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/nested1.i_4.bplTransformedIcfg_BEv2_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:38:52,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:38:52,024 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:38:52,036 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:38:52,036 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:38:52,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:38:52,042 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:38:52,045 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:38:52,047 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:38:52,049 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:38:52,056 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-30 20:38:52,056 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-30 20:38:52,057 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-30 20:38:52,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-30 20:38:52,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-30 20:38:52,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-30 20:38:52,067 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-30 20:38:52,068 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-30 20:38:52,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-30 20:38:52,076 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-30 20:38:52,077 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-30 20:38:52,080 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-30 20:38:52,082 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-30 20:38:52,085 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-30 20:38:52,085 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-30 20:38:52,086 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-30 20:38:52,087 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-30 20:38:52,089 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-30 20:38:52,091 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-30 20:38:52,092 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-30 20:38:52,093 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-30 20:38:52,095 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-30 20:38:52,095 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-30 20:38:52,096 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-30 20:38:52,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-30 20:38:52,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-30 20:38:52,099 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 [2018-09-30 20:38:52,127 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:38:52,127 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:38:52,128 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:38:52,129 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:38:52,129 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:38:52,129 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:38:52,131 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:38:52,131 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:38:52,131 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:38:52,131 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:38:52,131 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:38:52,131 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:38:52,132 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:38:52,132 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:38:52,132 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:38:52,132 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:38:52,134 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:38:52,134 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:38:52,134 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:38:52,134 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:38:52,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:38:52,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:38:52,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:38:52,135 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:38:52,135 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:38:52,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:38:52,136 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:38:52,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:38:52,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:38:52,136 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:38:52,136 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:38:52,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:38:52,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:38:52,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:38:52,206 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:38:52,206 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:38:52,207 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/nested1.i_4.bplTransformedIcfg_BEv2_12.bpl [2018-09-30 20:38:52,207 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/nested1.i_4.bplTransformedIcfg_BEv2_12.bpl' [2018-09-30 20:38:52,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:38:52,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:38:52,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:38:52,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:38:52,264 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:38:52,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:38:52,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:38:52,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:38:52,302 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:38:52,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/1) ... [2018-09-30 20:38:52,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:38:52,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:38:52,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:38:52,321 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:38:52,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (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 [2018-09-30 20:38:52,392 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-30 20:38:52,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 20:38:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 20:38:52,564 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 20:38:52,565 INFO L202 PluginConnector]: Adding new model nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:38:52 BoogieIcfgContainer [2018-09-30 20:38:52,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:38:52,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:38:52,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:38:52,569 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:38:52,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:38:52" (1/2) ... [2018-09-30 20:38:52,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c9478b and model type nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:38:52, skipping insertion in model container [2018-09-30 20:38:52,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:38:52" (2/2) ... [2018-09-30 20:38:52,573 INFO L112 eAbstractionObserver]: Analyzing ICFG nested1.i_4.bplTransformedIcfg_BEv2_12.bpl [2018-09-30 20:38:52,583 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:38:52,591 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:38:52,638 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:38:52,639 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:38:52,639 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:38:52,639 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:38:52,640 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:38:52,640 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:38:52,640 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:38:52,640 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:38:52,640 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:38:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-09-30 20:38:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 20:38:52,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:52,661 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 20:38:52,662 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:52,668 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-09-30 20:38:52,671 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:52,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:52,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:52,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:52,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:52,827 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:38:52,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:38:52,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:38:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:38:52,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:52,848 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-09-30 20:38:53,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:53,073 INFO L93 Difference]: Finished difference Result 11 states and 17 transitions. [2018-09-30 20:38:53,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:38:53,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 20:38:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:53,087 INFO L225 Difference]: With dead ends: 11 [2018-09-30 20:38:53,087 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 20:38:53,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 20:38:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-09-30 20:38:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-30 20:38:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-09-30 20:38:53,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 3 [2018-09-30 20:38:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:53,121 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-09-30 20:38:53,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:38:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions. [2018-09-30 20:38:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 20:38:53,122 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:53,122 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-30 20:38:53,123 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:53,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash 28854189, now seen corresponding path program 1 times [2018-09-30 20:38:53,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:53,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:53,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:53,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:53,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:53,160 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:38:53,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-30 20:38:53,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:38:53,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:38:53,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:53,163 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 3 states. [2018-09-30 20:38:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:53,206 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-09-30 20:38:53,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:38:53,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2018-09-30 20:38:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:53,207 INFO L225 Difference]: With dead ends: 11 [2018-09-30 20:38:53,207 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 20:38:53,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 20:38:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 20:38:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 20:38:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-09-30 20:38:53,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-09-30 20:38:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:53,211 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-09-30 20:38:53,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:38:53,211 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2018-09-30 20:38:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 20:38:53,212 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:53,212 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 20:38:53,212 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:53,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:53,213 INFO L82 PathProgramCache]: Analyzing trace with hash 894431694, now seen corresponding path program 1 times [2018-09-30 20:38:53,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:53,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:53,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:53,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:53,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:53,282 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:53,283 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 [2018-09-30 20:38:53,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:53,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:53,417 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:53,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 20:38:53,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:38:53,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:38:53,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:53,419 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand 4 states. [2018-09-30 20:38:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:53,692 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-09-30 20:38:53,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:38:53,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-30 20:38:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:53,694 INFO L225 Difference]: With dead ends: 13 [2018-09-30 20:38:53,694 INFO L226 Difference]: Without dead ends: 8 [2018-09-30 20:38:53,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:53,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-30 20:38:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-30 20:38:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-30 20:38:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-09-30 20:38:53,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-09-30 20:38:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:53,699 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-09-30 20:38:53,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:38:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2018-09-30 20:38:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 20:38:53,700 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:53,700 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-09-30 20:38:53,700 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:53,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:53,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1957530573, now seen corresponding path program 2 times [2018-09-30 20:38:53,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:53,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:53,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:53,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:53,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:38:53,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:53,808 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 [2018-09-30 20:38:53,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:53,843 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:53,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:53,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:38:54,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:54,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2018-09-30 20:38:54,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:38:54,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:38:54,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:54,071 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 7 states. [2018-09-30 20:38:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:54,548 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2018-09-30 20:38:54,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:38:54,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-30 20:38:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:54,550 INFO L225 Difference]: With dead ends: 24 [2018-09-30 20:38:54,551 INFO L226 Difference]: Without dead ends: 18 [2018-09-30 20:38:54,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-30 20:38:54,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-09-30 20:38:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 20:38:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-30 20:38:54,556 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2018-09-30 20:38:54,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:54,557 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-30 20:38:54,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:38:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-30 20:38:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 20:38:54,558 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:54,558 INFO L375 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1] [2018-09-30 20:38:54,558 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:54,559 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:54,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1143121891, now seen corresponding path program 3 times [2018-09-30 20:38:54,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:54,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:54,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:54,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:54,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-30 20:38:54,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:54,658 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 [2018-09-30 20:38:54,670 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:38:54,685 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-30 20:38:54,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:54,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-30 20:38:54,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:54,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:38:54,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:38:54,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:38:54,741 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:54,741 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2018-09-30 20:38:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:55,210 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2018-09-30 20:38:55,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:38:55,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-09-30 20:38:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:55,213 INFO L225 Difference]: With dead ends: 24 [2018-09-30 20:38:55,213 INFO L226 Difference]: Without dead ends: 16 [2018-09-30 20:38:55,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:38:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-30 20:38:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-30 20:38:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-30 20:38:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-09-30 20:38:55,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2018-09-30 20:38:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:55,222 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-09-30 20:38:55,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:38:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-09-30 20:38:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:38:55,223 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:55,223 INFO L375 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1] [2018-09-30 20:38:55,223 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:55,223 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:55,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1762706263, now seen corresponding path program 4 times [2018-09-30 20:38:55,223 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:55,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:55,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:55,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:55,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-30 20:38:55,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:55,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:38:55,319 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:38:55,334 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:38:55,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:55,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-30 20:38:55,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:55,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 10 [2018-09-30 20:38:55,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:38:55,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:38:55,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:55,420 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 10 states. [2018-09-30 20:38:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:55,998 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2018-09-30 20:38:56,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:38:56,000 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2018-09-30 20:38:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:56,001 INFO L225 Difference]: With dead ends: 40 [2018-09-30 20:38:56,001 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 20:38:56,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:38:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 20:38:56,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2018-09-30 20:38:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 20:38:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-09-30 20:38:56,008 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2018-09-30 20:38:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:56,009 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-09-30 20:38:56,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:38:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-09-30 20:38:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 20:38:56,010 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:56,010 INFO L375 BasicCegarLoop]: trace histogram [15, 3, 3, 1, 1, 1] [2018-09-30 20:38:56,010 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:56,011 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:56,011 INFO L82 PathProgramCache]: Analyzing trace with hash 198739950, now seen corresponding path program 5 times [2018-09-30 20:38:56,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:56,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:56,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-30 20:38:56,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:56,099 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 [2018-09-30 20:38:56,108 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:38:56,128 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-30 20:38:56,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:56,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-30 20:38:56,269 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:56,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 12 [2018-09-30 20:38:56,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:38:56,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:38:56,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:56,271 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 12 states. [2018-09-30 20:38:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:56,949 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-09-30 20:38:56,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 20:38:56,950 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-09-30 20:38:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:56,951 INFO L225 Difference]: With dead ends: 60 [2018-09-30 20:38:56,951 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 20:38:56,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:38:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 20:38:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2018-09-30 20:38:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-30 20:38:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-30 20:38:56,962 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2018-09-30 20:38:56,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:56,963 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-30 20:38:56,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:38:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-30 20:38:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-30 20:38:56,964 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:56,964 INFO L375 BasicCegarLoop]: trace histogram [24, 4, 4, 1, 1, 1] [2018-09-30 20:38:56,965 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:56,965 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1597467349, now seen corresponding path program 6 times [2018-09-30 20:38:56,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:56,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:56,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:56,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:56,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 151 proven. 21 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-30 20:38:57,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:57,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:38:57,109 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:38:57,160 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-09-30 20:38:57,160 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:57,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 251 proven. 21 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-30 20:38:57,221 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:57,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 20:38:57,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 20:38:57,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 20:38:57,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:57,224 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2018-09-30 20:38:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:57,301 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2018-09-30 20:38:57,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:38:57,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-09-30 20:38:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:57,303 INFO L225 Difference]: With dead ends: 67 [2018-09-30 20:38:57,303 INFO L226 Difference]: Without dead ends: 40 [2018-09-30 20:38:57,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:38:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-30 20:38:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-30 20:38:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-30 20:38:57,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-09-30 20:38:57,312 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 35 [2018-09-30 20:38:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:57,312 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-09-30 20:38:57,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 20:38:57,313 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-09-30 20:38:57,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-30 20:38:57,314 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:57,314 INFO L375 BasicCegarLoop]: trace histogram [28, 4, 4, 1, 1, 1] [2018-09-30 20:38:57,314 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:57,315 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:57,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1404785213, now seen corresponding path program 7 times [2018-09-30 20:38:57,315 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:57,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:57,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:57,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:38:57,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 394 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-30 20:38:57,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:57,477 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 [2018-09-30 20:38:57,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:57,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 196 proven. 