01 00:32:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:19,814 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 267 transitions. [2018-10-01 00:32:19,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:32:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 267 transitions. [2018-10-01 00:32:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 00:32:19,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:19,815 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 1, 1, 1, 1, 1] [2018-10-01 00:32:19,815 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:19,816 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash 629884880, now seen corresponding path program 101 times [2018-10-01 00:32:19,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:19,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:19,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:19,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:19,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6630 backedges. 5304 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:20,776 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:20,776 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 [2018-10-01 00:32:20,783 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:32:21,100 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-01 00:32:21,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:21,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6630 backedges. 5304 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:21,739 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:21,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:32:21,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:32:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:32:21,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:21,740 INFO L87 Difference]: Start difference. First operand 265 states and 267 transitions. Second operand 106 states. [2018-10-01 00:32:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:32,520 INFO L93 Difference]: Finished difference Result 481 states and 485 transitions. [2018-10-01 00:32:32,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:32:32,520 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 262 [2018-10-01 00:32:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:32,521 INFO L225 Difference]: With dead ends: 481 [2018-10-01 00:32:32,521 INFO L226 Difference]: Without dead ends: 266 [2018-10-01 00:32:32,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:32:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-10-01 00:32:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2018-10-01 00:32:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-10-01 00:32:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 268 transitions. [2018-10-01 00:32:32,555 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 268 transitions. Word has length 262 [2018-10-01 00:32:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:32,555 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 268 transitions. [2018-10-01 00:32:32,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:32:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 268 transitions. [2018-10-01 00:32:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-01 00:32:32,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:32,556 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 1, 1, 1, 1, 1] [2018-10-01 00:32:32,556 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:32,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:32,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1501211511, now seen corresponding path program 102 times [2018-10-01 00:32:32,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:32,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:32,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:32,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:32,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 1480 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:33,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:33,115 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 [2018-10-01 00:32:33,121 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:32:33,319 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-01 00:32:33,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:33,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:34,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6682 backedges. 1480 proven. 5202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:34,045 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:34,045 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 00:32:34,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:32:34,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:32:34,046 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:34,046 INFO L87 Difference]: Start difference. First operand 266 states and 268 transitions. Second operand 55 states. [2018-10-01 00:32:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:34,994 INFO L93 Difference]: Finished difference Result 280 states and 283 transitions. [2018-10-01 00:32:34,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:32:34,995 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 263 [2018-10-01 00:32:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:34,995 INFO L225 Difference]: With dead ends: 280 [2018-10-01 00:32:34,995 INFO L226 Difference]: Without dead ends: 274 [2018-10-01 00:32:34,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:32:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-10-01 00:32:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2018-10-01 00:32:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-10-01 00:32:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 272 transitions. [2018-10-01 00:32:35,027 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 272 transitions. Word has length 263 [2018-10-01 00:32:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:35,027 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 272 transitions. [2018-10-01 00:32:35,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:32:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 272 transitions. [2018-10-01 00:32:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-01 00:32:35,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:35,028 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2018-10-01 00:32:35,028 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:35,028 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:35,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1240278145, now seen corresponding path program 103 times [2018-10-01 00:32:35,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:35,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:35,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:35,029 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:35,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6890 backedges. 5512 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:36,036 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:36,037 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 [2018-10-01 00:32:36,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:36,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6890 backedges. 5512 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:36,642 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:36,642 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:32:36,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:32:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:32:36,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:36,643 INFO L87 Difference]: Start difference. First operand 270 states and 272 transitions. Second operand 108 states. [2018-10-01 00:32:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:47,352 INFO L93 Difference]: Finished difference Result 490 states and 494 transitions. [2018-10-01 00:32:47,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:32:47,352 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 267 [2018-10-01 00:32:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:47,353 INFO L225 Difference]: With dead ends: 490 [2018-10-01 00:32:47,353 INFO L226 Difference]: Without dead ends: 271 [2018-10-01 00:32:47,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:32:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-01 00:32:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-01 00:32:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-01 00:32:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 273 transitions. [2018-10-01 00:32:47,381 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 273 transitions. Word has length 267 [2018-10-01 00:32:47,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:47,381 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 273 transitions. [2018-10-01 00:32:47,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:32:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 273 transitions. [2018-10-01 00:32:47,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-01 00:32:47,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:47,382 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 1, 1, 1, 1, 1] [2018-10-01 00:32:47,382 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:47,382 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:47,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1999690342, now seen corresponding path program 104 times [2018-10-01 00:32:47,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:47,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:47,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:47,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:32:47,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 1535 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:47,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:47,959 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 [2018-10-01 00:32:47,966 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:32:48,085 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:32:48,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:48,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6943 backedges. 1535 proven. 5408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:48,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:48,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:32:48,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:32:48,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:32:48,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:48,546 INFO L87 Difference]: Start difference. First operand 271 states and 273 transitions. Second operand 56 states. [2018-10-01 00:32:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:32:49,908 INFO L93 Difference]: Finished difference Result 285 states and 288 transitions. [2018-10-01 00:32:49,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:32:49,908 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 268 [2018-10-01 00:32:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:32:49,909 INFO L225 Difference]: With dead ends: 285 [2018-10-01 00:32:49,909 INFO L226 Difference]: Without dead ends: 279 [2018-10-01 00:32:49,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:32:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-01 00:32:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2018-10-01 00:32:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-01 00:32:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 277 transitions. [2018-10-01 00:32:49,936 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 277 transitions. Word has length 268 [2018-10-01 00:32:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:32:49,936 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 277 transitions. [2018-10-01 00:32:49,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:32:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 277 transitions. [2018-10-01 00:32:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-01 00:32:49,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:32:49,937 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 1, 1, 1, 1, 1] [2018-10-01 00:32:49,937 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:32:49,937 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:32:49,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1751242020, now seen corresponding path program 105 times [2018-10-01 00:32:49,938 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:32:49,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:32:49,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:49,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:32:49,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:32:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:32:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 5724 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:50,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:32:50,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:32:50,999 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:32:51,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-01 00:32:51,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:32:51,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:32:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 5724 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:32:51,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:32:51,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:32:51,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:32:51,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:32:51,701 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:32:51,701 INFO L87 Difference]: Start difference. First operand 275 states and 277 transitions. Second operand 110 states. [2018-10-01 00:33:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:02,942 INFO L93 Difference]: Finished difference Result 499 states and 503 transitions. [2018-10-01 00:33:02,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:33:02,942 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 272 [2018-10-01 00:33:02,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:02,943 INFO L225 Difference]: With dead ends: 499 [2018-10-01 00:33:02,943 INFO L226 Difference]: Without dead ends: 276 [2018-10-01 00:33:02,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:33:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-10-01 00:33:02,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2018-10-01 00:33:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-10-01 00:33:02,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 278 transitions. [2018-10-01 00:33:02,978 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 278 transitions. Word has length 272 [2018-10-01 00:33:02,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:02,978 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 278 transitions. [2018-10-01 00:33:02,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:33:02,979 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 278 transitions. [2018-10-01 00:33:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-01 00:33:02,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:02,979 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1, 1, 1] [2018-10-01 00:33:02,980 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:02,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:02,980 INFO L82 PathProgramCache]: Analyzing trace with hash -104962987, now seen corresponding path program 106 times [2018-10-01 00:33:02,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:02,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:02,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:02,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:02,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 1591 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:03,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:03,549 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:33:03,557 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:03,685 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:03,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:03,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7209 backedges. 1591 proven. 5618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:04,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:04,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 00:33:04,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:33:04,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:33:04,159 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:04,159 INFO L87 Difference]: Start difference. First operand 276 states and 278 transitions. Second operand 57 states. [2018-10-01 00:33:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:05,562 INFO L93 Difference]: Finished difference Result 290 states and 293 transitions. [2018-10-01 00:33:05,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:33:05,562 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 273 [2018-10-01 00:33:05,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:05,562 INFO L225 Difference]: With dead ends: 290 [2018-10-01 00:33:05,563 INFO L226 Difference]: Without dead ends: 284 [2018-10-01 00:33:05,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:33:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-10-01 00:33:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 280. [2018-10-01 00:33:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-10-01 00:33:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 282 transitions. [2018-10-01 00:33:05,590 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 282 transitions. Word has length 273 [2018-10-01 00:33:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:05,590 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 282 transitions. [2018-10-01 00:33:05,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:33:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 282 transitions. [2018-10-01 00:33:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-01 00:33:05,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:05,591 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2018-10-01 00:33:05,591 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:05,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1553521333, now seen corresponding path program 107 times [2018-10-01 00:33:05,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:05,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:05,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:05,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:05,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7425 backedges. 