28 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-09-30 20:38:57,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:57,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2018-09-30 20:38:57,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:38:57,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:38:57,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:57,652 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 15 states. [2018-09-30 20:38:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:38:58,995 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2018-09-30 20:38:58,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:38:58,995 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2018-09-30 20:38:58,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:38:58,996 INFO L225 Difference]: With dead ends: 93 [2018-09-30 20:38:58,996 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 20:38:58,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:38:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 20:38:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2018-09-30 20:38:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 20:38:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-09-30 20:38:59,009 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 39 [2018-09-30 20:38:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:38:59,009 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-09-30 20:38:59,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:38:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-09-30 20:38:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 20:38:59,011 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:38:59,011 INFO L375 BasicCegarLoop]: trace histogram [40, 5, 5, 1, 1, 1] [2018-09-30 20:38:59,012 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:38:59,012 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:38:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1154943019, now seen corresponding path program 8 times [2018-09-30 20:38:59,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:38:59,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:38:59,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:59,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:38:59,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:38:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:38:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 0 proven. 825 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-30 20:38:59,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:38:59,151 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 [2018-09-30 20:38:59,186 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:38:59,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:38:59,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:38:59,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:38:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 329 proven. 36 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2018-09-30 20:38:59,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:38:59,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 17 [2018-09-30 20:38:59,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:38:59,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:38:59,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:38:59,571 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 17 states. [2018-09-30 20:39:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:03,126 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2018-09-30 20:39:03,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:39:03,126 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2018-09-30 20:39:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:03,127 INFO L225 Difference]: With dead ends: 123 [2018-09-30 20:39:03,127 INFO L226 Difference]: Without dead ends: 80 [2018-09-30 20:39:03,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-09-30 20:39:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-09-30 20:39:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2018-09-30 20:39:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-30 20:39:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-09-30 20:39:03,143 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 53 [2018-09-30 20:39:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:03,143 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-09-30 20:39:03,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:39:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-09-30 20:39:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-30 20:39:03,146 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:03,146 INFO L375 BasicCegarLoop]: trace histogram [54, 6, 6, 1, 1, 1] [2018-09-30 20:39:03,146 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:03,146 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2076506525, now seen corresponding path program 9 times [2018-09-30 20:39:03,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:03,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:03,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:03,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:03,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1791 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-09-30 20:39:03,376 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:03,376 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:03,386 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:03,545 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-09-30 20:39:03,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:03,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1791 backedges. 506 proven. 45 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-09-30 20:39:03,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:03,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 19 [2018-09-30 20:39:03,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:39:03,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:39:03,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:03,722 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 19 states. [2018-09-30 20:39:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:05,652 INFO L93 Difference]: Finished difference Result 157 states and 179 transitions. [2018-09-30 20:39:05,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 20:39:05,653 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 69 [2018-09-30 20:39:05,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:05,654 INFO L225 Difference]: With dead ends: 157 [2018-09-30 20:39:05,654 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 20:39:05,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:39:05,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 20:39:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2018-09-30 20:39:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-30 20:39:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2018-09-30 20:39:05,669 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 69 [2018-09-30 20:39:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:05,670 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2018-09-30 20:39:05,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:39:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2018-09-30 20:39:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-30 20:39:05,671 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:05,671 INFO L375 BasicCegarLoop]: trace histogram [70, 7, 7, 1, 1, 1] [2018-09-30 20:39:05,672 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:05,672 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash -815084279, now seen corresponding path program 10 times [2018-09-30 20:39:05,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:05,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:05,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:05,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:05,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 0 proven. 2569 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-09-30 20:39:05,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:05,950 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 [2018-09-30 20:39:05,958 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:06,029 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:06,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:06,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 0 proven. 2569 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2018-09-30 20:39:06,425 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:06,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 20:39:06,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:39:06,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:39:06,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:06,426 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 10 states. [2018-09-30 20:39:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:06,550 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2018-09-30 20:39:06,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:39:06,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2018-09-30 20:39:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:06,554 INFO L225 Difference]: With dead ends: 113 [2018-09-30 20:39:06,554 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 20:39:06,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 20:39:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 100. [2018-09-30 20:39:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-09-30 20:39:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2018-09-30 20:39:06,573 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 87 [2018-09-30 20:39:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:06,574 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2018-09-30 20:39:06,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:39:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2018-09-30 20:39:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-09-30 20:39:06,575 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:06,575 INFO L375 BasicCegarLoop]: trace histogram [80, 8, 8, 1, 1, 1] [2018-09-30 20:39:06,576 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:06,576 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:06,576 INFO L82 PathProgramCache]: Analyzing trace with hash 558484307, now seen corresponding path program 11 times [2018-09-30 20:39:06,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:06,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:06,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:06,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:06,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3864 backedges. 0 proven. 3424 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-09-30 20:39:06,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:06,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:06,835 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:06,929 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-30 20:39:06,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:06,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3864 backedges. 0 proven. 3424 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-09-30 20:39:07,153 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:07,153 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 20:39:07,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 20:39:07,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 20:39:07,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:07,154 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand 11 states. [2018-09-30 20:39:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:07,333 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2018-09-30 20:39:07,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:39:07,333 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2018-09-30 20:39:07,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:07,334 INFO L225 Difference]: With dead ends: 125 [2018-09-30 20:39:07,334 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 20:39:07,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:39:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 20:39:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 112. [2018-09-30 20:39:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-09-30 20:39:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2018-09-30 20:39:07,357 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 99 [2018-09-30 20:39:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:07,357 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2018-09-30 20:39:07,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 20:39:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2018-09-30 20:39:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-30 20:39:07,359 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:07,359 INFO L375 BasicCegarLoop]: trace histogram [90, 9, 9, 1, 1, 1] [2018-09-30 20:39:07,360 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:07,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2005161315, now seen corresponding path program 12 times [2018-09-30 20:39:07,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:07,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:07,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:07,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:07,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4896 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2018-09-30 20:39:07,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:07,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:07,634 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:07,833 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2018-09-30 20:39:07,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:07,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4896 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2018-09-30 20:39:08,213 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:08,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 20:39:08,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:39:08,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:39:08,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:08,214 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand 12 states. [2018-09-30 20:39:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:08,563 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2018-09-30 20:39:08,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:39:08,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2018-09-30 20:39:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:08,567 INFO L225 Difference]: With dead ends: 137 [2018-09-30 20:39:08,567 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 20:39:08,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:39:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 20:39:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 124. [2018-09-30 20:39:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 20:39:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2018-09-30 20:39:08,603 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 111 [2018-09-30 20:39:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:08,605 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2018-09-30 20:39:08,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:39:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2018-09-30 20:39:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 20:39:08,612 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:08,612 INFO L375 BasicCegarLoop]: trace histogram [100, 10, 10, 1, 1, 1] [2018-09-30 20:39:08,612 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:08,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:08,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1028199705, now seen corresponding path program 13 times [2018-09-30 20:39:08,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:08,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:08,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:08,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:08,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5500 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-09-30 20:39:08,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:08,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:08,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:08,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5500 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-09-30 20:39:09,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:09,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 20:39:09,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:39:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:39:09,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:09,200 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 13 states. [2018-09-30 20:39:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:09,501 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2018-09-30 20:39:09,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:39:09,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2018-09-30 20:39:09,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:09,504 INFO L225 Difference]: With dead ends: 149 [2018-09-30 20:39:09,504 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 20:39:09,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 20:39:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 136. [2018-09-30 20:39:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-09-30 20:39:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2018-09-30 20:39:09,524 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 123 [2018-09-30 20:39:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:09,525 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2018-09-30 20:39:09,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:39:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2018-09-30 20:39:09,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-30 20:39:09,527 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:09,527 INFO L375 BasicCegarLoop]: trace histogram [110, 11, 11, 1, 1, 1] [2018-09-30 20:39:09,527 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:09,527 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:09,528 INFO L82 PathProgramCache]: Analyzing trace with hash 804391985, now seen corresponding path program 14 times [2018-09-30 20:39:09,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:09,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:09,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:09,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:09,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:09,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7326 backedges. 0 proven. 6721 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2018-09-30 20:39:09,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:09,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:09,716 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:09,792 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:09,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:09,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7326 backedges. 0 proven. 6721 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2018-09-30 20:39:10,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:10,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 20:39:10,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:39:10,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:39:10,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:10,092 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 14 states. [2018-09-30 20:39:10,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:10,249 INFO L93 Difference]: Finished difference Result 161 states and 174 transitions. [2018-09-30 20:39:10,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:39:10,249 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 135 [2018-09-30 20:39:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:10,250 INFO L225 Difference]: With dead ends: 161 [2018-09-30 20:39:10,251 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 20:39:10,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 20:39:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2018-09-30 20:39:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-09-30 20:39:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 160 transitions. [2018-09-30 20:39:10,276 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 160 transitions. Word has length 135 [2018-09-30 20:39:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:10,276 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 160 transitions. [2018-09-30 20:39:10,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:39:10,277 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 160 transitions. [2018-09-30 20:39:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-09-30 20:39:10,278 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:10,278 INFO L375 BasicCegarLoop]: trace histogram [120, 12, 12, 1, 1, 1] [2018-09-30 20:39:10,278 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:10,279 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1919127163, now seen corresponding path program 15 times [2018-09-30 20:39:10,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:10,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:10,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:10,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:10,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8724 backedges. 0 proven. 8064 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-09-30 20:39:11,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:11,011 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 [2018-09-30 20:39:11,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:11,185 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 73 check-sat command(s) [2018-09-30 20:39:11,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:11,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8724 backedges. 0 proven. 8064 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-09-30 20:39:11,459 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:11,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 20:39:11,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:39:11,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:39:11,460 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:11,460 INFO L87 Difference]: Start difference. First operand 148 states and 160 transitions. Second operand 15 states. [2018-09-30 20:39:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:11,644 INFO L93 Difference]: Finished difference Result 173 states and 187 transitions. [2018-09-30 20:39:11,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:39:11,644 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2018-09-30 20:39:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:11,645 INFO L225 Difference]: With dead ends: 173 [2018-09-30 20:39:11,645 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 20:39:11,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:39:11,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 20:39:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2018-09-30 20:39:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-09-30 20:39:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 173 transitions. [2018-09-30 20:39:11,672 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 173 transitions. Word has length 147 [2018-09-30 20:39:11,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:11,673 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 173 transitions. [2018-09-30 20:39:11,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:39:11,673 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 173 transitions. [2018-09-30 20:39:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-30 20:39:11,675 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:11,675 INFO L375 BasicCegarLoop]: trace histogram [130, 13, 13, 1, 1, 1] [2018-09-30 20:39:11,675 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:11,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 243397061, now seen corresponding path program 16 times [2018-09-30 20:39:11,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:11,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:11,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:11,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:11,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10244 backedges. 0 proven. 9529 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2018-09-30 20:39:11,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:11,953 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 [2018-09-30 20:39:11,960 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:12,065 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:12,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:12,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10244 backedges. 0 proven. 9529 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2018-09-30 20:39:12,347 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:12,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 20:39:12,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:39:12,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:39:12,347 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:12,348 INFO L87 Difference]: Start difference. First operand 160 states and 173 transitions. Second operand 16 states. [2018-09-30 20:39:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:12,532 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2018-09-30 20:39:12,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 20:39:12,533 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2018-09-30 20:39:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:12,534 INFO L225 Difference]: With dead ends: 185 [2018-09-30 20:39:12,534 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 20:39:12,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:39:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 20:39:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2018-09-30 20:39:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-09-30 20:39:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 186 transitions. [2018-09-30 20:39:12,562 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 186 transitions. Word has length 159 [2018-09-30 20:39:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:12,563 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 186 transitions. [2018-09-30 20:39:12,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:39:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 186 transitions. [2018-09-30 20:39:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-09-30 20:39:12,564 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:12,564 INFO L375 BasicCegarLoop]: trace histogram [140, 14, 14, 1, 1, 1] [2018-09-30 20:39:12,565 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:12,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash 184792591, now seen corresponding path program 17 times [2018-09-30 20:39:12,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:12,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:12,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:12,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:12,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 11886 backedges. 0 proven. 11116 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-09-30 20:39:13,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:13,635 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 [2018-09-30 20:39:13,652 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:13,859 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-09-30 20:39:13,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:13,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11886 backedges. 0 proven. 11116 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-09-30 20:39:14,201 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:14,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 20:39:14,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:39:14,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:39:14,202 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:14,202 INFO L87 Difference]: Start difference. First operand 172 states and 186 transitions. Second operand 17 states. [2018-09-30 20:39:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:14,429 INFO L93 Difference]: Finished difference Result 197 states and 213 transitions. [2018-09-30 20:39:14,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:39:14,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 171 [2018-09-30 20:39:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:14,431 INFO L225 Difference]: With dead ends: 197 [2018-09-30 20:39:14,431 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 20:39:14,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:39:14,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 20:39:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2018-09-30 20:39:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 20:39:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 199 transitions. [2018-09-30 20:39:14,462 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 199 transitions. Word has length 171 [2018-09-30 20:39:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:14,462 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 199 transitions. [2018-09-30 20:39:14,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:39:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 199 transitions. [2018-09-30 20:39:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-30 20:39:14,464 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:14,464 INFO L375 BasicCegarLoop]: trace histogram [150, 15, 15, 1, 1, 1] [2018-09-30 20:39:14,465 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:14,465 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:14,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1864410279, now seen corresponding path program 18 times [2018-09-30 20:39:14,465 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:14,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:14,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:14,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:14,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 12825 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2018-09-30 20:39:15,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:15,111 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:15,118 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:15,820 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-09-30 20:39:15,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:15,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13650 backedges. 0 proven. 12825 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2018-09-30 20:39:16,135 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:16,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 20:39:16,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:39:16,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:39:16,136 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:16,136 INFO L87 Difference]: Start difference. First operand 184 states and 199 transitions. Second operand 18 states. [2018-09-30 20:39:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:16,344 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2018-09-30 20:39:16,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 20:39:16,344 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 183 [2018-09-30 20:39:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:16,345 INFO L225 Difference]: With dead ends: 209 [2018-09-30 20:39:16,345 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 20:39:16,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 20:39:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 196. [2018-09-30 20:39:16,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-09-30 20:39:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 212 transitions. [2018-09-30 20:39:16,383 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 212 transitions. Word has length 183 [2018-09-30 20:39:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:16,384 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 212 transitions. [2018-09-30 20:39:16,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:39:16,384 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 212 transitions. [2018-09-30 20:39:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-30 20:39:16,385 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:16,385 INFO L375 BasicCegarLoop]: trace histogram [160, 16, 16, 1, 1, 1] [2018-09-30 20:39:16,385 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:16,385 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:16,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1957994077, now seen corresponding path program 19 times [2018-09-30 20:39:16,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:16,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:16,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:16,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:16,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15536 backedges. 0 proven. 14656 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-09-30 20:39:17,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:17,205 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 [2018-09-30 20:39:17,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:17,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 15536 backedges. 0 proven. 14656 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-09-30 20:39:17,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:17,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 20:39:17,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:39:17,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:39:17,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:17,761 INFO L87 Difference]: Start difference. First operand 196 states and 212 transitions. Second operand 19 states. [2018-09-30 20:39:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:17,988 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2018-09-30 20:39:17,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:39:17,989 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 195 [2018-09-30 20:39:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:17,990 INFO L225 Difference]: With dead ends: 221 [2018-09-30 20:39:17,990 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 20:39:17,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:39:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 20:39:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 208. [2018-09-30 20:39:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-09-30 20:39:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2018-09-30 20:39:18,028 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 195 [2018-09-30 20:39:18,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:18,029 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2018-09-30 20:39:18,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:39:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2018-09-30 20:39:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-09-30 20:39:18,030 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:18,030 INFO L375 BasicCegarLoop]: trace histogram [170, 17, 17, 1, 1, 1] [2018-09-30 20:39:18,030 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:18,030 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1203652845, now seen corresponding path program 20 times [2018-09-30 20:39:18,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:18,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:18,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:18,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:18,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17544 backedges. 0 proven. 16609 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2018-09-30 20:39:18,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:18,373 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:18,381 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:18,488 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:18,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:18,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 17544 backedges. 0 proven. 16609 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2018-09-30 20:39:19,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:19,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 20:39:19,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:39:19,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:39:19,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:19,119 INFO L87 Difference]: Start difference. First operand 208 states and 225 transitions. Second operand 20 states. [2018-09-30 20:39:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:19,356 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2018-09-30 20:39:19,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 20:39:19,358 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 207 [2018-09-30 20:39:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:19,360 INFO L225 Difference]: With dead ends: 233 [2018-09-30 20:39:19,360 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 20:39:19,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:39:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 20:39:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 220. [2018-09-30 20:39:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-09-30 20:39:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 238 transitions. [2018-09-30 20:39:19,408 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 238 transitions. Word has length 207 [2018-09-30 20:39:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:19,408 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 238 transitions. [2018-09-30 20:39:19,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:39:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 238 transitions. [2018-09-30 20:39:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-30 20:39:19,410 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:19,410 INFO L375 BasicCegarLoop]: trace histogram [180, 18, 18, 1, 1, 1] [2018-09-30 20:39:19,410 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:19,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash 367956279, now seen corresponding path program 21 times [2018-09-30 20:39:19,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:19,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:19,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:19,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:19,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 19674 backedges. 0 proven. 18684 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-09-30 20:39:20,067 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:20,067 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 [2018-09-30 20:39:20,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:20,347 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 109 check-sat command(s) [2018-09-30 20:39:20,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:20,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 19674 backedges. 0 proven. 18684 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-09-30 20:39:20,839 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:20,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 20:39:20,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:39:20,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:39:20,840 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:20,841 INFO L87 Difference]: Start difference. First operand 220 states and 238 transitions. Second operand 21 states. [2018-09-30 20:39:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:21,084 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2018-09-30 20:39:21,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 20:39:21,084 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 219 [2018-09-30 20:39:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:21,085 INFO L225 Difference]: With dead ends: 245 [2018-09-30 20:39:21,086 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 20:39:21,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 20:39:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 232. [2018-09-30 20:39:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-09-30 20:39:21,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 251 transitions. [2018-09-30 20:39:21,133 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 251 transitions. Word has length 219 [2018-09-30 20:39:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:21,133 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 251 transitions. [2018-09-30 20:39:21,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:39:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 251 transitions. [2018-09-30 20:39:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-09-30 20:39:21,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:21,135 INFO L375 BasicCegarLoop]: trace histogram [190, 19, 19, 1, 1, 1] [2018-09-30 20:39:21,135 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:21,135 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash -405620095, now seen corresponding path program 22 times [2018-09-30 20:39:21,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:21,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:21,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:21,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:21,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21926 backedges. 0 proven. 20881 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2018-09-30 20:39:22,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:22,095 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 [2018-09-30 20:39:22,103 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:22,239 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:22,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:22,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21926 backedges. 0 proven. 20881 refuted. 0 times theorem prover too weak. 1045 trivial. 0 not checked. [2018-09-30 20:39:22,656 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:22,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 20:39:22,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 20:39:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 20:39:22,657 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:22,657 INFO L87 Difference]: Start difference. First operand 232 states and 251 transitions. Second operand 22 states. [2018-09-30 20:39:22,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:22,886 INFO L93 Difference]: Finished difference Result 257 states and 278 transitions. [2018-09-30 20:39:22,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:39:22,893 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 231 [2018-09-30 20:39:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:22,894 INFO L225 Difference]: With dead ends: 257 [2018-09-30 20:39:22,894 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 20:39:22,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:39:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 20:39:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 244. [2018-09-30 20:39:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-09-30 20:39:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 264 transitions. [2018-09-30 20:39:22,970 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 264 transitions. Word has length 231 [2018-09-30 20:39:22,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:22,970 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 264 transitions. [2018-09-30 20:39:22,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 20:39:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 264 transitions. [2018-09-30 20:39:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-30 20:39:22,972 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:22,972 INFO L375 BasicCegarLoop]: trace histogram [200, 20, 20, 1, 1, 1] [2018-09-30 20:39:22,972 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:22,972 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:22,972 INFO L82 PathProgramCache]: Analyzing trace with hash -241089333, now seen corresponding path program 23 times [2018-09-30 20:39:22,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:22,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:22,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:22,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:22,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 24300 backedges. 0 proven. 23200 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2018-09-30 20:39:23,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:23,664 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:23,671 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:23,962 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 121 check-sat command(s) [2018-09-30 20:39:23,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:23,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24300 backedges. 0 proven. 23200 refuted. 0 times theorem prover too weak. 1100 trivial. 0 not checked. [2018-09-30 20:39:24,398 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:24,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 20:39:24,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 20:39:24,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 20:39:24,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:24,399 INFO L87 Difference]: Start difference. First operand 244 states and 264 transitions. Second operand 23 states. [2018-09-30 20:39:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:24,664 INFO L93 Difference]: Finished difference Result 269 states and 291 transitions. [2018-09-30 20:39:24,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 20:39:24,667 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 243 [2018-09-30 20:39:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:24,669 INFO L225 Difference]: With dead ends: 269 [2018-09-30 20:39:24,669 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 20:39:24,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 20:39:24,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 256. [2018-09-30 20:39:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-09-30 20:39:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 277 transitions. [2018-09-30 20:39:24,728 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 277 transitions. Word has length 243 [2018-09-30 20:39:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:24,728 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 277 transitions. [2018-09-30 20:39:24,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 20:39:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 277 transitions. [2018-09-30 20:39:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-09-30 20:39:24,729 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:24,729 INFO L375 BasicCegarLoop]: trace histogram [210, 21, 21, 1, 1, 1] [2018-09-30 20:39:24,730 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:24,730 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:24,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1238413333, now seen corresponding path program 24 times [2018-09-30 20:39:24,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:24,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:24,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:24,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:24,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 25641 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2018-09-30 20:39:25,767 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:25,767 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 [2018-09-30 20:39:25,774 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:26,090 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 123 check-sat command(s) [2018-09-30 20:39:26,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:26,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 25641 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2018-09-30 20:39:26,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:26,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 20:39:26,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 20:39:26,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 20:39:26,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:26,622 INFO L87 Difference]: Start difference. First operand 256 states and 277 transitions. Second operand 24 states. [2018-09-30 20:39:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:27,384 INFO L93 Difference]: Finished difference Result 281 states and 304 transitions. [2018-09-30 20:39:27,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:39:27,384 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 255 [2018-09-30 20:39:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:27,385 INFO L225 Difference]: With dead ends: 281 [2018-09-30 20:39:27,385 INFO L226 Difference]: Without dead ends: 279 [2018-09-30 20:39:27,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:39:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-30 20:39:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 268. [2018-09-30 20:39:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-09-30 20:39:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 290 transitions. [2018-09-30 20:39:27,455 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 290 transitions. Word has length 255 [2018-09-30 20:39:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:27,456 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 290 transitions. [2018-09-30 20:39:27,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 20:39:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 290 transitions. [2018-09-30 20:39:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-30 20:39:27,457 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:27,458 INFO L375 BasicCegarLoop]: trace histogram [220, 22, 22, 1, 1, 1] [2018-09-30 20:39:27,458 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:27,458 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:27,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1994949537, now seen corresponding path program 25 times [2018-09-30 20:39:27,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:27,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:27,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:27,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:27,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2018-09-30 20:39:28,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:28,053 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 [2018-09-30 20:39:28,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:28,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2018-09-30 20:39:30,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:30,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 20:39:30,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 20:39:30,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 20:39:30,021 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:30,021 INFO L87 Difference]: Start difference. First operand 268 states and 290 transitions. Second operand 25 states. [2018-09-30 20:39:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:30,279 INFO L93 Difference]: Finished difference Result 293 states and 317 transitions. [2018-09-30 20:39:30,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 20:39:30,279 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 267 [2018-09-30 20:39:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:30,281 INFO L225 Difference]: With dead ends: 293 [2018-09-30 20:39:30,281 INFO L226 Difference]: Without dead ends: 291 [2018-09-30 20:39:30,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-09-30 20:39:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-30 20:39:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 280. [2018-09-30 20:39:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-09-30 20:39:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 303 transitions. [2018-09-30 20:39:30,373 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 303 transitions. Word has length 267 [2018-09-30 20:39:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:30,373 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 303 transitions. [2018-09-30 20:39:30,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 20:39:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 303 transitions. [2018-09-30 20:39:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-09-30 20:39:30,375 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:30,375 INFO L375 BasicCegarLoop]: trace histogram [230, 23, 23, 1, 1, 1] [2018-09-30 20:39:30,376 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:30,376 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1785473449, now seen corresponding path program 26 times [2018-09-30 20:39:30,376 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:30,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:30,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:30,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:30,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 32154 backedges. 0 proven. 30889 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2018-09-30 20:39:31,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:31,099 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 [2018-09-30 20:39:31,107 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:31,252 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:31,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:31,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 32154 backedges. 0 proven. 30889 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2018-09-30 20:39:32,384 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:32,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 20:39:32,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 20:39:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 20:39:32,385 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:32,385 INFO L87 Difference]: Start difference. First operand 280 states and 303 transitions. Second operand 26 states. [2018-09-30 20:39:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:32,855 INFO L93 Difference]: Finished difference Result 305 states and 330 transitions. [2018-09-30 20:39:32,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 20:39:32,858 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 279 [2018-09-30 20:39:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:32,860 INFO L225 Difference]: With dead ends: 305 [2018-09-30 20:39:32,860 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 20:39:32,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:39:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 20:39:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 292. [2018-09-30 20:39:32,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-09-30 20:39:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 316 transitions. [2018-09-30 20:39:32,942 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 316 transitions. Word has length 279 [2018-09-30 20:39:32,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:32,942 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 316 transitions. [2018-09-30 20:39:32,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 20:39:32,942 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 316 transitions. [2018-09-30 20:39:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-30 20:39:32,943 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:32,943 INFO L375 BasicCegarLoop]: trace histogram [240, 24, 24, 1, 1, 1] [2018-09-30 20:39:32,944 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:32,944 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1795504115, now seen corresponding path program 27 times [2018-09-30 20:39:32,944 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:32,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:32,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:32,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 35016 backedges. 0 proven. 33696 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2018-09-30 20:39:34,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:34,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:34,102 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:34,666 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 145 check-sat command(s) [2018-09-30 20:39:34,666 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:34,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 35016 backedges. 0 proven. 