5940 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:06,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:06,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:06,645 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:06,836 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-01 00:33:06,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:06,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7425 backedges. 5940 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:07,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:07,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:33:07,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:33:07,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:33:07,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:07,305 INFO L87 Difference]: Start difference. First operand 280 states and 282 transitions. Second operand 112 states. [2018-10-01 00:33:19,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:19,107 INFO L93 Difference]: Finished difference Result 508 states and 512 transitions. [2018-10-01 00:33:19,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:33:19,107 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 277 [2018-10-01 00:33:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:19,108 INFO L225 Difference]: With dead ends: 508 [2018-10-01 00:33:19,108 INFO L226 Difference]: Without dead ends: 281 [2018-10-01 00:33:19,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:33:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-10-01 00:33:19,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-10-01 00:33:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-10-01 00:33:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 283 transitions. [2018-10-01 00:33:19,134 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 283 transitions. Word has length 277 [2018-10-01 00:33:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:19,134 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 283 transitions. [2018-10-01 00:33:19,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:33:19,134 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 283 transitions. [2018-10-01 00:33:19,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 00:33:19,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:19,135 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 1, 1, 1, 1, 1] [2018-10-01 00:33:19,135 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:19,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1476595854, now seen corresponding path program 108 times [2018-10-01 00:33:19,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:19,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:19,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:19,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:19,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 1648 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:19,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:19,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:19,789 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:33:20,015 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:33:20,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:20,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 1648 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:20,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:20,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:33:20,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:33:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:33:20,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:20,500 INFO L87 Difference]: Start difference. First operand 281 states and 283 transitions. Second operand 58 states. [2018-10-01 00:33:21,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:21,507 INFO L93 Difference]: Finished difference Result 295 states and 298 transitions. [2018-10-01 00:33:21,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:33:21,507 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 278 [2018-10-01 00:33:21,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:21,508 INFO L225 Difference]: With dead ends: 295 [2018-10-01 00:33:21,508 INFO L226 Difference]: Without dead ends: 289 [2018-10-01 00:33:21,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:33:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-01 00:33:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 285. [2018-10-01 00:33:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-01 00:33:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 287 transitions. [2018-10-01 00:33:21,539 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 287 transitions. Word has length 278 [2018-10-01 00:33:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:21,539 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 287 transitions. [2018-10-01 00:33:21,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:33:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 287 transitions. [2018-10-01 00:33:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-01 00:33:21,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:21,540 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 1, 1, 1, 1, 1] [2018-10-01 00:33:21,540 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:21,540 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1426007576, now seen corresponding path program 109 times [2018-10-01 00:33:21,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:21,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:21,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:21,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:21,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7700 backedges. 6160 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:22,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:22,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:22,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:22,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7700 backedges. 6160 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:23,242 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:23,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:33:23,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:33:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:33:23,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:23,243 INFO L87 Difference]: Start difference. First operand 285 states and 287 transitions. Second operand 114 states. [2018-10-01 00:33:35,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:35,659 INFO L93 Difference]: Finished difference Result 517 states and 521 transitions. [2018-10-01 00:33:35,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:33:35,660 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 282 [2018-10-01 00:33:35,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:35,660 INFO L225 Difference]: With dead ends: 517 [2018-10-01 00:33:35,660 INFO L226 Difference]: Without dead ends: 286 [2018-10-01 00:33:35,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:33:35,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-01 00:33:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2018-10-01 00:33:35,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-10-01 00:33:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 288 transitions. [2018-10-01 00:33:35,694 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 288 transitions. Word has length 282 [2018-10-01 00:33:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:35,694 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 288 transitions. [2018-10-01 00:33:35,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:33:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 288 transitions. [2018-10-01 00:33:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-01 00:33:35,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:35,695 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 1, 1, 1, 1, 1] [2018-10-01 00:33:35,696 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:35,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:35,696 INFO L82 PathProgramCache]: Analyzing trace with hash 822497313, now seen corresponding path program 110 times [2018-10-01 00:33:35,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:35,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:35,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:35,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:33:35,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 1706 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:36,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:36,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:36,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:33:36,425 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:33:36,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:36,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7756 backedges. 1706 proven. 6050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:36,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:36,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 00:33:36,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:33:36,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:33:36,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:36,919 INFO L87 Difference]: Start difference. First operand 286 states and 288 transitions. Second operand 59 states. [2018-10-01 00:33:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:37,974 INFO L93 Difference]: Finished difference Result 300 states and 303 transitions. [2018-10-01 00:33:37,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:33:37,974 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 283 [2018-10-01 00:33:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:37,975 INFO L225 Difference]: With dead ends: 300 [2018-10-01 00:33:37,975 INFO L226 Difference]: Without dead ends: 294 [2018-10-01 00:33:37,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:33:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-01 00:33:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 290. [2018-10-01 00:33:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-10-01 00:33:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 292 transitions. [2018-10-01 00:33:38,008 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 292 transitions. Word has length 283 [2018-10-01 00:33:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:38,009 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 292 transitions. [2018-10-01 00:33:38,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:33:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 292 transitions. [2018-10-01 00:33:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-01 00:33:38,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:38,010 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 1, 1, 1, 1, 1] [2018-10-01 00:33:38,010 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:38,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:38,010 INFO L82 PathProgramCache]: Analyzing trace with hash -637777129, now seen corresponding path program 111 times [2018-10-01 00:33:38,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:38,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:38,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:38,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:38,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7980 backedges. 6384 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:39,127 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:39,127 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:39,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:33:39,392 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-10-01 00:33:39,392 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:39,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7980 backedges. 6384 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:39,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:39,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:33:39,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:33:39,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:33:39,885 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:39,885 INFO L87 Difference]: Start difference. First operand 290 states and 292 transitions. Second operand 116 states. [2018-10-01 00:33:52,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:52,665 INFO L93 Difference]: Finished difference Result 526 states and 530 transitions. [2018-10-01 00:33:52,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:33:52,665 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 287 [2018-10-01 00:33:52,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:52,666 INFO L225 Difference]: With dead ends: 526 [2018-10-01 00:33:52,666 INFO L226 Difference]: Without dead ends: 291 [2018-10-01 00:33:52,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:33:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-01 00:33:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-01 00:33:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-01 00:33:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 293 transitions. [2018-10-01 00:33:52,698 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 293 transitions. Word has length 287 [2018-10-01 00:33:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:52,698 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 293 transitions. [2018-10-01 00:33:52,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:33:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 293 transitions. [2018-10-01 00:33:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-01 00:33:52,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:52,699 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 1, 1, 1, 1, 1] [2018-10-01 00:33:52,699 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:52,699 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:52,699 INFO L82 PathProgramCache]: Analyzing trace with hash 204787838, now seen corresponding path program 112 times [2018-10-01 00:33:52,699 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:52,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:52,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:52,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:52,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 1765 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:53,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:53,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:53,315 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:33:53,453 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:33:53,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:53,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8037 backedges. 1765 proven. 6272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:53,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:53,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:33:53,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:33:53,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:33:53,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:53,948 INFO L87 Difference]: Start difference. First operand 291 states and 293 transitions. Second operand 60 states. [2018-10-01 00:33:55,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:33:55,006 INFO L93 Difference]: Finished difference Result 305 states and 308 transitions. [2018-10-01 00:33:55,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:33:55,007 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 288 [2018-10-01 00:33:55,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:33:55,007 INFO L225 Difference]: With dead ends: 305 [2018-10-01 00:33:55,007 INFO L226 Difference]: Without dead ends: 299 [2018-10-01 00:33:55,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:33:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-01 00:33:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2018-10-01 00:33:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-01 00:33:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 297 transitions. [2018-10-01 00:33:55,041 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 297 transitions. Word has length 288 [2018-10-01 00:33:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:33:55,042 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 297 transitions. [2018-10-01 00:33:55,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:33:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 297 transitions. [2018-10-01 00:33:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-01 00:33:55,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:33:55,043 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 1, 1, 1, 1, 1] [2018-10-01 00:33:55,043 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:33:55,043 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:33:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2131318004, now seen corresponding path program 113 times [2018-10-01 00:33:55,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:33:55,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:33:55,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:55,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:33:55,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:33:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:33:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8265 backedges. 6612 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:56,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:33:56,426 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:33:56,433 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:33:56,648 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-10-01 00:33:56,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:33:56,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:33:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8265 backedges. 6612 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:33:57,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:33:57,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:33:57,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:33:57,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:33:57,155 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:33:57,155 INFO L87 Difference]: Start difference. First operand 295 states and 297 transitions. Second operand 118 states. [2018-10-01 00:34:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:09,936 INFO L93 Difference]: Finished difference Result 535 states and 539 transitions. [2018-10-01 00:34:09,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:34:09,936 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 292 [2018-10-01 00:34:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:09,936 INFO L225 Difference]: With dead ends: 535 [2018-10-01 00:34:09,936 INFO L226 Difference]: Without dead ends: 296 [2018-10-01 00:34:09,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:34:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-10-01 00:34:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2018-10-01 00:34:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-10-01 00:34:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 298 transitions. [2018-10-01 00:34:09,969 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 298 transitions. Word has length 292 [2018-10-01 00:34:09,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:09,969 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 298 transitions. [2018-10-01 00:34:09,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:34:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 298 transitions. [2018-10-01 00:34:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-01 00:34:09,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:09,970 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 1, 1, 1, 1, 1] [2018-10-01 00:34:09,970 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:09,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1809901587, now seen corresponding path program 114 times [2018-10-01 00:34:09,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:09,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:09,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:09,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:09,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 1825 proven. 6498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:10,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:10,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:10,616 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:34:10,854 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-10-01 00:34:10,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:10,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8323 backedges. 1825 proven. 6498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:11,546 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:11,546 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 00:34:11,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:34:11,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:34:11,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:11,547 INFO L87 Difference]: Start difference. First operand 296 states and 298 transitions. Second operand 61 states. [2018-10-01 00:34:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:12,668 INFO L93 Difference]: Finished difference Result 310 states and 313 transitions. [2018-10-01 00:34:12,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:34:12,668 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 293 [2018-10-01 00:34:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:12,669 INFO L225 Difference]: With dead ends: 310 [2018-10-01 00:34:12,669 INFO L226 Difference]: Without dead ends: 304 [2018-10-01 00:34:12,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:34:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-10-01 00:34:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 300. [2018-10-01 00:34:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-10-01 00:34:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 302 transitions. [2018-10-01 00:34:12,704 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 302 transitions. Word has length 293 [2018-10-01 00:34:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:12,704 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 302 transitions. [2018-10-01 00:34:12,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:34:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 302 transitions. [2018-10-01 00:34:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-01 00:34:12,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:12,705 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 58, 1, 1, 1, 1, 1] [2018-10-01 00:34:12,705 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:12,705 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash -258716445, now seen corresponding path program 115 times [2018-10-01 00:34:12,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:12,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:12,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:12,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:12,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8555 backedges. 6844 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:13,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:13,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:13,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:14,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8555 backedges. 6844 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:14,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:14,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:34:14,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:34:14,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:34:14,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:14,545 INFO L87 Difference]: Start difference. First operand 300 states and 302 transitions. Second operand 120 states. [2018-10-01 00:34:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:28,631 INFO L93 Difference]: Finished difference Result 544 states and 548 transitions. [2018-10-01 00:34:28,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:34:28,631 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 297 [2018-10-01 00:34:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:28,632 INFO L225 Difference]: With dead ends: 544 [2018-10-01 00:34:28,633 INFO L226 Difference]: Without dead ends: 301 [2018-10-01 00:34:28,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:34:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-10-01 00:34:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-10-01 00:34:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-10-01 00:34:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 303 transitions. [2018-10-01 00:34:28,678 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 303 transitions. Word has length 297 [2018-10-01 00:34:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:28,679 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 303 transitions. [2018-10-01 00:34:28,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:34:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 303 transitions. [2018-10-01 00:34:28,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-01 00:34:28,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:28,680 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 1, 1, 1, 1, 1] [2018-10-01 00:34:28,680 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:28,681 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:28,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1974369674, now seen corresponding path program 116 times [2018-10-01 00:34:28,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:28,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:28,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:28,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:34:28,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 1886 proven. 6728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:29,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:29,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:29,322 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:34:29,455 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:34:29,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:29,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8614 backedges. 1886 proven. 6728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:29,953 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:29,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:34:29,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:34:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:34:29,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:29,954 INFO L87 Difference]: Start difference. First operand 301 states and 303 transitions. Second operand 62 states. [2018-10-01 00:34:31,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:31,130 INFO L93 Difference]: Finished difference Result 315 states and 318 transitions. [2018-10-01 00:34:31,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:34:31,137 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 298 [2018-10-01 00:34:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:31,137 INFO L225 Difference]: With dead ends: 315 [2018-10-01 00:34:31,138 INFO L226 Difference]: Without dead ends: 309 [2018-10-01 00:34:31,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:34:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-01 00:34:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2018-10-01 00:34:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-10-01 00:34:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 307 transitions. [2018-10-01 00:34:31,183 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 307 transitions. Word has length 298 [2018-10-01 00:34:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:31,184 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 307 transitions. [2018-10-01 00:34:31,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:34:31,184 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 307 transitions. [2018-10-01 00:34:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-01 00:34:31,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:31,185 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 59, 1, 1, 1, 1, 1] [2018-10-01 00:34:31,185 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:31,185 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:31,185 INFO L82 PathProgramCache]: Analyzing trace with hash 177052672, now seen corresponding path program 117 times [2018-10-01 00:34:31,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:31,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:31,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:31,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:31,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 7080 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:32,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:32,620 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:32,628 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:34:32,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-10-01 00:34:32,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:32,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 7080 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:33,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:33,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:34:33,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:34:33,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:34:33,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:33,443 INFO L87 Difference]: Start difference. First operand 305 states and 307 transitions. Second operand 122 states. [2018-10-01 00:34:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:47,639 INFO L93 Difference]: Finished difference Result 553 states and 557 transitions. [2018-10-01 00:34:47,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:34:47,640 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 302 [2018-10-01 00:34:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:47,640 INFO L225 Difference]: With dead ends: 553 [2018-10-01 00:34:47,640 INFO L226 Difference]: Without dead ends: 306 [2018-10-01 00:34:47,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:34:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-10-01 00:34:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2018-10-01 00:34:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-10-01 00:34:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 308 transitions. [2018-10-01 00:34:47,687 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 308 transitions. Word has length 302 [2018-10-01 00:34:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:47,688 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 308 transitions. [2018-10-01 00:34:47,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:34:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 308 transitions. [2018-10-01 00:34:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-01 00:34:47,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:47,689 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 1, 1, 1, 1, 1] [2018-10-01 00:34:47,689 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:47,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:47,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1421165639, now seen corresponding path program 118 times [2018-10-01 00:34:47,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:47,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:47,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:47,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:47,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 1948 proven. 6962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:48,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:48,322 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:48,329 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:34:48,490 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:34:48,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:48,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8910 backedges. 1948 proven. 6962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:49,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:49,007 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 00:34:49,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:34:49,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:34:49,008 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:49,008 INFO L87 Difference]: Start difference. First operand 306 states and 308 transitions. Second operand 63 states. [2018-10-01 00:34:50,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:34:50,124 INFO L93 Difference]: Finished difference Result 320 states and 323 transitions. [2018-10-01 00:34:50,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:34:50,124 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 303 [2018-10-01 00:34:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:34:50,124 INFO L225 Difference]: With dead ends: 320 [2018-10-01 00:34:50,125 INFO L226 Difference]: Without dead ends: 314 [2018-10-01 00:34:50,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:34:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-10-01 00:34:50,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 310. [2018-10-01 00:34:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-10-01 00:34:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 312 transitions. [2018-10-01 00:34:50,161 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 312 transitions. Word has length 303 [2018-10-01 00:34:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:34:50,161 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 312 transitions. [2018-10-01 00:34:50,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:34:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 312 transitions. [2018-10-01 00:34:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-01 00:34:50,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:34:50,163 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 60, 1, 1, 1, 1, 1] [2018-10-01 00:34:50,163 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:34:50,163 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:34:50,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2121345711, now seen corresponding path program 119 times [2018-10-01 00:34:50,163 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:34:50,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:34:50,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:50,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:34:50,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:34:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:34:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9150 backedges. 7320 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:51,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:34:51,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:34:51,385 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:34:51,613 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-01 00:34:51,613 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:34:51,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:34:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9150 backedges. 