33696 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2018-09-30 20:39:35,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:35,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 20:39:35,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 20:39:35,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 20:39:35,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:35,274 INFO L87 Difference]: Start difference. First operand 292 states and 316 transitions. Second operand 27 states. [2018-09-30 20:39:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:35,639 INFO L93 Difference]: Finished difference Result 317 states and 343 transitions. [2018-09-30 20:39:35,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:39:35,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 291 [2018-09-30 20:39:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:35,641 INFO L225 Difference]: With dead ends: 317 [2018-09-30 20:39:35,641 INFO L226 Difference]: Without dead ends: 315 [2018-09-30 20:39:35,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:39:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-30 20:39:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 304. [2018-09-30 20:39:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-09-30 20:39:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 329 transitions. [2018-09-30 20:39:35,759 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 329 transitions. Word has length 291 [2018-09-30 20:39:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:35,760 INFO L480 AbstractCegarLoop]: Abstraction has 304 states and 329 transitions. [2018-09-30 20:39:35,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 20:39:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 329 transitions. [2018-09-30 20:39:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-30 20:39:35,761 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:35,762 INFO L375 BasicCegarLoop]: trace histogram [250, 25, 25, 1, 1, 1] [2018-09-30 20:39:35,762 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:35,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:35,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1784227645, now seen corresponding path program 28 times [2018-09-30 20:39:35,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:35,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:35,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:35,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38000 backedges. 0 proven. 36625 refuted. 0 times theorem prover too weak. 1375 trivial. 0 not checked. [2018-09-30 20:39:36,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:36,384 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 [2018-09-30 20:39:36,392 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:36,542 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:36,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:36,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 38000 backedges. 0 proven. 36625 refuted. 0 times theorem prover too weak. 1375 trivial. 0 not checked. [2018-09-30 20:39:37,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:37,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 20:39:37,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 20:39:37,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 20:39:37,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:37,227 INFO L87 Difference]: Start difference. First operand 304 states and 329 transitions. Second operand 28 states. [2018-09-30 20:39:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:37,628 INFO L93 Difference]: Finished difference Result 329 states and 356 transitions. [2018-09-30 20:39:37,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 20:39:37,628 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 303 [2018-09-30 20:39:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:37,630 INFO L225 Difference]: With dead ends: 329 [2018-09-30 20:39:37,630 INFO L226 Difference]: Without dead ends: 327 [2018-09-30 20:39:37,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:39:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-30 20:39:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 316. [2018-09-30 20:39:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-09-30 20:39:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 342 transitions. [2018-09-30 20:39:37,739 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 342 transitions. Word has length 303 [2018-09-30 20:39:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:37,740 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 342 transitions. [2018-09-30 20:39:37,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 20:39:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 342 transitions. [2018-09-30 20:39:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-09-30 20:39:37,742 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:37,743 INFO L375 BasicCegarLoop]: trace histogram [260, 26, 26, 1, 1, 1] [2018-09-30 20:39:37,743 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:37,743 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:37,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1243510663, now seen corresponding path program 29 times [2018-09-30 20:39:37,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:37,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:37,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:37,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 41106 backedges. 0 proven. 39676 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-09-30 20:39:38,568 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:38,568 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:38,577 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:38,993 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 157 check-sat command(s) [2018-09-30 20:39:38,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:38,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 41106 backedges. 0 proven. 39676 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-09-30 20:39:39,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:39,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 20:39:39,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 20:39:39,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 20:39:39,771 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:39,772 INFO L87 Difference]: Start difference. First operand 316 states and 342 transitions. Second operand 29 states. [2018-09-30 20:39:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:40,165 INFO L93 Difference]: Finished difference Result 341 states and 369 transitions. [2018-09-30 20:39:40,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:39:40,165 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 315 [2018-09-30 20:39:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:40,167 INFO L225 Difference]: With dead ends: 341 [2018-09-30 20:39:40,167 INFO L226 Difference]: Without dead ends: 339 [2018-09-30 20:39:40,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:39:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-30 20:39:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 328. [2018-09-30 20:39:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-09-30 20:39:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 355 transitions. [2018-09-30 20:39:40,262 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 355 transitions. Word has length 315 [2018-09-30 20:39:40,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:40,262 INFO L480 AbstractCegarLoop]: Abstraction has 328 states and 355 transitions. [2018-09-30 20:39:40,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 20:39:40,262 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 355 transitions. [2018-09-30 20:39:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-09-30 20:39:40,263 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:40,264 INFO L375 BasicCegarLoop]: trace histogram [270, 27, 27, 1, 1, 1] [2018-09-30 20:39:40,264 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:40,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1907644207, now seen corresponding path program 30 times [2018-09-30 20:39:40,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:40,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:40,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:40,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:40,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 44334 backedges. 0 proven. 42849 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-09-30 20:39:41,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:41,903 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 [2018-09-30 20:39:41,910 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:42,357 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 158 check-sat command(s) [2018-09-30 20:39:42,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:42,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 44334 backedges. 0 proven. 42849 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2018-09-30 20:39:43,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:43,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 20:39:43,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 20:39:43,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 20:39:43,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:43,231 INFO L87 Difference]: Start difference. First operand 328 states and 355 transitions. Second operand 30 states. [2018-09-30 20:39:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:43,720 INFO L93 Difference]: Finished difference Result 353 states and 382 transitions. [2018-09-30 20:39:43,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 20:39:43,720 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 327 [2018-09-30 20:39:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:43,722 INFO L225 Difference]: With dead ends: 353 [2018-09-30 20:39:43,722 INFO L226 Difference]: Without dead ends: 351 [2018-09-30 20:39:43,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-09-30 20:39:43,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-30 20:39:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 340. [2018-09-30 20:39:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-09-30 20:39:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 368 transitions. [2018-09-30 20:39:43,832 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 368 transitions. Word has length 327 [2018-09-30 20:39:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:43,832 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 368 transitions. [2018-09-30 20:39:43,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 20:39:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 368 transitions. [2018-09-30 20:39:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-09-30 20:39:43,834 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:43,835 INFO L375 BasicCegarLoop]: trace histogram [280, 28, 28, 1, 1, 1] [2018-09-30 20:39:43,835 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:43,835 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash -48809189, now seen corresponding path program 31 times [2018-09-30 20:39:43,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:43,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:43,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 47684 backedges. 0 proven. 46144 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2018-09-30 20:39:44,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:44,484 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 [2018-09-30 20:39:44,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:44,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 47684 backedges. 0 proven. 46144 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2018-09-30 20:39:45,992 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:45,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 20:39:45,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 20:39:45,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 20:39:45,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:45,993 INFO L87 Difference]: Start difference. First operand 340 states and 368 transitions. Second operand 31 states. [2018-09-30 20:39:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:46,443 INFO L93 Difference]: Finished difference Result 365 states and 395 transitions. [2018-09-30 20:39:46,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 20:39:46,443 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 339 [2018-09-30 20:39:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:46,445 INFO L225 Difference]: With dead ends: 365 [2018-09-30 20:39:46,445 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 20:39:46,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:39:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 20:39:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 352. [2018-09-30 20:39:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-09-30 20:39:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 381 transitions. [2018-09-30 20:39:46,582 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 381 transitions. Word has length 339 [2018-09-30 20:39:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:46,582 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 381 transitions. [2018-09-30 20:39:46,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 20:39:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 381 transitions. [2018-09-30 20:39:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-09-30 20:39:46,584 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:46,585 INFO L375 BasicCegarLoop]: trace histogram [290, 29, 29, 1, 1, 1] [2018-09-30 20:39:46,585 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:46,585 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1056419429, now seen corresponding path program 32 times [2018-09-30 20:39:46,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:46,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:46,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:46,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:39:46,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 51156 backedges. 0 proven. 49561 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2018-09-30 20:39:47,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:47,884 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 [2018-09-30 20:39:47,891 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:39:48,076 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:39:48,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:48,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 51156 backedges. 0 proven. 49561 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2018-09-30 20:39:48,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:48,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 20:39:48,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 20:39:48,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 20:39:48,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:48,761 INFO L87 Difference]: Start difference. First operand 352 states and 381 transitions. Second operand 32 states. [2018-09-30 20:39:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:49,185 INFO L93 Difference]: Finished difference Result 377 states and 408 transitions. [2018-09-30 20:39:49,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 20:39:49,186 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 351 [2018-09-30 20:39:49,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:49,187 INFO L225 Difference]: With dead ends: 377 [2018-09-30 20:39:49,187 INFO L226 Difference]: Without dead ends: 375 [2018-09-30 20:39:49,188 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:39:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-30 20:39:49,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 364. [2018-09-30 20:39:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-09-30 20:39:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 394 transitions. [2018-09-30 20:39:49,314 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 394 transitions. Word has length 351 [2018-09-30 20:39:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:49,314 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 394 transitions. [2018-09-30 20:39:49,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 20:39:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 394 transitions. [2018-09-30 20:39:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-30 20:39:49,316 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:49,317 INFO L375 BasicCegarLoop]: trace histogram [300, 30, 30, 1, 1, 1] [2018-09-30 20:39:49,317 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:49,317 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2124645039, now seen corresponding path program 33 times [2018-09-30 20:39:49,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:49,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:49,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 54750 backedges. 0 proven. 53100 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-09-30 20:39:49,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:49,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:49,778 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:39:50,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 181 check-sat command(s) [2018-09-30 20:39:50,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:50,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 54750 backedges. 0 proven. 53100 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-09-30 20:39:51,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:51,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 20:39:51,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 20:39:51,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 20:39:51,251 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:51,251 INFO L87 Difference]: Start difference. First operand 364 states and 394 transitions. Second operand 33 states. [2018-09-30 20:39:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:51,765 INFO L93 Difference]: Finished difference Result 389 states and 421 transitions. [2018-09-30 20:39:51,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 20:39:51,765 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 363 [2018-09-30 20:39:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:51,767 INFO L225 Difference]: With dead ends: 389 [2018-09-30 20:39:51,767 INFO L226 Difference]: Without dead ends: 387 [2018-09-30 20:39:51,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:39:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-30 20:39:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 376. [2018-09-30 20:39:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-09-30 20:39:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 407 transitions. [2018-09-30 20:39:51,904 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 407 transitions. Word has length 363 [2018-09-30 20:39:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:51,904 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 407 transitions. [2018-09-30 20:39:51,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 20:39:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 407 transitions. [2018-09-30 20:39:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-09-30 20:39:51,906 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:51,906 INFO L375 BasicCegarLoop]: trace histogram [310, 31, 31, 1, 1, 1] [2018-09-30 20:39:51,906 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:51,906 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 152123385, now seen corresponding path program 34 times [2018-09-30 20:39:51,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:51,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:51,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:51,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:51,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 58466 backedges. 0 proven. 56761 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2018-09-30 20:39:52,533 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:52,533 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 [2018-09-30 20:39:52,540 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:39:52,746 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:39:52,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:52,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 58466 backedges. 0 proven. 56761 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2018-09-30 20:39:53,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:53,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 20:39:53,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 20:39:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 20:39:53,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:53,420 INFO L87 Difference]: Start difference. First operand 376 states and 407 transitions. Second operand 34 states. [2018-09-30 20:39:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:53,929 INFO L93 Difference]: Finished difference Result 401 states and 434 transitions. [2018-09-30 20:39:53,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 20:39:53,929 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 375 [2018-09-30 20:39:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:53,931 INFO L225 Difference]: With dead ends: 401 [2018-09-30 20:39:53,931 INFO L226 Difference]: Without dead ends: 399 [2018-09-30 20:39:53,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:39:53,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-30 20:39:54,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 388. [2018-09-30 20:39:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-09-30 20:39:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 420 transitions. [2018-09-30 20:39:54,074 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 420 transitions. Word has length 375 [2018-09-30 20:39:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:54,074 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 420 transitions. [2018-09-30 20:39:54,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 20:39:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 420 transitions. [2018-09-30 20:39:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-30 20:39:54,077 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:54,077 INFO L375 BasicCegarLoop]: trace histogram [320, 32, 32, 1, 1, 1] [2018-09-30 20:39:54,077 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:54,077 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:54,078 INFO L82 PathProgramCache]: Analyzing trace with hash -310948285, now seen corresponding path program 35 times [2018-09-30 20:39:54,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:54,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:54,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:54,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:54,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 62304 backedges. 0 proven. 60544 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2018-09-30 20:39:54,973 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:54,973 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:39:54,980 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:39:55,620 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 193 check-sat command(s) [2018-09-30 20:39:55,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:55,627 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 62304 backedges. 0 proven. 60544 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2018-09-30 20:39:56,363 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:56,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 20:39:56,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 20:39:56,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 20:39:56,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:56,364 INFO L87 Difference]: Start difference. First operand 388 states and 420 transitions. Second operand 35 states. [2018-09-30 20:39:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:56,895 INFO L93 Difference]: Finished difference Result 413 states and 447 transitions. [2018-09-30 20:39:56,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 20:39:56,896 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 387 [2018-09-30 20:39:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:56,897 INFO L225 Difference]: With dead ends: 413 [2018-09-30 20:39:56,897 INFO L226 Difference]: Without dead ends: 411 [2018-09-30 20:39:56,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:39:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-30 20:39:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 400. [2018-09-30 20:39:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-09-30 20:39:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 433 transitions. [2018-09-30 20:39:57,044 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 433 transitions. Word has length 387 [2018-09-30 20:39:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:57,044 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 433 transitions. [2018-09-30 20:39:57,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 20:39:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 433 transitions. [2018-09-30 20:39:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-09-30 20:39:57,047 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:57,047 INFO L375 BasicCegarLoop]: trace histogram [330, 33, 33, 1, 1, 1] [2018-09-30 20:39:57,047 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:57,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1655945843, now seen corresponding path program 36 times [2018-09-30 20:39:57,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:57,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:57,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:57,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:57,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:39:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 66264 backedges. 0 proven. 64449 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2018-09-30 20:39:57,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:39:57,725 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 [2018-09-30 20:39:57,732 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:39:58,368 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 195 check-sat command(s) [2018-09-30 20:39:58,369 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:39:58,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:39:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 66264 backedges. 0 proven. 64449 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2018-09-30 20:39:59,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:39:59,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 20:39:59,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 20:39:59,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 20:39:59,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:39:59,140 INFO L87 Difference]: Start difference. First operand 400 states and 433 transitions. Second operand 36 states. [2018-09-30 20:39:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:39:59,704 INFO L93 Difference]: Finished difference Result 425 states and 460 transitions. [2018-09-30 20:39:59,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 20:39:59,705 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 399 [2018-09-30 20:39:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:39:59,707 INFO L225 Difference]: With dead ends: 425 [2018-09-30 20:39:59,707 INFO L226 Difference]: Without dead ends: 423 [2018-09-30 20:39:59,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:39:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-30 20:39:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 412. [2018-09-30 20:39:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-09-30 20:39:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 446 transitions. [2018-09-30 20:39:59,869 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 446 transitions. Word has length 399 [2018-09-30 20:39:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:39:59,869 INFO L480 AbstractCegarLoop]: Abstraction has 412 states and 446 transitions. [2018-09-30 20:39:59,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 20:39:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 446 transitions. [2018-09-30 20:39:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-30 20:39:59,872 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:39:59,872 INFO L375 BasicCegarLoop]: trace histogram [340, 34, 34, 1, 1, 1] [2018-09-30 20:39:59,872 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:39:59,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:39:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1941529129, now seen corresponding path program 37 times [2018-09-30 20:39:59,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:39:59,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:39:59,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:59,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:39:59,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:39:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 70346 backedges. 0 proven. 68476 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2018-09-30 20:40:00,582 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:00,582 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 [2018-09-30 20:40:00,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:00,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 70346 backedges. 0 proven. 