7320 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:34:52,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:34:52,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:34:52,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:34:52,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:34:52,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:34:52,370 INFO L87 Difference]: Start difference. First operand 310 states and 312 transitions. Second operand 124 states. [2018-10-01 00:35:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:06,261 INFO L93 Difference]: Finished difference Result 562 states and 566 transitions. [2018-10-01 00:35:06,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:35:06,261 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 307 [2018-10-01 00:35:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:06,262 INFO L225 Difference]: With dead ends: 562 [2018-10-01 00:35:06,262 INFO L226 Difference]: Without dead ends: 311 [2018-10-01 00:35:06,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time [2018-10-01 00:35:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-01 00:35:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-01 00:35:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-01 00:35:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 313 transitions. [2018-10-01 00:35:06,297 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 313 transitions. Word has length 307 [2018-10-01 00:35:06,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:06,297 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 313 transitions. [2018-10-01 00:35:06,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:35:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 313 transitions. [2018-10-01 00:35:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-01 00:35:06,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:06,299 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 1, 1, 1, 1, 1] [2018-10-01 00:35:06,299 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:06,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:06,299 INFO L82 PathProgramCache]: Analyzing trace with hash -306186602, now seen corresponding path program 120 times [2018-10-01 00:35:06,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:06,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:06,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:06,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:06,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 2011 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:06,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:06,974 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:06,987 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:07,244 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:35:07,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:07,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9211 backedges. 2011 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:07,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:07,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:35:07,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:35:07,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:35:07,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:07,945 INFO L87 Difference]: Start difference. First operand 311 states and 313 transitions. Second operand 64 states. [2018-10-01 00:35:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:09,392 INFO L93 Difference]: Finished difference Result 325 states and 328 transitions. [2018-10-01 00:35:09,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:35:09,393 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 308 [2018-10-01 00:35:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:09,393 INFO L225 Difference]: With dead ends: 325 [2018-10-01 00:35:09,394 INFO L226 Difference]: Without dead ends: 319 [2018-10-01 00:35:09,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:35:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-01 00:35:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-10-01 00:35:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-01 00:35:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 317 transitions. [2018-10-01 00:35:09,432 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 317 transitions. Word has length 308 [2018-10-01 00:35:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:09,432 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 317 transitions. [2018-10-01 00:35:09,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:35:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 317 transitions. [2018-10-01 00:35:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-01 00:35:09,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:09,433 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 61, 1, 1, 1, 1, 1] [2018-10-01 00:35:09,433 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:09,433 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:09,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1142706420, now seen corresponding path program 121 times [2018-10-01 00:35:09,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:09,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:09,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:09,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:09,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9455 backedges. 7564 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:10,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:10,688 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:10,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:10,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9455 backedges. 7564 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:11,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:11,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:35:11,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:35:11,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:35:11,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:11,390 INFO L87 Difference]: Start difference. First operand 315 states and 317 transitions. Second operand 126 states. [2018-10-01 00:35:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:26,044 INFO L93 Difference]: Finished difference Result 571 states and 575 transitions. [2018-10-01 00:35:26,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:35:26,044 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 312 [2018-10-01 00:35:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:26,044 INFO L225 Difference]: With dead ends: 571 [2018-10-01 00:35:26,044 INFO L226 Difference]: Without dead ends: 316 [2018-10-01 00:35:26,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:35:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-10-01 00:35:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2018-10-01 00:35:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-10-01 00:35:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 318 transitions. [2018-10-01 00:35:26,081 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 318 transitions. Word has length 312 [2018-10-01 00:35:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:26,081 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 318 transitions. [2018-10-01 00:35:26,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:35:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 318 transitions. [2018-10-01 00:35:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-01 00:35:26,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:26,082 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 1, 1, 1, 1, 1] [2018-10-01 00:35:26,082 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:26,083 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1622459515, now seen corresponding path program 122 times [2018-10-01 00:35:26,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:26,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:26,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:26,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:35:26,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 2075 proven. 7442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:26,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:26,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:26,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:35:26,926 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:35:26,926 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:26,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9517 backedges. 2075 proven. 7442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:27,464 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:27,464 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 00:35:27,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:35:27,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:35:27,465 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:27,465 INFO L87 Difference]: Start difference. First operand 316 states and 318 transitions. Second operand 65 states. [2018-10-01 00:35:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:29,184 INFO L93 Difference]: Finished difference Result 330 states and 333 transitions. [2018-10-01 00:35:29,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:35:29,184 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 313 [2018-10-01 00:35:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:29,185 INFO L225 Difference]: With dead ends: 330 [2018-10-01 00:35:29,185 INFO L226 Difference]: Without dead ends: 324 [2018-10-01 00:35:29,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:35:29,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-01 00:35:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2018-10-01 00:35:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2018-10-01 00:35:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 322 transitions. [2018-10-01 00:35:29,223 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 322 transitions. Word has length 313 [2018-10-01 00:35:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:29,223 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 322 transitions. [2018-10-01 00:35:29,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:35:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 322 transitions. [2018-10-01 00:35:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-01 00:35:29,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:29,225 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 1, 1, 1, 1, 1] [2018-10-01 00:35:29,225 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:29,225 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:29,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2069161083, now seen corresponding path program 123 times [2018-10-01 00:35:29,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:29,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:29,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:29,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 7812 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:30,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:30,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:30,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:35:30,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-10-01 00:35:30,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:30,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 7812 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:31,326 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:31,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:35:31,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:35:31,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:35:31,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:31,328 INFO L87 Difference]: Start difference. First operand 320 states and 322 transitions. Second operand 128 states. [2018-10-01 00:35:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:44,172 INFO L93 Difference]: Finished difference Result 580 states and 584 transitions. [2018-10-01 00:35:44,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:35:44,172 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 317 [2018-10-01 00:35:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:44,172 INFO L225 Difference]: With dead ends: 580 [2018-10-01 00:35:44,173 INFO L226 Difference]: Without dead ends: 321 [2018-10-01 00:35:44,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:35:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-10-01 00:35:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-10-01 00:35:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-10-01 00:35:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 323 transitions. [2018-10-01 00:35:44,225 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 323 transitions. Word has length 317 [2018-10-01 00:35:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:44,225 INFO L480 AbstractCegarLoop]: Abstraction has 321 states and 323 transitions. [2018-10-01 00:35:44,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:35:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 323 transitions. [2018-10-01 00:35:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-01 00:35:44,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:44,227 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1, 1] [2018-10-01 00:35:44,227 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:44,227 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:44,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1430207394, now seen corresponding path program 124 times [2018-10-01 00:35:44,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:44,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:44,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:44,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 2140 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:44,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:44,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:44,927 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:35:45,083 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:35:45,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:45,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 2140 proven. 7688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:45,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:45,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:35:45,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:35:45,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:35:45,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:45,669 INFO L87 Difference]: Start difference. First operand 321 states and 323 transitions. Second operand 66 states. [2018-10-01 00:35:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:47,032 INFO L93 Difference]: Finished difference Result 335 states and 338 transitions. [2018-10-01 00:35:47,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:35:47,032 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 318 [2018-10-01 00:35:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:47,033 INFO L225 Difference]: With dead ends: 335 [2018-10-01 00:35:47,033 INFO L226 Difference]: Without dead ends: 329 [2018-10-01 00:35:47,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:35:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-10-01 00:35:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 325. [2018-10-01 00:35:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-10-01 00:35:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 327 transitions. [2018-10-01 00:35:47,073 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 327 transitions. Word has length 318 [2018-10-01 00:35:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:47,074 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 327 transitions. [2018-10-01 00:35:47,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:35:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 327 transitions. [2018-10-01 00:35:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-01 00:35:47,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:47,075 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 63, 1, 1, 1, 1, 1] [2018-10-01 00:35:47,075 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:47,076 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:47,076 INFO L82 PathProgramCache]: Analyzing trace with hash 417435160, now seen corresponding path program 125 times [2018-10-01 00:35:47,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:47,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:47,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:47,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:47,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 8064 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:48,561 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:48,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:48,568 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:35:48,813 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-10-01 00:35:48,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:48,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:35:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10080 backedges. 8064 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:49,381 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:35:49,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:35:49,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:35:49,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:35:49,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:35:49,383 INFO L87 Difference]: Start difference. First operand 325 states and 327 transitions. Second operand 130 states. [2018-10-01 00:35:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:35:58,649 INFO L93 Difference]: Finished difference Result 589 states and 593 transitions. [2018-10-01 00:35:58,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:35:58,649 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 322 [2018-10-01 00:35:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:35:58,650 INFO L225 Difference]: With dead ends: 589 [2018-10-01 00:35:58,650 INFO L226 Difference]: Without dead ends: 326 [2018-10-01 00:35:58,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:35:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-10-01 00:35:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2018-10-01 00:35:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-10-01 00:35:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 328 transitions. [2018-10-01 00:35:58,689 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 328 transitions. Word has length 322 [2018-10-01 00:35:58,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:35:58,689 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 328 transitions. [2018-10-01 00:35:58,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:35:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 328 transitions. [2018-10-01 00:35:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-01 00:35:58,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:35:58,690 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 1, 1, 1, 1, 1] [2018-10-01 00:35:58,691 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:35:58,691 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:35:58,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1721591983, now seen corresponding path program 126 times [2018-10-01 00:35:58,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:35:58,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:35:58,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:58,692 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:35:58,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:35:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:35:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 2206 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:35:59,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:35:59,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:35:59,426 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:35:59,691 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-10-01 00:35:59,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:35:59,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10144 backedges. 