68476 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2018-09-30 20:40:01,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:01,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 20:40:01,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 20:40:01,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 20:40:01,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:01,550 INFO L87 Difference]: Start difference. First operand 412 states and 446 transitions. Second operand 37 states. [2018-09-30 20:40:02,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:02,122 INFO L93 Difference]: Finished difference Result 437 states and 473 transitions. [2018-09-30 20:40:02,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:40:02,122 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 411 [2018-09-30 20:40:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:02,124 INFO L225 Difference]: With dead ends: 437 [2018-09-30 20:40:02,124 INFO L226 Difference]: Without dead ends: 435 [2018-09-30 20:40:02,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-30 20:40:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 424. [2018-09-30 20:40:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-09-30 20:40:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 459 transitions. [2018-09-30 20:40:02,288 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 459 transitions. Word has length 411 [2018-09-30 20:40:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:02,289 INFO L480 AbstractCegarLoop]: Abstraction has 424 states and 459 transitions. [2018-09-30 20:40:02,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 20:40:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 459 transitions. [2018-09-30 20:40:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-09-30 20:40:02,291 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:02,291 INFO L375 BasicCegarLoop]: trace histogram [350, 35, 35, 1, 1, 1] [2018-09-30 20:40:02,292 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:02,292 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:02,292 INFO L82 PathProgramCache]: Analyzing trace with hash -799221983, now seen corresponding path program 38 times [2018-09-30 20:40:02,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:02,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:02,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:02,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:02,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 74550 backedges. 0 proven. 72625 refuted. 0 times theorem prover too weak. 1925 trivial. 0 not checked. [2018-09-30 20:40:02,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:02,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:02,978 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:03,207 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:03,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:03,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 74550 backedges. 0 proven. 72625 refuted. 0 times theorem prover too weak. 1925 trivial. 0 not checked. [2018-09-30 20:40:04,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:04,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 20:40:04,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 20:40:04,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 20:40:04,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:04,544 INFO L87 Difference]: Start difference. First operand 424 states and 459 transitions. Second operand 38 states. [2018-09-30 20:40:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:05,247 INFO L93 Difference]: Finished difference Result 449 states and 486 transitions. [2018-09-30 20:40:05,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 20:40:05,248 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 423 [2018-09-30 20:40:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:05,249 INFO L225 Difference]: With dead ends: 449 [2018-09-30 20:40:05,250 INFO L226 Difference]: Without dead ends: 447 [2018-09-30 20:40:05,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:40:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-09-30 20:40:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 436. [2018-09-30 20:40:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-09-30 20:40:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 472 transitions. [2018-09-30 20:40:05,416 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 472 transitions. Word has length 423 [2018-09-30 20:40:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:05,417 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 472 transitions. [2018-09-30 20:40:05,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 20:40:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 472 transitions. [2018-09-30 20:40:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-09-30 20:40:05,419 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:05,420 INFO L375 BasicCegarLoop]: trace histogram [360, 36, 36, 1, 1, 1] [2018-09-30 20:40:05,420 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:05,420 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:05,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1044024981, now seen corresponding path program 39 times [2018-09-30 20:40:05,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:05,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:05,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:05,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:05,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 78876 backedges. 0 proven. 76896 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-09-30 20:40:06,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:06,004 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 [2018-09-30 20:40:06,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:06,771 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 217 check-sat command(s) [2018-09-30 20:40:06,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:06,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 78876 backedges. 0 proven. 76896 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2018-09-30 20:40:07,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:07,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 20:40:07,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 20:40:07,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 20:40:07,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:07,538 INFO L87 Difference]: Start difference. First operand 436 states and 472 transitions. Second operand 39 states. [2018-09-30 20:40:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:08,139 INFO L93 Difference]: Finished difference Result 461 states and 499 transitions. [2018-09-30 20:40:08,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 20:40:08,140 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 435 [2018-09-30 20:40:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:08,142 INFO L225 Difference]: With dead ends: 461 [2018-09-30 20:40:08,142 INFO L226 Difference]: Without dead ends: 459 [2018-09-30 20:40:08,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-09-30 20:40:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 448. [2018-09-30 20:40:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2018-09-30 20:40:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 485 transitions. [2018-09-30 20:40:08,323 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 485 transitions. Word has length 435 [2018-09-30 20:40:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:08,324 INFO L480 AbstractCegarLoop]: Abstraction has 448 states and 485 transitions. [2018-09-30 20:40:08,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 20:40:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 485 transitions. [2018-09-30 20:40:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-09-30 20:40:08,326 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:08,326 INFO L375 BasicCegarLoop]: trace histogram [370, 37, 37, 1, 1, 1] [2018-09-30 20:40:08,326 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:08,326 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:08,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1695093579, now seen corresponding path program 40 times [2018-09-30 20:40:08,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:08,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:08,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:08,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:08,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 83324 backedges. 0 proven. 81289 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-09-30 20:40:09,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:09,177 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 [2018-09-30 20:40:09,184 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:09,420 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:09,420 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:09,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 83324 backedges. 0 proven. 81289 refuted. 0 times theorem prover too weak. 2035 trivial. 0 not checked. [2018-09-30 20:40:10,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:10,496 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 20:40:10,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 20:40:10,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 20:40:10,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:10,497 INFO L87 Difference]: Start difference. First operand 448 states and 485 transitions. Second operand 40 states. [2018-09-30 20:40:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:11,131 INFO L93 Difference]: Finished difference Result 473 states and 512 transitions. [2018-09-30 20:40:11,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:40:11,132 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 447 [2018-09-30 20:40:11,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:11,133 INFO L225 Difference]: With dead ends: 473 [2018-09-30 20:40:11,134 INFO L226 Difference]: Without dead ends: 471 [2018-09-30 20:40:11,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:40:11,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-09-30 20:40:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 460. [2018-09-30 20:40:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-09-30 20:40:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 498 transitions. [2018-09-30 20:40:11,334 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 498 transitions. Word has length 447 [2018-09-30 20:40:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:11,335 INFO L480 AbstractCegarLoop]: Abstraction has 460 states and 498 transitions. [2018-09-30 20:40:11,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 20:40:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 498 transitions. [2018-09-30 20:40:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-09-30 20:40:11,337 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:11,338 INFO L375 BasicCegarLoop]: trace histogram [380, 38, 38, 1, 1, 1] [2018-09-30 20:40:11,338 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:11,338 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:11,338 INFO L82 PathProgramCache]: Analyzing trace with hash 413649151, now seen corresponding path program 41 times [2018-09-30 20:40:11,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:11,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:11,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:11,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:11,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 87894 backedges. 0 proven. 85804 refuted. 0 times theorem prover too weak. 2090 trivial. 0 not checked. [2018-09-30 20:40:11,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:11,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:11,946 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:12,782 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 229 check-sat command(s) [2018-09-30 20:40:12,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:12,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 87894 backedges. 0 proven. 85804 refuted. 0 times theorem prover too weak. 2090 trivial. 0 not checked. [2018-09-30 20:40:13,633 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:13,634 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 20:40:13,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 20:40:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 20:40:13,635 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:13,635 INFO L87 Difference]: Start difference. First operand 460 states and 498 transitions. Second operand 41 states. [2018-09-30 20:40:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:14,440 INFO L93 Difference]: Finished difference Result 485 states and 525 transitions. [2018-09-30 20:40:14,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 20:40:14,440 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 459 [2018-09-30 20:40:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:14,442 INFO L225 Difference]: With dead ends: 485 [2018-09-30 20:40:14,442 INFO L226 Difference]: Without dead ends: 483 [2018-09-30 20:40:14,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-09-30 20:40:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 472. [2018-09-30 20:40:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-09-30 20:40:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 511 transitions. [2018-09-30 20:40:14,654 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 511 transitions. Word has length 459 [2018-09-30 20:40:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:14,654 INFO L480 AbstractCegarLoop]: Abstraction has 472 states and 511 transitions. [2018-09-30 20:40:14,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 20:40:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 511 transitions. [2018-09-30 20:40:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2018-09-30 20:40:14,656 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:14,656 INFO L375 BasicCegarLoop]: trace histogram [390, 39, 39, 1, 1, 1] [2018-09-30 20:40:14,657 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:14,657 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash 432965193, now seen corresponding path program 42 times [2018-09-30 20:40:14,657 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:14,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:14,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:14,658 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:14,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 92586 backedges. 0 proven. 90441 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2018-09-30 20:40:15,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:15,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:15,505 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:16,356 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 230 check-sat command(s) [2018-09-30 20:40:16,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:16,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 92586 backedges. 0 proven. 90441 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2018-09-30 20:40:17,260 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:17,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 20:40:17,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 20:40:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 20:40:17,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:17,262 INFO L87 Difference]: Start difference. First operand 472 states and 511 transitions. Second operand 42 states. [2018-09-30 20:40:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:17,942 INFO L93 Difference]: Finished difference Result 497 states and 538 transitions. [2018-09-30 20:40:17,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 20:40:17,942 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 471 [2018-09-30 20:40:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:17,944 INFO L225 Difference]: With dead ends: 497 [2018-09-30 20:40:17,944 INFO L226 Difference]: Without dead ends: 495 [2018-09-30 20:40:17,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:40:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-30 20:40:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 484. [2018-09-30 20:40:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-09-30 20:40:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 524 transitions. [2018-09-30 20:40:18,146 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 524 transitions. Word has length 471 [2018-09-30 20:40:18,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:18,146 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 524 transitions. [2018-09-30 20:40:18,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 20:40:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 524 transitions. [2018-09-30 20:40:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-09-30 20:40:18,148 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:18,149 INFO L375 BasicCegarLoop]: trace histogram [400, 40, 40, 1, 1, 1] [2018-09-30 20:40:18,149 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:18,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:18,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1067558035, now seen corresponding path program 43 times [2018-09-30 20:40:18,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:18,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:18,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:18,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:18,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 97400 backedges. 0 proven. 95200 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2018-09-30 20:40:19,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:19,320 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 [2018-09-30 20:40:19,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:19,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 97400 backedges. 0 proven. 95200 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2018-09-30 20:40:20,740 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:20,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 20:40:20,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 20:40:20,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 20:40:20,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:20,742 INFO L87 Difference]: Start difference. First operand 484 states and 524 transitions. Second operand 43 states. [2018-09-30 20:40:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:21,442 INFO L93 Difference]: Finished difference Result 509 states and 551 transitions. [2018-09-30 20:40:21,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:40:21,442 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 483 [2018-09-30 20:40:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:21,444 INFO L225 Difference]: With dead ends: 509 [2018-09-30 20:40:21,444 INFO L226 Difference]: Without dead ends: 507 [2018-09-30 20:40:21,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:40:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-09-30 20:40:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 496. [2018-09-30 20:40:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2018-09-30 20:40:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 537 transitions. [2018-09-30 20:40:21,661 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 537 transitions. Word has length 483 [2018-09-30 20:40:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:21,662 INFO L480 AbstractCegarLoop]: Abstraction has 496 states and 537 transitions. [2018-09-30 20:40:21,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 20:40:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 537 transitions. [2018-09-30 20:40:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-09-30 20:40:21,664 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:21,664 INFO L375 BasicCegarLoop]: trace histogram [410, 41, 41, 1, 1, 1] [2018-09-30 20:40:21,664 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:21,664 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1919441955, now seen corresponding path program 44 times [2018-09-30 20:40:21,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:21,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:21,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:21,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:21,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 102336 backedges. 0 proven. 100081 refuted. 0 times theorem prover too weak. 2255 trivial. 0 not checked. [2018-09-30 20:40:22,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:22,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:22,232 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:22,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:22,492 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:22,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 102336 backedges. 0 proven. 100081 refuted. 0 times theorem prover too weak. 2255 trivial. 0 not checked. [2018-09-30 20:40:23,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:23,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 20:40:23,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 20:40:23,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 20:40:23,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:23,412 INFO L87 Difference]: Start difference. First operand 496 states and 537 transitions. Second operand 44 states. [2018-09-30 20:40:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:24,117 INFO L93 Difference]: Finished difference Result 521 states and 564 transitions. [2018-09-30 20:40:24,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 20:40:24,118 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 495 [2018-09-30 20:40:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:24,120 INFO L225 Difference]: With dead ends: 521 [2018-09-30 20:40:24,120 INFO L226 Difference]: Without dead ends: 519 [2018-09-30 20:40:24,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-09-30 20:40:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 508. [2018-09-30 20:40:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-09-30 20:40:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 550 transitions. [2018-09-30 20:40:24,349 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 550 transitions. Word has length 495 [2018-09-30 20:40:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:24,349 INFO L480 AbstractCegarLoop]: Abstraction has 508 states and 550 transitions. [2018-09-30 20:40:24,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 20:40:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 550 transitions. [2018-09-30 20:40:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-09-30 20:40:24,351 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:24,351 INFO L375 BasicCegarLoop]: trace histogram [420, 42, 42, 1, 1, 1] [2018-09-30 20:40:24,351 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:24,351 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash 157746215, now seen corresponding path program 45 times [2018-09-30 20:40:24,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:24,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:24,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:24,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:24,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:24,863 INFO L134 CoverageAnalysis]: Checked inductivity of 107394 backedges. 0 proven. 105084 refuted. 0 times theorem prover too weak. 2310 trivial. 0 not checked. [2018-09-30 20:40:24,864 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:24,864 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 [2018-09-30 20:40:24,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:26,023 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 253 check-sat command(s) [2018-09-30 20:40:26,023 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:26,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 107394 backedges. 0 proven. 105084 refuted. 0 times theorem prover too weak. 2310 trivial. 0 not checked. [2018-09-30 20:40:26,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:26,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 20:40:26,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 20:40:26,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 20:40:26,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:26,946 INFO L87 Difference]: Start difference. First operand 508 states and 550 transitions. Second operand 45 states. [2018-09-30 20:40:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:28,024 INFO L93 Difference]: Finished difference Result 533 states and 577 transitions. [2018-09-30 20:40:28,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:40:28,025 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 507 [2018-09-30 20:40:28,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:28,027 INFO L225 Difference]: With dead ends: 533 [2018-09-30 20:40:28,027 INFO L226 Difference]: Without dead ends: 531 [2018-09-30 20:40:28,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:28,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-09-30 20:40:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 520. [2018-09-30 20:40:28,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-09-30 20:40:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 563 transitions. [2018-09-30 20:40:28,303 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 563 transitions. Word has length 507 [2018-09-30 20:40:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:28,303 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 563 transitions. [2018-09-30 20:40:28,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 20:40:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 563 transitions. [2018-09-30 20:40:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-09-30 20:40:28,305 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:28,306 INFO L375 BasicCegarLoop]: trace histogram [430, 43, 43, 1, 1, 1] [2018-09-30 20:40:28,306 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:28,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1527137649, now seen corresponding path program 46 times [2018-09-30 20:40:28,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:28,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:28,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:28,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:28,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 112574 backedges. 0 proven. 110209 refuted. 0 times theorem prover too weak. 2365 trivial. 0 not checked. [2018-09-30 20:40:28,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:28,810 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 [2018-09-30 20:40:28,819 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:29,103 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:29,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:29,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 112574 backedges. 0 proven. 110209 refuted. 0 times theorem prover too weak. 2365 trivial. 0 not checked. [2018-09-30 20:40:30,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:30,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 20:40:30,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 20:40:30,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 20:40:30,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:30,130 INFO L87 Difference]: Start difference. First operand 520 states and 563 transitions. Second operand 46 states. [2018-09-30 20:40:31,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:31,195 INFO L93 Difference]: Finished difference Result 545 states and 590 transitions. [2018-09-30 20:40:31,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 20:40:31,201 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 519 [2018-09-30 20:40:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:31,203 INFO L225 Difference]: With dead ends: 545 [2018-09-30 20:40:31,203 INFO L226 Difference]: Without dead ends: 543 [2018-09-30 20:40:31,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-09-30 20:40:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-09-30 20:40:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 532. [2018-09-30 20:40:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-09-30 20:40:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 576 transitions. [2018-09-30 20:40:31,475 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 576 transitions. Word has length 519 [2018-09-30 20:40:31,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:31,475 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 576 transitions. [2018-09-30 20:40:31,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 20:40:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 576 transitions. [2018-09-30 20:40:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-09-30 20:40:31,478 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:31,478 INFO L375 BasicCegarLoop]: trace histogram [440, 44, 44, 1, 1, 1] [2018-09-30 20:40:31,478 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:31,478 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:31,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1823205307, now seen corresponding path program 47 times [2018-09-30 20:40:31,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:31,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:31,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:31,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:31,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 117876 backedges. 0 proven. 115456 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2018-09-30 20:40:32,015 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:32,015 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 [2018-09-30 20:40:32,021 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:33,104 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 265 check-sat command(s) [2018-09-30 20:40:33,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:33,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 117876 backedges. 0 proven. 115456 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2018-09-30 20:40:34,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:34,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 20:40:34,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 20:40:34,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 20:40:34,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:34,060 INFO L87 Difference]: Start difference. First operand 532 states and 576 transitions. Second operand 47 states. [2018-09-30 20:40:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:34,896 INFO L93 Difference]: Finished difference Result 557 states and 603 transitions. [2018-09-30 20:40:34,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:40:34,896 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 531 [2018-09-30 20:40:34,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:34,898 INFO L225 Difference]: With dead ends: 557 [2018-09-30 20:40:34,898 INFO L226 Difference]: Without dead ends: 555 [2018-09-30 20:40:34,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-09-30 20:40:35,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 544. [2018-09-30 20:40:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2018-09-30 20:40:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 589 transitions. [2018-09-30 20:40:35,187 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 589 transitions. Word has length 531 [2018-09-30 20:40:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:35,187 INFO L480 AbstractCegarLoop]: Abstraction has 544 states and 589 transitions. [2018-09-30 20:40:35,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 20:40:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 589 transitions. [2018-09-30 20:40:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2018-09-30 20:40:35,189 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:35,190 INFO L375 BasicCegarLoop]: trace histogram [450, 45, 45, 1, 1, 1] [2018-09-30 20:40:35,190 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:35,190 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash 181299973, now seen corresponding path program 48 times [2018-09-30 20:40:35,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:35,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:35,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:35,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:35,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 123300 backedges. 0 proven. 120825 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2018-09-30 20:40:36,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:36,007 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 [2018-09-30 20:40:36,014 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:40:37,152 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 267 check-sat command(s) [2018-09-30 20:40:37,153 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:37,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 123300 backedges. 0 proven. 120825 refuted. 0 times theorem prover too weak. 2475 trivial. 0 not checked. [2018-09-30 20:40:38,207 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:38,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 20:40:38,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 20:40:38,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 20:40:38,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:38,208 INFO L87 Difference]: Start difference. First operand 544 states and 589 transitions. Second operand 48 states. [2018-09-30 20:40:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:39,051 INFO L93 Difference]: Finished difference Result 569 states and 616 transitions. [2018-09-30 20:40:39,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:40:39,052 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 543 [2018-09-30 20:40:39,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:39,054 INFO L225 Difference]: With dead ends: 569 [2018-09-30 20:40:39,054 INFO L226 Difference]: Without dead ends: 567 [2018-09-30 20:40:39,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:40:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-09-30 20:40:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 556. [2018-09-30 20:40:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2018-09-30 20:40:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 602 transitions. [2018-09-30 20:40:39,340 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 602 transitions. Word has length 543 [2018-09-30 20:40:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:39,341 INFO L480 AbstractCegarLoop]: Abstraction has 556 states and 602 transitions. [2018-09-30 20:40:39,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 20:40:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 602 transitions. [2018-09-30 20:40:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-09-30 20:40:39,343 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:39,343 INFO L375 BasicCegarLoop]: trace histogram [460, 46, 46, 1, 1, 1] [2018-09-30 20:40:39,344 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:39,344 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:39,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2077995185, now seen corresponding path program 49 times [2018-09-30 20:40:39,344 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:39,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:39,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:39,345 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:39,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 0 proven. 126316 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2018-09-30 20:40:40,010 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:40,010 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 [2018-09-30 20:40:40,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:40,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 0 proven. 126316 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2018-09-30 20:40:41,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:41,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 20:40:41,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 20:40:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 20:40:41,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:41,620 INFO L87 Difference]: Start difference. First operand 556 states and 602 transitions. Second operand 49 states. [2018-09-30 20:40:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:42,452 INFO L93 Difference]: Finished difference Result 581 states and 629 transitions. [2018-09-30 20:40:42,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:40:42,453 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 555 [2018-09-30 20:40:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:42,455 INFO L225 Difference]: With dead ends: 581 [2018-09-30 20:40:42,455 INFO L226 Difference]: Without dead ends: 579 [2018-09-30 20:40:42,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:40:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2018-09-30 20:40:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 568. [2018-09-30 20:40:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2018-09-30 20:40:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 615 transitions. [2018-09-30 20:40:42,758 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 615 transitions. Word has length 555 [2018-09-30 20:40:42,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:42,759 INFO L480 AbstractCegarLoop]: Abstraction has 568 states and 615 transitions. [2018-09-30 20:40:42,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 20:40:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 615 transitions. [2018-09-30 20:40:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-09-30 20:40:42,762 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:42,762 INFO L375 BasicCegarLoop]: trace histogram [470, 47, 47, 1, 1, 1] [2018-09-30 20:40:42,762 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:42,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1235489945, now seen corresponding path program 50 times [2018-09-30 20:40:42,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:42,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:42,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:42,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:40:42,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2018-09-30 20:40:43,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:43,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:43,405 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:40:43,704 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:40:43,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:43,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2018-09-30 20:40:44,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:44,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 20:40:44,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 20:40:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 20:40:44,777 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:44,777 INFO L87 Difference]: Start difference. First operand 568 states and 615 transitions. Second operand 50 states. [2018-09-30 20:40:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:45,683 INFO L93 Difference]: Finished difference Result 593 states and 642 transitions. [2018-09-30 20:40:45,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 20:40:45,683 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 567 [2018-09-30 20:40:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:45,685 INFO L225 Difference]: With dead ends: 593 [2018-09-30 20:40:45,686 INFO L226 Difference]: Without dead ends: 591 [2018-09-30 20:40:45,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-09-30 20:40:45,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-09-30 20:40:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 580. [2018-09-30 20:40:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2018-09-30 20:40:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 628 transitions. [2018-09-30 20:40:46,002 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 628 transitions. Word has length 567 [2018-09-30 20:40:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:46,002 INFO L480 AbstractCegarLoop]: Abstraction has 580 states and 628 transitions. [2018-09-30 20:40:46,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 20:40:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 628 transitions. [2018-09-30 20:40:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-09-30 20:40:46,005 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:46,005 INFO L375 BasicCegarLoop]: trace histogram [480, 48, 48, 1, 1, 1] [2018-09-30 20:40:46,005 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:46,005 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:46,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1903936797, now seen corresponding path program 51 times [2018-09-30 20:40:46,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:46,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:46,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:46,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:46,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 140304 backedges. 0 proven. 137664 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-09-30 20:40:46,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:46,606 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 [2018-09-30 20:40:46,617 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:40:47,959 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 289 check-sat command(s) [2018-09-30 20:40:47,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:47,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 140304 backedges. 0 proven. 137664 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2018-09-30 20:40:49,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:49,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 20:40:49,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 20:40:49,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 20:40:49,089 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:49,089 INFO L87 Difference]: Start difference. First operand 580 states and 628 transitions. Second operand 51 states. [2018-09-30 20:40:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:50,043 INFO L93 Difference]: Finished difference Result 605 states and 655 transitions. [2018-09-30 20:40:50,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 20:40:50,043 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 579 [2018-09-30 20:40:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:50,045 INFO L225 Difference]: With dead ends: 605 [2018-09-30 20:40:50,045 INFO L226 Difference]: Without dead ends: 603 [2018-09-30 20:40:50,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:40:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2018-09-30 20:40:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 592. [2018-09-30 20:40:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2018-09-30 20:40:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 641 transitions. [2018-09-30 20:40:50,374 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 641 transitions. Word has length 579 [2018-09-30 20:40:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:50,374 INFO L480 AbstractCegarLoop]: Abstraction has 592 states and 641 transitions. [2018-09-30 20:40:50,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 20:40:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 641 transitions. [2018-09-30 20:40:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2018-09-30 20:40:50,377 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:50,377 INFO L375 BasicCegarLoop]: trace histogram [490, 49, 49, 1, 1, 1] [2018-09-30 20:40:50,377 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:50,377 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:50,377 INFO L82 PathProgramCache]: Analyzing trace with hash -398769619, now seen corresponding path program 52 times [2018-09-30 20:40:50,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:50,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:50,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:50,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:50,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 146216 backedges. 0 proven. 143521 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2018-09-30 20:40:51,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:51,106 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:51,113 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:40:51,433 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:40:51,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:51,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 146216 backedges. 0 proven. 143521 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2018-09-30 20:40:52,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:52,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 20:40:52,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 20:40:52,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 20:40:52,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:52,571 INFO L87 Difference]: Start difference. First operand 592 states and 641 transitions. Second operand 52 states. [2018-09-30 20:40:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:53,550 INFO L93 Difference]: Finished difference Result 617 states and 668 transitions. [2018-09-30 20:40:53,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 20:40:53,550 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 591 [2018-09-30 20:40:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:53,553 INFO L225 Difference]: With dead ends: 617 [2018-09-30 20:40:53,553 INFO L226 Difference]: Without dead ends: 615 [2018-09-30 20:40:53,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:40:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2018-09-30 20:40:53,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 604. [2018-09-30 20:40:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2018-09-30 20:40:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 654 transitions. [2018-09-30 20:40:53,902 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 654 transitions. Word has length 591 [2018-09-30 20:40:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:53,902 INFO L480 AbstractCegarLoop]: Abstraction has 604 states and 654 transitions. [2018-09-30 20:40:53,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 20:40:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 654 transitions. [2018-09-30 20:40:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-09-30 20:40:53,905 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:53,905 INFO L375 BasicCegarLoop]: trace histogram [500, 50, 50, 1, 1, 1] [2018-09-30 20:40:53,906 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:53,906 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:53,906 INFO L82 PathProgramCache]: Analyzing trace with hash -293623177, now seen corresponding path program 53 times [2018-09-30 20:40:53,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:53,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:53,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:53,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:53,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 152250 backedges. 0 proven. 149500 refuted. 0 times theorem prover too weak. 2750 trivial. 0 not checked. [2018-09-30 20:40:54,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:54,693 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:40:54,701 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:40:56,055 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 301 check-sat command(s) [2018-09-30 20:40:56,055 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:40:56,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:40:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 152250 backedges. 0 proven. 149500 refuted. 0 times theorem prover too weak. 2750 trivial. 0 not checked. [2018-09-30 20:40:57,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:40:57,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 20:40:57,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 20:40:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 20:40:57,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:40:57,477 INFO L87 Difference]: Start difference. First operand 604 states and 654 transitions. Second operand 53 states. [2018-09-30 20:40:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:40:58,463 INFO L93 Difference]: Finished difference Result 629 states and 681 transitions. [2018-09-30 20:40:58,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 20:40:58,463 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 603 [2018-09-30 20:40:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:40:58,465 INFO L225 Difference]: With dead ends: 629 [2018-09-30 20:40:58,466 INFO L226 Difference]: Without dead ends: 627 [2018-09-30 20:40:58,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:40:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2018-09-30 20:40:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 616. [2018-09-30 20:40:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2018-09-30 20:40:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 667 transitions. [2018-09-30 20:40:58,827 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 667 transitions. Word has length 603 [2018-09-30 20:40:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:40:58,827 INFO L480 AbstractCegarLoop]: Abstraction has 616 states and 667 transitions. [2018-09-30 20:40:58,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 20:40:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 667 transitions. [2018-09-30 20:40:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-09-30 20:40:58,830 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:40:58,830 INFO L375 BasicCegarLoop]: trace histogram [510, 51, 51, 1, 1, 1] [2018-09-30 20:40:58,831 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:40:58,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:40:58,831 INFO L82 PathProgramCache]: Analyzing trace with hash -616041535, now seen corresponding path program 54 times [2018-09-30 20:40:58,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:40:58,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:40:58,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:58,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:40:58,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:40:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:40:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 158406 backedges. 0 proven. 155601 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2018-09-30 20:40:59,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:40:59,474 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 [2018-09-30 20:40:59,481 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:00,901 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 302 check-sat command(s) [2018-09-30 20:41:00,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:00,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 158406 backedges. 0 proven. 155601 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2018-09-30 20:41:02,330 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:02,331 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 20:41:02,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 20:41:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 20:41:02,332 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:02,332 INFO L87 Difference]: Start difference. First operand 616 states and 667 transitions. Second operand 54 states. [2018-09-30 20:41:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:03,345 INFO L93 Difference]: Finished difference Result 641 states and 694 transitions. [2018-09-30 20:41:03,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 20:41:03,346 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 615 [2018-09-30 20:41:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:03,348 INFO L225 Difference]: With dead ends: 641 [2018-09-30 20:41:03,348 INFO L226 Difference]: Without dead ends: 639 [2018-09-30 20:41:03,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:41:03,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-09-30 20:41:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 628. [2018-09-30 20:41:03,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2018-09-30 20:41:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 680 transitions. [2018-09-30 20:41:03,724 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 680 transitions. Word has length 615 [2018-09-30 20:41:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:03,725 INFO L480 AbstractCegarLoop]: Abstraction has 628 states and 680 transitions. [2018-09-30 20:41:03,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 20:41:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 680 transitions. [2018-09-30 20:41:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-09-30 20:41:03,727 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:03,728 INFO L375 BasicCegarLoop]: trace histogram [520, 52, 52, 1, 1, 1] [2018-09-30 20:41:03,728 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:03,728 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:03,728 INFO L82 PathProgramCache]: Analyzing trace with hash 717921803, now seen corresponding path program 55 times [2018-09-30 20:41:03,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:03,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:03,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:03,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:03,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 164684 backedges. 0 proven. 161824 refuted. 0 times theorem prover too weak. 2860 trivial. 0 not checked. [2018-09-30 20:41:04,421 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:04,421 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 [2018-09-30 20:41:04,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:04,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 164684 backedges. 0 proven. 161824 refuted. 0 times theorem prover too weak. 2860 trivial. 0 not checked. [2018-09-30 20:41:05,991 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:05,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 20:41:05,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 20:41:05,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 20:41:05,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:05,993 INFO L87 Difference]: Start difference. First operand 628 states and 680 transitions. Second operand 55 states. [2018-09-30 20:41:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:07,165 INFO L93 Difference]: Finished difference Result 653 states and 707 transitions. [2018-09-30 20:41:07,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:41:07,165 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 627 [2018-09-30 20:41:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:07,168 INFO L225 Difference]: With dead ends: 653 [2018-09-30 20:41:07,168 INFO L226 Difference]: Without dead ends: 651 [2018-09-30 20:41:07,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-09-30 20:41:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 640. [2018-09-30 20:41:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-09-30 20:41:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 693 transitions. [2018-09-30 20:41:07,560 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 693 transitions. Word has length 627 [2018-09-30 20:41:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:07,560 INFO L480 AbstractCegarLoop]: Abstraction has 640 states and 693 transitions. [2018-09-30 20:41:07,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 20:41:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 693 transitions. [2018-09-30 20:41:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2018-09-30 20:41:07,563 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:07,563 INFO L375 BasicCegarLoop]: trace histogram [530, 53, 53, 1, 1, 1] [2018-09-30 20:41:07,564 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:07,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash 998123861, now seen corresponding path program 56 times [2018-09-30 20:41:07,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:07,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:07,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:07,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:07,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 171084 backedges. 0 proven. 168169 refuted. 0 times theorem prover too weak. 2915 trivial. 0 not checked. [2018-09-30 20:41:08,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:08,264 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 [2018-09-30 20:41:08,273 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:08,612 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:08,613 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:08,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 171084 backedges. 0 proven. 168169 refuted. 0 times theorem prover too weak. 2915 trivial. 