2206 proven. 7938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:00,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:00,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 00:36:00,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:36:00,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:36:00,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:00,249 INFO L87 Difference]: Start difference. First operand 326 states and 328 transitions. Second operand 67 states. [2018-10-01 00:36:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:02,004 INFO L93 Difference]: Finished difference Result 340 states and 343 transitions. [2018-10-01 00:36:02,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:36:02,004 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 323 [2018-10-01 00:36:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:02,005 INFO L225 Difference]: With dead ends: 340 [2018-10-01 00:36:02,005 INFO L226 Difference]: Without dead ends: 334 [2018-10-01 00:36:02,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:36:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-10-01 00:36:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2018-10-01 00:36:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-10-01 00:36:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 332 transitions. [2018-10-01 00:36:02,063 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 332 transitions. Word has length 323 [2018-10-01 00:36:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:02,064 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 332 transitions. [2018-10-01 00:36:02,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:36:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 332 transitions. [2018-10-01 00:36:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-01 00:36:02,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:02,065 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 64, 1, 1, 1, 1, 1] [2018-10-01 00:36:02,066 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:02,066 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:02,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1618904505, now seen corresponding path program 127 times [2018-10-01 00:36:02,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:02,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:02,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:02,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:02,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10400 backedges. 8320 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:03,401 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:03,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:03,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:03,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10400 backedges. 8320 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:04,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:04,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:36:04,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:36:04,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:36:04,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:04,200 INFO L87 Difference]: Start difference. First operand 330 states and 332 transitions. Second operand 132 states. [2018-10-01 00:36:14,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:14,415 INFO L93 Difference]: Finished difference Result 598 states and 602 transitions. [2018-10-01 00:36:14,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:36:14,415 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 327 [2018-10-01 00:36:14,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:14,416 INFO L225 Difference]: With dead ends: 598 [2018-10-01 00:36:14,416 INFO L226 Difference]: Without dead ends: 331 [2018-10-01 00:36:14,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:36:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-01 00:36:14,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-01 00:36:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-01 00:36:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 333 transitions. [2018-10-01 00:36:14,450 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 333 transitions. Word has length 327 [2018-10-01 00:36:14,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:14,450 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 333 transitions. [2018-10-01 00:36:14,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:36:14,450 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 333 transitions. [2018-10-01 00:36:14,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-01 00:36:14,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:14,451 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 1, 1, 1, 1, 1] [2018-10-01 00:36:14,451 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:14,451 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash 75648174, now seen corresponding path program 128 times [2018-10-01 00:36:14,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:14,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:14,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:14,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:14,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 2273 proven. 8192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:15,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:15,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:15,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:36:15,325 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:36:15,325 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:15,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10465 backedges. 2273 proven. 8192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:15,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:15,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:36:15,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:36:15,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:36:15,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:15,887 INFO L87 Difference]: Start difference. First operand 331 states and 333 transitions. Second operand 68 states. [2018-10-01 00:36:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:17,285 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2018-10-01 00:36:17,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:36:17,285 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 328 [2018-10-01 00:36:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:17,286 INFO L225 Difference]: With dead ends: 345 [2018-10-01 00:36:17,286 INFO L226 Difference]: Without dead ends: 339 [2018-10-01 00:36:17,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:36:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-01 00:36:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2018-10-01 00:36:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-01 00:36:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 337 transitions. [2018-10-01 00:36:17,326 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 337 transitions. Word has length 328 [2018-10-01 00:36:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:17,326 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 337 transitions. [2018-10-01 00:36:17,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:36:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 337 transitions. [2018-10-01 00:36:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-01 00:36:17,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:17,327 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 65, 1, 1, 1, 1, 1] [2018-10-01 00:36:17,327 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:17,327 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:17,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1591556388, now seen corresponding path program 129 times [2018-10-01 00:36:17,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:17,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:17,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:17,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:17,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10725 backedges. 8580 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:18,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:18,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:18,678 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:36:19,020 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-10-01 00:36:19,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:19,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10725 backedges. 8580 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:19,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:19,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:36:19,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:36:19,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:36:19,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:19,666 INFO L87 Difference]: Start difference. First operand 335 states and 337 transitions. Second operand 134 states. [2018-10-01 00:36:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:30,058 INFO L93 Difference]: Finished difference Result 607 states and 611 transitions. [2018-10-01 00:36:30,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:36:30,058 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 332 [2018-10-01 00:36:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:30,059 INFO L225 Difference]: With dead ends: 607 [2018-10-01 00:36:30,059 INFO L226 Difference]: Without dead ends: 336 [2018-10-01 00:36:30,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time [2018-10-01 00:36:30,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-10-01 00:36:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-10-01 00:36:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-10-01 00:36:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 338 transitions. [2018-10-01 00:36:30,102 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 338 transitions. Word has length 332 [2018-10-01 00:36:30,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:30,102 INFO L480 AbstractCegarLoop]: Abstraction has 336 states and 338 transitions. [2018-10-01 00:36:30,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:36:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 338 transitions. [2018-10-01 00:36:30,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-01 00:36:30,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:30,104 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 1, 1, 1, 1, 1] [2018-10-01 00:36:30,104 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:30,104 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash 592629533, now seen corresponding path program 130 times [2018-10-01 00:36:30,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:30,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:30,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:30,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:30,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 2341 proven. 8450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:30,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:30,820 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:30,827 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:36:30,985 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:36:30,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:30,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 10791 backedges. 2341 proven. 8450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:31,582 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:31,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 00:36:31,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:36:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:36:31,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:31,583 INFO L87 Difference]: Start difference. First operand 336 states and 338 transitions. Second operand 69 states. [2018-10-01 00:36:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:33,077 INFO L93 Difference]: Finished difference Result 350 states and 353 transitions. [2018-10-01 00:36:33,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:36:33,077 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 333 [2018-10-01 00:36:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:33,078 INFO L225 Difference]: With dead ends: 350 [2018-10-01 00:36:33,078 INFO L226 Difference]: Without dead ends: 344 [2018-10-01 00:36:33,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:36:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2018-10-01 00:36:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2018-10-01 00:36:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-01 00:36:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 342 transitions. [2018-10-01 00:36:33,116 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 342 transitions. Word has length 333 [2018-10-01 00:36:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:33,116 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 342 transitions. [2018-10-01 00:36:33,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:36:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 342 transitions. [2018-10-01 00:36:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-01 00:36:33,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:33,118 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 66, 1, 1, 1, 1, 1] [2018-10-01 00:36:33,118 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:33,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1011291117, now seen corresponding path program 131 times [2018-10-01 00:36:33,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:33,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:33,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:33,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:33,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:34,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11055 backedges. 8844 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:34,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:34,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:34,720 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:36:34,980 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-01 00:36:34,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:34,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11055 backedges. 8844 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:35,551 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:35,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:36:35,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:36:35,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:36:35,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:35,553 INFO L87 Difference]: Start difference. First operand 340 states and 342 transitions. Second operand 136 states. [2018-10-01 00:36:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:46,412 INFO L93 Difference]: Finished difference Result 616 states and 620 transitions. [2018-10-01 00:36:46,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:36:46,413 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 337 [2018-10-01 00:36:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:46,414 INFO L225 Difference]: With dead ends: 616 [2018-10-01 00:36:46,414 INFO L226 Difference]: Without dead ends: 341 [2018-10-01 00:36:46,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 00:36:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-10-01 00:36:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-10-01 00:36:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-10-01 00:36:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 343 transitions. [2018-10-01 00:36:46,475 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 343 transitions. Word has length 337 [2018-10-01 00:36:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:46,476 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 343 transitions. [2018-10-01 00:36:46,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:36:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 343 transitions. [2018-10-01 00:36:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-01 00:36:46,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:46,478 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 1, 1, 1, 1, 1] [2018-10-01 00:36:46,478 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:46,478 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1801398714, now seen corresponding path program 132 times [2018-10-01 00:36:46,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:46,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:46,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:46,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:46,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 2410 proven. 8712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:47,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:47,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:47,349 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:36:47,635 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:36:47,635 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:36:47,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11122 backedges. 2410 proven. 8712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:48,236 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:48,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:36:48,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:36:48,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:36:48,237 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:48,238 INFO L87 Difference]: Start difference. First operand 341 states and 343 transitions. Second operand 70 states. [2018-10-01 00:36:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:50,349 INFO L93 Difference]: Finished difference Result 355 states and 358 transitions. [2018-10-01 00:36:50,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:36:50,350 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 338 [2018-10-01 00:36:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:50,351 INFO L225 Difference]: With dead ends: 355 [2018-10-01 00:36:50,351 INFO L226 Difference]: Without dead ends: 349 [2018-10-01 00:36:50,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:36:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-10-01 00:36:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2018-10-01 00:36:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-10-01 00:36:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 347 transitions. [2018-10-01 00:36:50,393 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 347 transitions. Word has length 338 [2018-10-01 00:36:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:50,394 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 347 transitions. [2018-10-01 00:36:50,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:36:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 347 transitions. [2018-10-01 00:36:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-01 00:36:50,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:50,395 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 67, 1, 1, 1, 1, 1] [2018-10-01 00:36:50,396 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:50,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash 581742640, now seen corresponding path program 133 times [2018-10-01 00:36:50,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:50,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:50,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:50,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:36:50,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11390 backedges. 9112 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:51,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:36:51,836 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:36:51,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:36:52,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:36:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11390 backedges. 9112 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:36:52,600 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:36:52,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:36:52,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:36:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:36:52,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:36:52,602 INFO L87 Difference]: Start difference. First operand 345 states and 347 transitions. Second operand 138 states. [2018-10-01 00:36:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:36:59,536 INFO L93 Difference]: Finished difference Result 625 states and 629 transitions. [2018-10-01 00:36:59,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:36:59,536 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 342 [2018-10-01 00:36:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:36:59,536 INFO L225 Difference]: With dead ends: 625 [2018-10-01 00:36:59,537 INFO L226 Difference]: Without dead ends: 346 [2018-10-01 00:36:59,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time [2018-10-01 00:36:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-10-01 00:36:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2018-10-01 00:36:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-10-01 00:36:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 348 transitions. [2018-10-01 00:36:59,579 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 348 transitions. Word has length 342 [2018-10-01 00:36:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:36:59,579 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 348 transitions. [2018-10-01 00:36:59,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:36:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 348 transitions. [2018-10-01 00:36:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-01 00:36:59,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:36:59,580 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 1, 1, 1, 1, 1] [2018-10-01 00:36:59,581 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:36:59,581 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:36:59,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2023890199, now seen corresponding path program 134 times [2018-10-01 00:36:59,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:36:59,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:36:59,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:59,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:36:59,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:36:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 2480 proven. 8978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:00,630 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:00,630 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:00,637 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:37:00,794 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:37:00,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:00,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11458 backedges. 2480 proven. 8978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:01,387 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:01,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 00:37:01,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:37:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:37:01,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:01,388 INFO L87 Difference]: Start difference. First operand 346 states and 348 transitions. Second operand 71 states. [2018-10-01 00:37:02,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:02,874 INFO L93 Difference]: Finished difference Result 360 states and 363 transitions. [2018-10-01 00:37:02,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:37:02,874 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 343 [2018-10-01 00:37:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:02,875 INFO L225 Difference]: With dead ends: 360 [2018-10-01 00:37:02,875 INFO L226 Difference]: Without dead ends: 354 [2018-10-01 00:37:02,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:37:02,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-01 00:37:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 350. [2018-10-01 00:37:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2018-10-01 00:37:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 352 transitions. [2018-10-01 00:37:02,918 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 352 transitions. Word has length 343 [2018-10-01 00:37:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:02,919 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 352 transitions. [2018-10-01 00:37:02,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:37:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 352 transitions. [2018-10-01 00:37:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-01 00:37:02,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:02,920 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 68, 1, 1, 1, 1, 1] [2018-10-01 00:37:02,920 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:02,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1094531551, now seen corresponding path program 135 times [2018-10-01 00:37:02,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:02,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:02,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:02,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:02,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 11730 backedges. 9384 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:04,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:04,441 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:04,448 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:37:04,811 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-10-01 00:37:04,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:04,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 11730 backedges. 9384 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:05,688 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:05,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:37:05,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:37:05,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:37:05,690 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:05,690 INFO L87 Difference]: Start difference. First operand 350 states and 352 transitions. Second operand 140 states. [2018-10-01 00:37:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:10,112 INFO L93 Difference]: Finished difference Result 634 states and 638 transitions. [2018-10-01 00:37:10,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 00:37:10,112 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 347 [2018-10-01 00:37:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:10,113 INFO L225 Difference]: With dead ends: 634 [2018-10-01 00:37:10,113 INFO L226 Difference]: Without dead ends: 351 [2018-10-01 00:37:10,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time [2018-10-01 00:37:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-01 00:37:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-01 00:37:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-01 00:37:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 353 transitions. [2018-10-01 00:37:10,156 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 353 transitions. Word has length 347 [2018-10-01 00:37:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:10,156 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 353 transitions. [2018-10-01 00:37:10,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:37:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 353 transitions. [2018-10-01 00:37:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-01 00:37:10,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:10,157 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 1, 1, 1, 1, 1] [2018-10-01 00:37:10,157 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:10,158 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1322528058, now seen corresponding path program 136 times [2018-10-01 00:37:10,158 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:10,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:10,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:10,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:10,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 2551 proven. 9248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:11,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:11,006 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:11,013 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:37:11,184 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:37:11,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:11,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11799 backedges. 2551 proven. 9248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:11,793 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:11,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:37:11,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:37:11,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:37:11,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:11,794 INFO L87 Difference]: Start difference. First operand 351 states and 353 transitions. Second operand 72 states. [2018-10-01 00:37:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:13,310 INFO L93 Difference]: Finished difference Result 365 states and 368 transitions. [2018-10-01 00:37:13,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:37:13,310 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 348 [2018-10-01 00:37:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:13,311 INFO L225 Difference]: With dead ends: 365 [2018-10-01 00:37:13,311 INFO L226 Difference]: Without dead ends: 359 [2018-10-01 00:37:13,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:37:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-01 00:37:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 355. [2018-10-01 00:37:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-01 00:37:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 357 transitions. [2018-10-01 00:37:13,377 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 357 transitions. Word has length 348 [2018-10-01 00:37:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:13,377 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 357 transitions. [2018-10-01 00:37:13,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:37:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 357 transitions. [2018-10-01 00:37:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-10-01 00:37:13,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:13,379 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 69, 1, 1, 1, 1, 1] [2018-10-01 00:37:13,379 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:13,380 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:13,380 INFO L82 PathProgramCache]: Analyzing trace with hash -257559748, now seen corresponding path program 137 times [2018-10-01 00:37:13,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:13,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:13,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:13,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:13,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12075 backedges. 9660 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:14,917 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:14,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:14,924 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:37:15,201 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-10-01 00:37:15,201 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:15,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12075 backedges. 9660 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:15,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:15,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 00:37:15,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 00:37:15,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 00:37:15,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:15,937 INFO L87 Difference]: Start difference. First operand 355 states and 357 transitions. Second operand 142 states. [2018-10-01 00:37:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:27,376 INFO L93 Difference]: Finished difference Result 643 states and 647 transitions. [2018-10-01 00:37:27,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 00:37:27,376 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 352 [2018-10-01 00:37:27,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:27,377 INFO L225 Difference]: With dead ends: 643 [2018-10-01 00:37:27,377 INFO L226 Difference]: Without dead ends: 356 [2018-10-01 00:37:27,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time [2018-10-01 00:37:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-01 00:37:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-01 00:37:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-01 00:37:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 358 transitions. [2018-10-01 00:37:27,422 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 358 transitions. Word has length 352 [2018-10-01 00:37:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:27,422 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 358 transitions. [2018-10-01 00:37:27,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 00:37:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 358 transitions. [2018-10-01 00:37:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-01 00:37:27,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:27,423 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 1, 1, 1, 1, 1] [2018-10-01 00:37:27,423 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:27,424 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 809882293, now seen corresponding path program 138 times [2018-10-01 00:37:27,424 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:27,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:27,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:27,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:27,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 2623 proven. 9522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:28,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:28,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:28,311 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:37:28,630 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-10-01 00:37:28,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:28,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12145 backedges. 2623 proven. 9522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:29,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:29,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 00:37:29,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:37:29,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:37:29,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:29,246 INFO L87 Difference]: Start difference. First operand 356 states and 358 transitions. Second operand 73 states. [2018-10-01 00:37:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:30,922 INFO L93 Difference]: Finished difference Result 370 states and 373 transitions. [2018-10-01 00:37:30,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:37:30,922 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 353 [2018-10-01 00:37:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:30,923 INFO L225 Difference]: With dead ends: 370 [2018-10-01 00:37:30,923 INFO L226 Difference]: Without dead ends: 364 [2018-10-01 00:37:30,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:37:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-10-01 00:37:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 360. [2018-10-01 00:37:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-10-01 00:37:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 362 transitions. [2018-10-01 00:37:30,969 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 362 transitions. Word has length 353 [2018-10-01 00:37:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:30,969 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 362 transitions. [2018-10-01 00:37:30,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:37:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 362 transitions. [2018-10-01 00:37:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-10-01 00:37:30,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:30,970 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 70, 1, 1, 1, 1, 1] [2018-10-01 00:37:30,971 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:30,971 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:30,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1372611499, now seen corresponding path program 139 times [2018-10-01 00:37:30,971 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:30,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:30,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:30,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:30,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12425 backedges. 