0 not checked. [2018-09-30 20:41:09,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:09,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 20:41:09,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 20:41:09,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 20:41:09,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:09,871 INFO L87 Difference]: Start difference. First operand 640 states and 693 transitions. Second operand 56 states. [2018-09-30 20:41:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:11,024 INFO L93 Difference]: Finished difference Result 665 states and 720 transitions. [2018-09-30 20:41:11,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 20:41:11,024 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 639 [2018-09-30 20:41:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:11,026 INFO L225 Difference]: With dead ends: 665 [2018-09-30 20:41:11,026 INFO L226 Difference]: Without dead ends: 663 [2018-09-30 20:41:11,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:41:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2018-09-30 20:41:11,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 652. [2018-09-30 20:41:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2018-09-30 20:41:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 706 transitions. [2018-09-30 20:41:11,436 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 706 transitions. Word has length 639 [2018-09-30 20:41:11,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:11,437 INFO L480 AbstractCegarLoop]: Abstraction has 652 states and 706 transitions. [2018-09-30 20:41:11,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 20:41:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 706 transitions. [2018-09-30 20:41:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2018-09-30 20:41:11,439 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:11,440 INFO L375 BasicCegarLoop]: trace histogram [540, 54, 54, 1, 1, 1] [2018-09-30 20:41:11,440 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:11,440 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:11,440 INFO L82 PathProgramCache]: Analyzing trace with hash -300345953, now seen corresponding path program 57 times [2018-09-30 20:41:11,440 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:11,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:11,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:11,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:11,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 177606 backedges. 0 proven. 174636 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-09-30 20:41:12,193 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:12,193 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 [2018-09-30 20:41:12,201 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:13,808 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 325 check-sat command(s) [2018-09-30 20:41:13,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:13,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 177606 backedges. 0 proven. 174636 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-09-30 20:41:15,063 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:15,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 20:41:15,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 20:41:15,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 20:41:15,064 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:15,064 INFO L87 Difference]: Start difference. First operand 652 states and 706 transitions. Second operand 57 states. [2018-09-30 20:41:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:16,204 INFO L93 Difference]: Finished difference Result 677 states and 733 transitions. [2018-09-30 20:41:16,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 20:41:16,205 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 651 [2018-09-30 20:41:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:16,207 INFO L225 Difference]: With dead ends: 677 [2018-09-30 20:41:16,207 INFO L226 Difference]: Without dead ends: 675 [2018-09-30 20:41:16,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:41:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-09-30 20:41:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 664. [2018-09-30 20:41:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2018-09-30 20:41:16,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 719 transitions. [2018-09-30 20:41:16,634 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 719 transitions. Word has length 651 [2018-09-30 20:41:16,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:16,635 INFO L480 AbstractCegarLoop]: Abstraction has 664 states and 719 transitions. [2018-09-30 20:41:16,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 20:41:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 719 transitions. [2018-09-30 20:41:16,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-09-30 20:41:16,638 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:16,638 INFO L375 BasicCegarLoop]: trace histogram [550, 55, 55, 1, 1, 1] [2018-09-30 20:41:16,638 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:16,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:16,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1167188713, now seen corresponding path program 58 times [2018-09-30 20:41:16,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:16,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:16,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:16,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:16,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 184250 backedges. 0 proven. 181225 refuted. 0 times theorem prover too weak. 3025 trivial. 0 not checked. [2018-09-30 20:41:17,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:17,402 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 [2018-09-30 20:41:17,412 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:17,771 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:17,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:17,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 184250 backedges. 0 proven. 181225 refuted. 0 times theorem prover too weak. 3025 trivial. 0 not checked. [2018-09-30 20:41:19,101 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:19,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 20:41:19,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 20:41:19,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 20:41:19,102 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:19,102 INFO L87 Difference]: Start difference. First operand 664 states and 719 transitions. Second operand 58 states. [2018-09-30 20:41:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:20,210 INFO L93 Difference]: Finished difference Result 689 states and 746 transitions. [2018-09-30 20:41:20,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 20:41:20,211 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 663 [2018-09-30 20:41:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:20,213 INFO L225 Difference]: With dead ends: 689 [2018-09-30 20:41:20,213 INFO L226 Difference]: Without dead ends: 687 [2018-09-30 20:41:20,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:41:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2018-09-30 20:41:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 676. [2018-09-30 20:41:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-09-30 20:41:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 732 transitions. [2018-09-30 20:41:20,657 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 732 transitions. Word has length 663 [2018-09-30 20:41:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:20,657 INFO L480 AbstractCegarLoop]: Abstraction has 676 states and 732 transitions. [2018-09-30 20:41:20,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 20:41:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 732 transitions. [2018-09-30 20:41:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2018-09-30 20:41:20,660 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:20,661 INFO L375 BasicCegarLoop]: trace histogram [560, 56, 56, 1, 1, 1] [2018-09-30 20:41:20,661 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:20,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash 119476531, now seen corresponding path program 59 times [2018-09-30 20:41:20,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:20,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:20,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:20,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:20,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 191016 backedges. 0 proven. 187936 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-09-30 20:41:21,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:21,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:41:21,416 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:23,189 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 337 check-sat command(s) [2018-09-30 20:41:23,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:23,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 191016 backedges. 0 proven. 187936 refuted. 0 times theorem prover too weak. 3080 trivial. 0 not checked. [2018-09-30 20:41:24,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:24,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 20:41:24,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 20:41:24,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 20:41:24,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:24,555 INFO L87 Difference]: Start difference. First operand 676 states and 732 transitions. Second operand 59 states. [2018-09-30 20:41:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:25,799 INFO L93 Difference]: Finished difference Result 701 states and 759 transitions. [2018-09-30 20:41:25,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:41:25,799 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 675 [2018-09-30 20:41:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:25,801 INFO L225 Difference]: With dead ends: 701 [2018-09-30 20:41:25,801 INFO L226 Difference]: Without dead ends: 699 [2018-09-30 20:41:25,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:41:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-09-30 20:41:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 688. [2018-09-30 20:41:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2018-09-30 20:41:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 745 transitions. [2018-09-30 20:41:26,263 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 745 transitions. Word has length 675 [2018-09-30 20:41:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:26,263 INFO L480 AbstractCegarLoop]: Abstraction has 688 states and 745 transitions. [2018-09-30 20:41:26,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 20:41:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 745 transitions. [2018-09-30 20:41:26,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2018-09-30 20:41:26,267 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:26,267 INFO L375 BasicCegarLoop]: trace histogram [570, 57, 57, 1, 1, 1] [2018-09-30 20:41:26,267 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:26,267 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1513562237, now seen corresponding path program 60 times [2018-09-30 20:41:26,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:26,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:26,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:26,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:26,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 197904 backedges. 0 proven. 194769 refuted. 0 times theorem prover too weak. 3135 trivial. 0 not checked. [2018-09-30 20:41:27,256 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:27,256 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:41:27,264 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:41:29,080 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 339 check-sat command(s) [2018-09-30 20:41:29,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:29,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 197904 backedges. 0 proven. 194769 refuted. 0 times theorem prover too weak. 3135 trivial. 0 not checked. [2018-09-30 20:41:30,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:30,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 20:41:30,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 20:41:30,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 20:41:30,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:30,443 INFO L87 Difference]: Start difference. First operand 688 states and 745 transitions. Second operand 60 states. [2018-09-30 20:41:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:31,750 INFO L93 Difference]: Finished difference Result 713 states and 772 transitions. [2018-09-30 20:41:31,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 20:41:31,751 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 687 [2018-09-30 20:41:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:31,753 INFO L225 Difference]: With dead ends: 713 [2018-09-30 20:41:31,753 INFO L226 Difference]: Without dead ends: 711 [2018-09-30 20:41:31,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:41:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-09-30 20:41:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 700. [2018-09-30 20:41:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2018-09-30 20:41:32,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 758 transitions. [2018-09-30 20:41:32,231 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 758 transitions. Word has length 687 [2018-09-30 20:41:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:32,232 INFO L480 AbstractCegarLoop]: Abstraction has 700 states and 758 transitions. [2018-09-30 20:41:32,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 20:41:32,232 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 758 transitions. [2018-09-30 20:41:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2018-09-30 20:41:32,235 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:32,235 INFO L375 BasicCegarLoop]: trace histogram [580, 58, 58, 1, 1, 1] [2018-09-30 20:41:32,235 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:32,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1754304711, now seen corresponding path program 61 times [2018-09-30 20:41:32,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:32,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:32,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:32,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:32,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 204914 backedges. 0 proven. 201724 refuted. 0 times theorem prover too weak. 3190 trivial. 0 not checked. [2018-09-30 20:41:33,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:33,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:41:33,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:33,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 204914 backedges. 0 proven. 201724 refuted. 0 times theorem prover too weak. 3190 trivial. 0 not checked. [2018-09-30 20:41:34,853 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:34,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 20:41:34,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 20:41:34,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 20:41:34,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:34,855 INFO L87 Difference]: Start difference. First operand 700 states and 758 transitions. Second operand 61 states. [2018-09-30 20:41:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:36,094 INFO L93 Difference]: Finished difference Result 725 states and 785 transitions. [2018-09-30 20:41:36,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 20:41:36,094 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 699 [2018-09-30 20:41:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:36,097 INFO L225 Difference]: With dead ends: 725 [2018-09-30 20:41:36,097 INFO L226 Difference]: Without dead ends: 723 [2018-09-30 20:41:36,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:41:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2018-09-30 20:41:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 712. [2018-09-30 20:41:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2018-09-30 20:41:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 771 transitions. [2018-09-30 20:41:36,596 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 771 transitions. Word has length 699 [2018-09-30 20:41:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:36,596 INFO L480 AbstractCegarLoop]: Abstraction has 712 states and 771 transitions. [2018-09-30 20:41:36,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 20:41:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 771 transitions. [2018-09-30 20:41:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2018-09-30 20:41:36,600 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:36,600 INFO L375 BasicCegarLoop]: trace histogram [590, 59, 59, 1, 1, 1] [2018-09-30 20:41:36,600 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:36,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash -31333871, now seen corresponding path program 62 times [2018-09-30 20:41:36,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:36,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:36,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:36,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:41:36,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 212046 backedges. 0 proven. 208801 refuted. 0 times theorem prover too weak. 3245 trivial. 0 not checked. [2018-09-30 20:41:37,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:37,654 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 [2018-09-30 20:41:37,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:41:38,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:41:38,034 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:38,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 212046 backedges. 0 proven. 208801 refuted. 0 times theorem prover too weak. 3245 trivial. 0 not checked. [2018-09-30 20:41:39,580 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:39,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 20:41:39,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 20:41:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 20:41:39,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:39,582 INFO L87 Difference]: Start difference. First operand 712 states and 771 transitions. Second operand 62 states. [2018-09-30 20:41:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:40,856 INFO L93 Difference]: Finished difference Result 737 states and 798 transitions. [2018-09-30 20:41:40,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 20:41:40,856 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 711 [2018-09-30 20:41:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:40,859 INFO L225 Difference]: With dead ends: 737 [2018-09-30 20:41:40,859 INFO L226 Difference]: Without dead ends: 735 [2018-09-30 20:41:40,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-09-30 20:41:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2018-09-30 20:41:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 724. [2018-09-30 20:41:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-09-30 20:41:41,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 784 transitions. [2018-09-30 20:41:41,381 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 784 transitions. Word has length 711 [2018-09-30 20:41:41,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:41,381 INFO L480 AbstractCegarLoop]: Abstraction has 724 states and 784 transitions. [2018-09-30 20:41:41,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 20:41:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 784 transitions. [2018-09-30 20:41:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2018-09-30 20:41:41,385 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:41,385 INFO L375 BasicCegarLoop]: trace histogram [600, 60, 60, 1, 1, 1] [2018-09-30 20:41:41,386 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:41,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash 690066523, now seen corresponding path program 63 times [2018-09-30 20:41:41,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:41,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:41,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:41,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:41,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 219300 backedges. 0 proven. 216000 refuted. 0 times theorem prover too weak. 3300 trivial. 0 not checked. [2018-09-30 20:41:42,297 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:42,297 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 [2018-09-30 20:41:42,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:41:44,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 361 check-sat command(s) [2018-09-30 20:41:44,436 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:44,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 219300 backedges. 0 proven. 216000 refuted. 0 times theorem prover too weak. 3300 trivial. 0 not checked. [2018-09-30 20:41:45,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:45,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 20:41:45,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 20:41:45,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 20:41:45,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:45,886 INFO L87 Difference]: Start difference. First operand 724 states and 784 transitions. Second operand 63 states. [2018-09-30 20:41:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:47,187 INFO L93 Difference]: Finished difference Result 749 states and 811 transitions. [2018-09-30 20:41:47,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 20:41:47,187 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 723 [2018-09-30 20:41:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:47,189 INFO L225 Difference]: With dead ends: 749 [2018-09-30 20:41:47,189 INFO L226 Difference]: Without dead ends: 747 [2018-09-30 20:41:47,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:41:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2018-09-30 20:41:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 736. [2018-09-30 20:41:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2018-09-30 20:41:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 797 transitions. [2018-09-30 20:41:47,735 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 797 transitions. Word has length 723 [2018-09-30 20:41:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:47,735 INFO L480 AbstractCegarLoop]: Abstraction has 736 states and 797 transitions. [2018-09-30 20:41:47,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 20:41:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 797 transitions. [2018-09-30 20:41:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2018-09-30 20:41:47,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:47,739 INFO L375 BasicCegarLoop]: trace histogram [610, 61, 61, 1, 1, 1] [2018-09-30 20:41:47,740 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:47,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -637130843, now seen corresponding path program 64 times [2018-09-30 20:41:47,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:47,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:47,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:47,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:47,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 226676 backedges. 0 proven. 223321 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2018-09-30 20:41:48,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:48,671 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:41:48,678 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:41:49,064 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:41:49,065 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:49,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:50,541 INFO L134 CoverageAnalysis]: Checked inductivity of 226676 backedges. 0 proven. 223321 refuted. 0 times theorem prover too weak. 3355 trivial. 0 not checked. [2018-09-30 20:41:50,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:50,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 20:41:50,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 20:41:50,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 20:41:50,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:50,564 INFO L87 Difference]: Start difference. First operand 736 states and 797 transitions. Second operand 64 states. [2018-09-30 20:41:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:52,161 INFO L93 Difference]: Finished difference Result 761 states and 824 transitions. [2018-09-30 20:41:52,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 20:41:52,161 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 735 [2018-09-30 20:41:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:52,164 INFO L225 Difference]: With dead ends: 761 [2018-09-30 20:41:52,164 INFO L226 Difference]: Without dead ends: 759 [2018-09-30 20:41:52,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:41:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-09-30 20:41:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 748. [2018-09-30 20:41:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2018-09-30 20:41:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 810 transitions. [2018-09-30 20:41:52,723 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 810 transitions. Word has length 735 [2018-09-30 20:41:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:52,724 INFO L480 AbstractCegarLoop]: Abstraction has 748 states and 810 transitions. [2018-09-30 20:41:52,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 20:41:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 810 transitions. [2018-09-30 20:41:52,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2018-09-30 20:41:52,727 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:52,728 INFO L375 BasicCegarLoop]: trace histogram [620, 62, 62, 1, 1, 1] [2018-09-30 20:41:52,728 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:52,728 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:52,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2088363025, now seen corresponding path program 65 times [2018-09-30 20:41:52,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:52,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:52,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:52,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:52,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:41:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 234174 backedges. 0 proven. 230764 refuted. 0 times theorem prover too weak. 3410 trivial. 0 not checked. [2018-09-30 20:41:53,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:41:53,604 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 [2018-09-30 20:41:53,611 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:41:55,755 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 373 check-sat command(s) [2018-09-30 20:41:55,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:41:55,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:41:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 234174 backedges. 0 proven. 230764 refuted. 0 times theorem prover too weak. 3410 trivial. 0 not checked. [2018-09-30 20:41:57,310 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:41:57,310 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 20:41:57,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 20:41:57,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 20:41:57,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:41:57,311 INFO L87 Difference]: Start difference. First operand 748 states and 810 transitions. Second operand 65 states. [2018-09-30 20:41:58,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:41:58,816 INFO L93 Difference]: Finished difference Result 773 states and 837 transitions. [2018-09-30 20:41:58,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 20:41:58,816 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 747 [2018-09-30 20:41:58,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:41:58,818 INFO L225 Difference]: With dead ends: 773 [2018-09-30 20:41:58,819 INFO L226 Difference]: Without dead ends: 771 [2018-09-30 20:41:58,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:41:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2018-09-30 20:41:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 760. [2018-09-30 20:41:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2018-09-30 20:41:59,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 823 transitions. [2018-09-30 20:41:59,400 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 823 transitions. Word has length 747 [2018-09-30 20:41:59,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:41:59,401 INFO L480 AbstractCegarLoop]: Abstraction has 760 states and 823 transitions. [2018-09-30 20:41:59,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 20:41:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 823 transitions. [2018-09-30 20:41:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2018-09-30 20:41:59,405 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:41:59,405 INFO L375 BasicCegarLoop]: trace histogram [630, 63, 63, 1, 1, 1] [2018-09-30 20:41:59,405 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:41:59,406 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:41:59,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1164447431, now seen corresponding path program 66 times [2018-09-30 20:41:59,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:41:59,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:41:59,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:59,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:41:59,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:41:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 241794 backedges. 0 proven. 238329 refuted. 0 times theorem prover too weak. 3465 trivial. 0 not checked. [2018-09-30 20:42:00,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:00,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:42:00,417 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:42:02,629 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 374 check-sat command(s) [2018-09-30 20:42:02,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:02,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 241794 backedges. 0 proven. 238329 refuted. 0 times theorem prover too weak. 3465 trivial. 0 not checked. [2018-09-30 20:42:04,216 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:04,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 20:42:04,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 20:42:04,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 20:42:04,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:04,218 INFO L87 Difference]: Start difference. First operand 760 states and 823 transitions. Second operand 66 states. [2018-09-30 20:42:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:05,696 INFO L93 Difference]: Finished difference Result 785 states and 850 transitions. [2018-09-30 20:42:05,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 20:42:05,696 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 759 [2018-09-30 20:42:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:05,699 INFO L225 Difference]: With dead ends: 785 [2018-09-30 20:42:05,699 INFO L226 Difference]: Without dead ends: 783 [2018-09-30 20:42:05,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:42:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2018-09-30 20:42:06,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 772. [2018-09-30 20:42:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2018-09-30 20:42:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 836 transitions. [2018-09-30 20:42:06,270 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 836 transitions. Word has length 759 [2018-09-30 20:42:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:06,271 INFO L480 AbstractCegarLoop]: Abstraction has 772 states and 836 transitions. [2018-09-30 20:42:06,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 20:42:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 836 transitions. [2018-09-30 20:42:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-09-30 20:42:06,274 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:06,275 INFO L375 BasicCegarLoop]: trace histogram [640, 64, 64, 1, 1, 1] [2018-09-30 20:42:06,275 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:06,275 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash -697161853, now seen corresponding path program 67 times [2018-09-30 20:42:06,275 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:06,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:06,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:06,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:06,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 249536 backedges. 0 proven. 246016 refuted. 0 times theorem prover too weak. 3520 trivial. 0 not checked. [2018-09-30 20:42:07,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:07,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:42:07,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:07,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 249536 backedges. 0 proven. 246016 refuted. 0 times theorem prover too weak. 3520 trivial. 0 not checked. [2018-09-30 20:42:09,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:09,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 20:42:09,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 20:42:09,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 20:42:09,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:09,402 INFO L87 Difference]: Start difference. First operand 772 states and 836 transitions. Second operand 67 states. [2018-09-30 20:42:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:10,958 INFO L93 Difference]: Finished difference Result 797 states and 863 transitions. [2018-09-30 20:42:10,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:42:10,958 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 771 [2018-09-30 20:42:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:10,961 INFO L225 Difference]: With dead ends: 797 [2018-09-30 20:42:10,961 INFO L226 Difference]: Without dead ends: 795 [2018-09-30 20:42:10,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:42:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2018-09-30 20:42:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 784. [2018-09-30 20:42:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-09-30 20:42:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 849 transitions. [2018-09-30 20:42:11,586 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 849 transitions. Word has length 771 [2018-09-30 20:42:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:11,586 INFO L480 AbstractCegarLoop]: Abstraction has 784 states and 849 transitions. [2018-09-30 20:42:11,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 20:42:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 849 transitions. [2018-09-30 20:42:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2018-09-30 20:42:11,590 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:11,591 INFO L375 BasicCegarLoop]: trace histogram [650, 65, 65, 1, 1, 1] [2018-09-30 20:42:11,591 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:11,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1869922611, now seen corresponding path program 68 times [2018-09-30 20:42:11,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:11,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:11,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:11,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:11,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 257400 backedges. 0 proven. 253825 refuted. 0 times theorem prover too weak. 3575 trivial. 0 not checked. [2018-09-30 20:42:12,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:12,587 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 [2018-09-30 20:42:12,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:42:13,013 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:42:13,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:13,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 257400 backedges. 0 proven. 253825 refuted. 0 times theorem prover too weak. 3575 trivial. 0 not checked. [2018-09-30 20:42:14,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:14,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 20:42:14,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 20:42:14,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 20:42:14,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:14,678 INFO L87 Difference]: Start difference. First operand 784 states and 849 transitions. Second operand 68 states. [2018-09-30 20:42:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:16,233 INFO L93 Difference]: Finished difference Result 809 states and 876 transitions. [2018-09-30 20:42:16,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 20:42:16,233 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 783 [2018-09-30 20:42:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:16,236 INFO L225 Difference]: With dead ends: 809 [2018-09-30 20:42:16,236 INFO L226 Difference]: Without dead ends: 807 [2018-09-30 20:42:16,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-09-30 20:42:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-09-30 20:42:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 796. [2018-09-30 20:42:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2018-09-30 20:42:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 862 transitions. [2018-09-30 20:42:16,892 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 862 transitions. Word has length 783 [2018-09-30 20:42:16,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:16,893 INFO L480 AbstractCegarLoop]: Abstraction has 796 states and 862 transitions. [2018-09-30 20:42:16,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 20:42:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 862 transitions. [2018-09-30 20:42:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2018-09-30 20:42:16,897 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:16,898 INFO L375 BasicCegarLoop]: trace histogram [660, 66, 66, 1, 1, 1] [2018-09-30 20:42:16,898 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:16,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1533429993, now seen corresponding path program 69 times [2018-09-30 20:42:16,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:16,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:16,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:16,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:16,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 265386 backedges. 0 proven. 261756 refuted. 0 times theorem prover too weak. 3630 trivial. 0 not checked. [2018-09-30 20:42:17,951 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:17,951 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 [2018-09-30 20:42:18,001 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:42:20,598 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 397 check-sat command(s) [2018-09-30 20:42:20,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:20,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 265386 backedges. 0 proven. 261756 refuted. 0 times theorem prover too weak. 3630 trivial. 0 not checked. [2018-09-30 20:42:22,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:22,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 20:42:22,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 20:42:22,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 20:42:22,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:22,241 INFO L87 Difference]: Start difference. First operand 796 states and 862 transitions. Second operand 69 states. [2018-09-30 20:42:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:23,826 INFO L93 Difference]: Finished difference Result 821 states and 889 transitions. [2018-09-30 20:42:23,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:42:23,827 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 795 [2018-09-30 20:42:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:23,829 INFO L225 Difference]: With dead ends: 821 [2018-09-30 20:42:23,829 INFO L226 Difference]: Without dead ends: 819 [2018-09-30 20:42:23,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:42:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-09-30 20:42:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 808. [2018-09-30 20:42:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2018-09-30 20:42:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 875 transitions. [2018-09-30 20:42:24,503 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 875 transitions. Word has length 795 [2018-09-30 20:42:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:24,504 INFO L480 AbstractCegarLoop]: Abstraction has 808 states and 875 transitions. [2018-09-30 20:42:24,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 20:42:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 875 transitions. [2018-09-30 20:42:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2018-09-30 20:42:24,508 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:24,508 INFO L375 BasicCegarLoop]: trace histogram [670, 67, 67, 1, 1, 1] [2018-09-30 20:42:24,508 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:24,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1888751713, now seen corresponding path program 70 times [2018-09-30 20:42:24,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:24,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:24,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:24,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:24,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 273494 backedges. 0 proven. 269809 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2018-09-30 20:42:25,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:25,646 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 [2018-09-30 20:42:25,653 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:42:26,099 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:42:26,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:26,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 273494 backedges. 0 proven. 269809 refuted. 0 times theorem prover too weak. 3685 trivial. 0 not checked. [2018-09-30 20:42:27,806 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:27,806 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 20:42:27,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 20:42:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 20:42:27,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:27,807 INFO L87 Difference]: Start difference. First operand 808 states and 875 transitions. Second operand 70 states. [2018-09-30 20:42:29,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:29,633 INFO L93 Difference]: Finished difference Result 833 states and 902 transitions. [2018-09-30 20:42:29,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 20:42:29,633 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 807 [2018-09-30 20:42:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:29,636 INFO L225 Difference]: With dead ends: 833 [2018-09-30 20:42:29,636 INFO L226 Difference]: Without dead ends: 831 [2018-09-30 20:42:29,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-09-30 20:42:29,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2018-09-30 20:42:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 820. [2018-09-30 20:42:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2018-09-30 20:42:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 888 transitions. [2018-09-30 20:42:30,334 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 888 transitions. Word has length 807 [2018-09-30 20:42:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:30,335 INFO L480 AbstractCegarLoop]: Abstraction has 820 states and 888 transitions. [2018-09-30 20:42:30,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 20:42:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 888 transitions. [2018-09-30 20:42:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2018-09-30 20:42:30,339 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:30,340 INFO L375 BasicCegarLoop]: trace histogram [680, 68, 68, 1, 1, 1] [2018-09-30 20:42:30,340 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:30,340 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1800353109, now seen corresponding path program 71 times [2018-09-30 20:42:30,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:30,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:30,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:30,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:30,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 281724 backedges. 0 proven. 277984 refuted. 0 times theorem prover too weak. 3740 trivial. 0 not checked. [2018-09-30 20:42:31,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:31,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:42:31,424 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:42:34,042 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 409 check-sat command(s) [2018-09-30 20:42:34,042 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:34,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 281724 backedges. 0 proven. 277984 refuted. 0 times theorem prover too weak. 3740 trivial. 0 not checked. [2018-09-30 20:42:36,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:36,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 20:42:36,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 20:42:36,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 20:42:36,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:36,098 INFO L87 Difference]: Start difference. First operand 820 states and 888 transitions. Second operand 71 states. [2018-09-30 20:42:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:37,747 INFO L93 Difference]: Finished difference Result 845 states and 915 transitions. [2018-09-30 20:42:37,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:42:37,748 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 819 [2018-09-30 20:42:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:37,751 INFO L225 Difference]: With dead ends: 845 [2018-09-30 20:42:37,751 INFO L226 Difference]: Without dead ends: 843 [2018-09-30 20:42:37,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:42:37,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2018-09-30 20:42:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 832. [2018-09-30 20:42:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2018-09-30 20:42:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 901 transitions. [2018-09-30 20:42:38,487 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 901 transitions. Word has length 819 [2018-09-30 20:42:38,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:38,488 INFO L480 AbstractCegarLoop]: Abstraction has 832 states and 901 transitions. [2018-09-30 20:42:38,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 20:42:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 901 transitions. [2018-09-30 20:42:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2018-09-30 20:42:38,492 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:38,492 INFO L375 BasicCegarLoop]: trace histogram [690, 69, 69, 1, 1, 1] [2018-09-30 20:42:38,493 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:38,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1822005771, now seen corresponding path program 72 times [2018-09-30 20:42:38,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:38,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:38,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:38,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:38,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 290076 backedges. 0 proven. 286281 refuted. 0 times theorem prover too weak. 3795 trivial. 0 not checked. [2018-09-30 20:42:39,550 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:39,550 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 20:42:39,557 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:42:42,351 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 411 check-sat command(s) [2018-09-30 20:42:42,351 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:42,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 290076 backedges. 0 proven. 286281 refuted. 0 times theorem prover too weak. 3795 trivial. 0 not checked. [2018-09-30 20:42:44,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:44,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 20:42:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 20:42:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 20:42:44,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:44,390 INFO L87 Difference]: Start difference. First operand 832 states and 901 transitions. Second operand 72 states. [2018-09-30 20:42:46,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:46,132 INFO L93 Difference]: Finished difference Result 857 states and 928 transitions. [2018-09-30 20:42:46,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 20:42:46,133 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 831 [2018-09-30 20:42:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:46,135 INFO L225 Difference]: With dead ends: 857 [2018-09-30 20:42:46,135 INFO L226 Difference]: Without dead ends: 855 [2018-09-30 20:42:46,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-09-30 20:42:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2018-09-30 20:42:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 844. [2018-09-30 20:42:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2018-09-30 20:42:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 914 transitions. [2018-09-30 20:42:46,901 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 914 transitions. Word has length 831 [2018-09-30 20:42:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:46,902 INFO L480 AbstractCegarLoop]: Abstraction has 844 states and 914 transitions. [2018-09-30 20:42:46,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 20:42:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 914 transitions. [2018-09-30 20:42:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-09-30 20:42:46,906 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:46,907 INFO L375 BasicCegarLoop]: trace histogram [700, 70, 70, 1, 1, 1] [2018-09-30 20:42:46,907 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:46,907 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:46,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1902862911, now seen corresponding path program 73 times [2018-09-30 20:42:46,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:46,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:46,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:42:46,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 298550 backedges. 0 proven. 294700 refuted. 0 times theorem prover too weak. 3850 trivial. 0 not checked. [2018-09-30 20:42:48,078 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:48,078 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 [2018-09-30 20:42:48,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:48,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:42:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 298550 backedges. 0 proven. 294700 refuted. 0 times theorem prover too weak. 3850 trivial. 0 not checked. [2018-09-30 20:42:50,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:42:50,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 20:42:50,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 20:42:50,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 20:42:50,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:42:50,444 INFO L87 Difference]: Start difference. First operand 844 states and 914 transitions. Second operand 73 states. [2018-09-30 20:42:52,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:42:52,275 INFO L93 Difference]: Finished difference Result 869 states and 941 transitions. [2018-09-30 20:42:52,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 20:42:52,276 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 843 [2018-09-30 20:42:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:42:52,278 INFO L225 Difference]: With dead ends: 869 [2018-09-30 20:42:52,278 INFO L226 Difference]: Without dead ends: 867 [2018-09-30 20:42:52,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-09-30 20:42:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2018-09-30 20:42:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 856. [2018-09-30 20:42:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 856 states. [2018-09-30 20:42:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 927 transitions. [2018-09-30 20:42:53,088 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 927 transitions. Word has length 843 [2018-09-30 20:42:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:42:53,088 INFO L480 AbstractCegarLoop]: Abstraction has 856 states and 927 transitions. [2018-09-30 20:42:53,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 20:42:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 927 transitions. [2018-09-30 20:42:53,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2018-09-30 20:42:53,093 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:42:53,094 INFO L375 BasicCegarLoop]: trace histogram [710, 71, 71, 1, 1, 1] [2018-09-30 20:42:53,094 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:42:53,094 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:42:53,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1438007177, now seen corresponding path program 74 times [2018-09-30 20:42:53,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:42:53,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:42:53,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:53,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:42:53,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:42:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:42:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 307146 backedges. 0 proven. 303241 refuted. 0 times theorem prover too weak. 3905 trivial. 0 not checked. [2018-09-30 20:42:54,260 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:42:54,260 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 [2018-09-30 20:42:54,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:42:54,724 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:42:54,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:42:54,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-30 20:42:55,122 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-30 20:42:55,324 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:42:55,324 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:42:55,330 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:42:55,330 INFO L202 PluginConnector]: Adding new model nested1.i_4.bplTransformedIcfg_BEv2_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:42:55 BoogieIcfgContainer [2018-09-30 20:42:55,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:42:55,331 INFO L168 Benchmark]: Toolchain (without parser) took 243074.16 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -146.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-30 20:42:55,333 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-09-30 20:42:55,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.83 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. [2018-09-30 20:42:55,334 INFO L168 Benchmark]: Boogie Preprocessor took 18.02 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. [2018-09-30 20:42:55,335 INFO L168 Benchmark]: RCFGBuilder took 244.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:42:55,335 INFO L168 Benchmark]: TraceAbstraction took 242764.09 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -167.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-30 20:42:55,339 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 0.21 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 39.83 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 18.02 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 244.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242764.09 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -167.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 35). Cancelled while BasicCegarLoop was analyzing trace of length 856 with TraceHistMax 710, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 242.6s OverallTime, 76 OverallIterations, 710 TraceHistogramMax, 61.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 298 SDtfs, 5106 SDslu, 3676 SDs, 0 SdLazy, 6456 SolverSat, 461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32806 GetRequests, 29986 SyntacticMatches, 0 SemanticMatches, 2820 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=856occurred in iteration=75, 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: 17.6s AutomataMinimizationTime, 75 MinimizatonAttempts, 752 StatesRemovedByMinimization, 71 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 3.6s SsaConstructionTime, 42.1s SatisfiabilityAnalysisTime, 99.0s InterpolantComputationTime, 60050 NumberOfCodeBlocks, 59889 NumberOfCodeBlocksAsserted, 7579 NumberOfCheckSat, 59902 ConstructedInterpolants, 0 QuantifiedInterpolants, 101469592 SizeOfPredicates, 73 NumberOfNonLiveVariables, 120018 ConjunctsInSsa, 2655 ConjunctsInUnsatCore, 148 InterpolantComputations, 2 PerfectInterpolantSequences, 275833/14221117 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/nested1.i_4.bplTransformedIcfg_BEv2_12.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-42-55-350.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested1.i_4.bplTransformedIcfg_BEv2_12.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-42-55-350.csv Completed graceful shutdown