9940 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:32,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:32,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:32,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:32,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12425 backedges. 9940 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:33,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:33,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 00:37:33,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:37:33,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:37:33,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:33,232 INFO L87 Difference]: Start difference. First operand 360 states and 362 transitions. Second operand 144 states. [2018-10-01 00:37:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:45,629 INFO L93 Difference]: Finished difference Result 652 states and 656 transitions. [2018-10-01 00:37:45,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 00:37:45,629 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 357 [2018-10-01 00:37:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:45,629 INFO L225 Difference]: With dead ends: 652 [2018-10-01 00:37:45,630 INFO L226 Difference]: Without dead ends: 361 [2018-10-01 00:37:45,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time [2018-10-01 00:37:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-01 00:37:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-10-01 00:37:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-01 00:37:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 363 transitions. [2018-10-01 00:37:45,676 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 363 transitions. Word has length 357 [2018-10-01 00:37:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:45,676 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 363 transitions. [2018-10-01 00:37:45,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:37:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 363 transitions. [2018-10-01 00:37:45,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-01 00:37:45,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:45,677 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 1, 1, 1, 1, 1] [2018-10-01 00:37:45,677 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:45,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:45,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1421756370, now seen corresponding path program 140 times [2018-10-01 00:37:45,678 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:45,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:45,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:45,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:37:45,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 2696 proven. 9800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:46,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:46,774 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:46,781 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:37:46,942 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:37:46,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:46,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12496 backedges. 2696 proven. 9800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:47,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:47,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:37:47,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:37:47,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:37:47,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:47,590 INFO L87 Difference]: Start difference. First operand 361 states and 363 transitions. Second operand 74 states. [2018-10-01 00:37:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:49,123 INFO L93 Difference]: Finished difference Result 375 states and 378 transitions. [2018-10-01 00:37:49,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:37:49,124 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 358 [2018-10-01 00:37:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:49,124 INFO L225 Difference]: With dead ends: 375 [2018-10-01 00:37:49,124 INFO L226 Difference]: Without dead ends: 369 [2018-10-01 00:37:49,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:37:49,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-10-01 00:37:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2018-10-01 00:37:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-01 00:37:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 367 transitions. [2018-10-01 00:37:49,238 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 367 transitions. Word has length 358 [2018-10-01 00:37:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:49,239 INFO L480 AbstractCegarLoop]: Abstraction has 365 states and 367 transitions. [2018-10-01 00:37:49,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:37:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 367 transitions. [2018-10-01 00:37:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-01 00:37:49,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:49,241 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 71, 1, 1, 1, 1, 1] [2018-10-01 00:37:49,241 INFO L423 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:49,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:49,242 INFO L82 PathProgramCache]: Analyzing trace with hash -325123512, now seen corresponding path program 141 times [2018-10-01 00:37:49,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:49,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:49,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:49,242 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:49,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12780 backedges. 10224 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:50,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:50,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:50,936 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:37:51,352 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-10-01 00:37:51,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:51,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12780 backedges. 10224 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:51,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:51,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 00:37:51,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 00:37:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 00:37:51,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:51,973 INFO L87 Difference]: Start difference. First operand 365 states and 367 transitions. Second operand 146 states. [2018-10-01 00:37:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:37:56,492 INFO L93 Difference]: Finished difference Result 661 states and 665 transitions. [2018-10-01 00:37:56,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 00:37:56,492 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 362 [2018-10-01 00:37:56,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:37:56,492 INFO L225 Difference]: With dead ends: 661 [2018-10-01 00:37:56,493 INFO L226 Difference]: Without dead ends: 366 [2018-10-01 00:37:56,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time [2018-10-01 00:37:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2018-10-01 00:37:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2018-10-01 00:37:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-10-01 00:37:56,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 368 transitions. [2018-10-01 00:37:56,540 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 368 transitions. Word has length 362 [2018-10-01 00:37:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:37:56,540 INFO L480 AbstractCegarLoop]: Abstraction has 366 states and 368 transitions. [2018-10-01 00:37:56,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 00:37:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 368 transitions. [2018-10-01 00:37:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-01 00:37:56,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:37:56,541 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 1, 1, 1, 1, 1] [2018-10-01 00:37:56,541 INFO L423 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:37:56,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:37:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash 156016257, now seen corresponding path program 142 times [2018-10-01 00:37:56,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:37:56,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:37:56,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:56,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:37:56,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:37:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:37:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 2770 proven. 10082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:57,445 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:37:57,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:37:57,454 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:37:57,673 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:37:57,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:37:57,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:37:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12852 backedges. 2770 proven. 10082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:37:58,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:37:58,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 00:37:58,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:37:58,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:37:58,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:37:58,346 INFO L87 Difference]: Start difference. First operand 366 states and 368 transitions. Second operand 75 states. [2018-10-01 00:38:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:00,808 INFO L93 Difference]: Finished difference Result 380 states and 383 transitions. [2018-10-01 00:38:00,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:38:00,808 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 363 [2018-10-01 00:38:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:00,809 INFO L225 Difference]: With dead ends: 380 [2018-10-01 00:38:00,809 INFO L226 Difference]: Without dead ends: 374 [2018-10-01 00:38:00,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:38:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-10-01 00:38:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2018-10-01 00:38:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-10-01 00:38:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 372 transitions. [2018-10-01 00:38:00,858 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 372 transitions. Word has length 363 [2018-10-01 00:38:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:00,858 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 372 transitions. [2018-10-01 00:38:00,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:38:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 372 transitions. [2018-10-01 00:38:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-01 00:38:00,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:00,859 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 72, 1, 1, 1, 1, 1] [2018-10-01 00:38:00,860 INFO L423 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:00,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:00,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1874094455, now seen corresponding path program 143 times [2018-10-01 00:38:00,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:00,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:00,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:00,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:00,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13140 backedges. 10512 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:02,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:02,759 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:02,766 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:38:03,072 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-01 00:38:03,072 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:03,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13140 backedges. 10512 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:03,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:03,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 00:38:03,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 00:38:03,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 00:38:03,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:03,742 INFO L87 Difference]: Start difference. First operand 370 states and 372 transitions. Second operand 148 states. [2018-10-01 00:38:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:17,490 INFO L93 Difference]: Finished difference Result 670 states and 674 transitions. [2018-10-01 00:38:17,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 00:38:17,490 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 367 [2018-10-01 00:38:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:17,490 INFO L225 Difference]: With dead ends: 670 [2018-10-01 00:38:17,490 INFO L226 Difference]: Without dead ends: 371 [2018-10-01 00:38:17,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 00:38:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-01 00:38:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-10-01 00:38:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-01 00:38:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 373 transitions. [2018-10-01 00:38:17,539 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 373 transitions. Word has length 367 [2018-10-01 00:38:17,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:17,540 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 373 transitions. [2018-10-01 00:38:17,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 00:38:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 373 transitions. [2018-10-01 00:38:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-01 00:38:17,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:17,541 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 1, 1, 1, 1, 1] [2018-10-01 00:38:17,541 INFO L423 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:17,541 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash -865302306, now seen corresponding path program 144 times [2018-10-01 00:38:17,541 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:17,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:17,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:17,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:17,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 2845 proven. 10368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:18,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:18,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:18,448 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:38:18,784 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:38:18,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:18,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13213 backedges. 2845 proven. 10368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:19,480 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:19,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:38:19,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:38:19,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:38:19,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:19,481 INFO L87 Difference]: Start difference. First operand 371 states and 373 transitions. Second operand 76 states. [2018-10-01 00:38:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:21,163 INFO L93 Difference]: Finished difference Result 385 states and 388 transitions. [2018-10-01 00:38:21,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:38:21,164 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 368 [2018-10-01 00:38:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:21,164 INFO L225 Difference]: With dead ends: 385 [2018-10-01 00:38:21,164 INFO L226 Difference]: Without dead ends: 379 [2018-10-01 00:38:21,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:38:21,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-01 00:38:21,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2018-10-01 00:38:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-01 00:38:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 377 transitions. [2018-10-01 00:38:21,211 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 377 transitions. Word has length 368 [2018-10-01 00:38:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:21,212 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 377 transitions. [2018-10-01 00:38:21,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:38:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 377 transitions. [2018-10-01 00:38:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-10-01 00:38:21,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:21,213 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 73, 1, 1, 1, 1, 1] [2018-10-01 00:38:21,213 INFO L423 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:21,213 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1911414100, now seen corresponding path program 145 times [2018-10-01 00:38:21,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:21,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:21,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:21,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:21,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13505 backedges. 10804 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:23,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:23,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:23,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:23,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13505 backedges. 10804 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:24,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:24,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 00:38:24,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 00:38:24,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 00:38:24,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:24,030 INFO L87 Difference]: Start difference. First operand 375 states and 377 transitions. Second operand 150 states. [2018-10-01 00:38:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:41,831 INFO L93 Difference]: Finished difference Result 679 states and 683 transitions. [2018-10-01 00:38:41,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 00:38:41,832 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 372 [2018-10-01 00:38:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:41,832 INFO L225 Difference]: With dead ends: 679 [2018-10-01 00:38:41,832 INFO L226 Difference]: Without dead ends: 376 [2018-10-01 00:38:41,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 00:38:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-10-01 00:38:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2018-10-01 00:38:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-10-01 00:38:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 378 transitions. [2018-10-01 00:38:41,877 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 378 transitions. Word has length 372 [2018-10-01 00:38:41,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:41,877 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 378 transitions. [2018-10-01 00:38:41,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 00:38:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 378 transitions. [2018-10-01 00:38:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-01 00:38:41,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:41,878 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 1, 1, 1, 1, 1] [2018-10-01 00:38:41,878 INFO L423 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:41,879 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash -566999475, now seen corresponding path program 146 times [2018-10-01 00:38:41,879 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:41,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:41,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:41,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:38:41,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 2921 proven. 10658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:42,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:42,997 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:43,004 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:38:43,195 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:38:43,196 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:43,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13579 backedges. 2921 proven. 10658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:44,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:44,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 00:38:44,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:38:44,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:38:44,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:44,143 INFO L87 Difference]: Start difference. First operand 376 states and 378 transitions. Second operand 77 states. [2018-10-01 00:38:45,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:38:45,831 INFO L93 Difference]: Finished difference Result 390 states and 393 transitions. [2018-10-01 00:38:45,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:38:45,831 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 373 [2018-10-01 00:38:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:38:45,832 INFO L225 Difference]: With dead ends: 390 [2018-10-01 00:38:45,832 INFO L226 Difference]: Without dead ends: 384 [2018-10-01 00:38:45,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:38:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-01 00:38:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 380. [2018-10-01 00:38:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-01 00:38:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 382 transitions. [2018-10-01 00:38:45,878 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 382 transitions. Word has length 373 [2018-10-01 00:38:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:38:45,878 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 382 transitions. [2018-10-01 00:38:45,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 00:38:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 382 transitions. [2018-10-01 00:38:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-01 00:38:45,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:38:45,879 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 1, 1, 1, 1, 1] [2018-10-01 00:38:45,879 INFO L423 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:38:45,879 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:38:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1247065277, now seen corresponding path program 147 times [2018-10-01 00:38:45,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:38:45,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:38:45,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:38:45,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:38:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:38:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13875 backedges. 11100 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:47,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:38:47,746 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:38:47,753 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:38:48,207 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 75 check-sat command(s) [2018-10-01 00:38:48,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:38:48,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:38:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13875 backedges. 11100 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:38:48,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:38:48,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 00:38:48,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 00:38:48,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 00:38:48,931 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:38:48,931 INFO L87 Difference]: Start difference. First operand 380 states and 382 transitions. Second operand 152 states. [2018-10-01 00:39:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:11,322 INFO L93 Difference]: Finished difference Result 688 states and 692 transitions. [2018-10-01 00:39:11,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 00:39:11,322 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 377 [2018-10-01 00:39:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:11,323 INFO L225 Difference]: With dead ends: 688 [2018-10-01 00:39:11,323 INFO L226 Difference]: Without dead ends: 381 [2018-10-01 00:39:11,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time [2018-10-01 00:39:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-01 00:39:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-10-01 00:39:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-01 00:39:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 383 transitions. [2018-10-01 00:39:11,374 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 383 transitions. Word has length 377 [2018-10-01 00:39:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:11,374 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 383 transitions. [2018-10-01 00:39:11,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 00:39:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 383 transitions. [2018-10-01 00:39:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-01 00:39:11,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:11,377 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 1, 1, 1, 1, 1] [2018-10-01 00:39:11,377 INFO L423 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:11,377 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash 638359018, now seen corresponding path program 148 times [2018-10-01 00:39:11,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:11,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:11,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:11,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:11,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 2998 proven. 10952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:12,307 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:12,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:12,315 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:12,515 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:12,515 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:12,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13950 backedges. 2998 proven. 10952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:13,496 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:13,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:39:13,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:39:13,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:39:13,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:13,497 INFO L87 Difference]: Start difference. First operand 381 states and 383 transitions. Second operand 78 states. [2018-10-01 00:39:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:15,515 INFO L93 Difference]: Finished difference Result 395 states and 398 transitions. [2018-10-01 00:39:15,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:39:15,515 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 378 [2018-10-01 00:39:15,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:15,516 INFO L225 Difference]: With dead ends: 395 [2018-10-01 00:39:15,516 INFO L226 Difference]: Without dead ends: 389 [2018-10-01 00:39:15,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:39:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-10-01 00:39:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2018-10-01 00:39:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-10-01 00:39:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 387 transitions. [2018-10-01 00:39:15,594 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 387 transitions. Word has length 378 [2018-10-01 00:39:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:15,595 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 387 transitions. [2018-10-01 00:39:15,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:39:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 387 transitions. [2018-10-01 00:39:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-01 00:39:15,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:15,597 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 75, 1, 1, 1, 1, 1] [2018-10-01 00:39:15,597 INFO L423 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:15,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1284996000, now seen corresponding path program 149 times [2018-10-01 00:39:15,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:15,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:15,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:15,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14250 backedges. 11400 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:17,363 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:17,363 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:39:17,370 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:17,723 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 76 check-sat command(s) [2018-10-01 00:39:17,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:17,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14250 backedges. 11400 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:18,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:18,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 00:39:18,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 00:39:18,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 00:39:18,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:18,717 INFO L87 Difference]: Start difference. First operand 385 states and 387 transitions. Second operand 154 states. [2018-10-01 00:39:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:41,726 INFO L93 Difference]: Finished difference Result 697 states and 701 transitions. [2018-10-01 00:39:41,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 00:39:41,726 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 382 [2018-10-01 00:39:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:41,727 INFO L225 Difference]: With dead ends: 697 [2018-10-01 00:39:41,727 INFO L226 Difference]: Without dead ends: 386 [2018-10-01 00:39:41,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time [2018-10-01 00:39:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-10-01 00:39:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2018-10-01 00:39:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-10-01 00:39:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 388 transitions. [2018-10-01 00:39:41,779 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 388 transitions. Word has length 382 [2018-10-01 00:39:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:41,780 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 388 transitions. [2018-10-01 00:39:41,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 00:39:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 388 transitions. [2018-10-01 00:39:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-01 00:39:41,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:41,781 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 1, 1, 1, 1, 1] [2018-10-01 00:39:41,781 INFO L423 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:41,781 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1153512935, now seen corresponding path program 150 times [2018-10-01 00:39:41,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:41,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:41,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:41,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:41,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-01 00:39:42,056 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:39:42,061 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:39:42,061 INFO L202 PluginConnector]: Adding new model down.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:39:42 BoogieIcfgContainer [2018-10-01 00:39:42,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:39:42,062 INFO L168 Benchmark]: Toolchain (without parser) took 767899.71 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -119.0 MB). Free memory was 1.5 GB in the beginning and 832.7 MB in the end (delta: 639.7 MB). Peak memory consumption was 520.7 MB. Max. memory is 7.1 GB. [2018-10-01 00:39:42,064 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-10-01 00:39:42,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.84 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. [2018-10-01 00:39:42,064 INFO L168 Benchmark]: Boogie Preprocessor took 23.43 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. [2018-10-01 00:39:42,065 INFO L168 Benchmark]: RCFGBuilder took 332.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-01 00:39:42,065 INFO L168 Benchmark]: TraceAbstraction took 767496.65 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -119.0 MB). Free memory was 1.5 GB in the beginning and 832.7 MB in the end (delta: 618.6 MB). Peak memory consumption was 499.6 MB. Max. memory is 7.1 GB. [2018-10-01 00:39:42,068 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 0.20 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 40.84 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 23.43 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 332.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 767496.65 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -119.0 MB). Free memory was 1.5 GB in the beginning and 832.7 MB in the end (delta: 618.6 MB). Peak memory consumption was 499.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 76). Cancelled while BasicCegarLoop was analyzing trace of length 384 with TraceHistMax 76, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 382 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 767.4s OverallTime, 154 OverallIterations, 76 TraceHistogramMax, 576.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6476 SDtfs, 14056 SDslu, 141316 SDs, 0 SdLazy, 155882 SolverSat, 3324 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 145.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43729 GetRequests, 32022 SyntacticMatches, 0 SemanticMatches, 11707 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 197.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=153, 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: 3.5s AutomataMinimizationTime, 153 MinimizatonAttempts, 306 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 3.3s SsaConstructionTime, 19.6s SatisfiabilityAnalysisTime, 153.7s InterpolantComputationTime, 58514 NumberOfCodeBlocks, 58514 NumberOfCodeBlocksAsserted, 3177 NumberOfCheckSat, 58212 ConstructedInterpolants, 0 QuantifiedInterpolants, 44013104 SizeOfPredicates, 299 NumberOfNonLiveVariables, 93350 ConjunctsInSsa, 11772 ConjunctsInUnsatCore, 302 InterpolantComputations, 4 PerfectInterpolantSequences, 742600/1440200 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/down.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-39-42-077.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/down.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-39-42-077.csv Completed graceful shutdown