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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:57:50,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:57:50,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:57:50,118 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:57:50,118 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:57:50,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:57:50,121 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:57:50,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:57:50,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:57:50,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:57:50,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:57:50,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:57:50,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:57:50,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:57:50,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:57:50,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:57:50,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:57:50,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:57:50,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:57:50,137 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:57:50,138 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:57:50,139 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:57:50,142 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:57:50,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:57:50,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:57:50,144 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:57:50,145 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:57:50,146 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:57:50,147 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:57:50,148 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:57:50,148 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:57:50,149 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:57:50,152 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:57:50,167 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:57:50,167 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:57:50,168 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:57:50,168 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:57:50,169 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:57:50,169 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:57:50,169 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:57:50,169 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:57:50,170 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:57:50,170 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:57:50,170 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:57:50,170 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:57:50,170 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:57:50,171 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:57:50,171 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:57:50,171 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:57:50,171 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:57:50,172 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:57:50,172 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:57:50,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:57:50,172 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:57:50,172 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:57:50,173 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:57:50,173 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:57:50,173 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:57:50,173 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:57:50,173 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:57:50,173 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:57:50,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:57:50,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:57:50,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:57:50,235 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:57:50,235 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:57:50,236 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-11-06 21:57:50,292 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f699df9b5/a0150467dff84a0a8d1f837225ce7102/FLAG6ce05901a [2018-11-06 21:57:51,208 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:57:51,209 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-11-06 21:57:51,256 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f699df9b5/a0150467dff84a0a8d1f837225ce7102/FLAG6ce05901a [2018-11-06 21:57:51,271 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f699df9b5/a0150467dff84a0a8d1f837225ce7102 [2018-11-06 21:57:51,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:57:51,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:57:51,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:57:51,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:57:51,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:57:51,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:51" (1/1) ... [2018-11-06 21:57:51,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a4c63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:51, skipping insertion in model container [2018-11-06 21:57:51,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:51" (1/1) ... [2018-11-06 21:57:51,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:57:51,580 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:57:53,655 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:57:53,660 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:57:54,799 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:57:54,850 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:57:54,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54 WrapperNode [2018-11-06 21:57:54,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:57:54,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:57:54,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:57:54,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:57:54,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:55,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:57:56,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:57:56,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:57:56,042 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:57:56,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... [2018-11-06 21:57:56,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:57:57,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:57:57,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:57:57,000 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:57:57,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:57:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:57:57,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:57:57,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:58:14,334 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:58:14,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:14 BoogieIcfgContainer [2018-11-06 21:58:14,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:58:14,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:58:14,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:58:14,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:58:14,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:51" (1/3) ... [2018-11-06 21:58:14,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbc0e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:14, skipping insertion in model container [2018-11-06 21:58:14,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54" (2/3) ... [2018-11-06 21:58:14,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbc0e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:14, skipping insertion in model container [2018-11-06 21:58:14,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:14" (3/3) ... [2018-11-06 21:58:14,344 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12_true-unreach-call.c [2018-11-06 21:58:14,354 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:58:14,365 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:58:14,382 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:58:14,435 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:58:14,435 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:58:14,436 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:58:14,436 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:58:14,436 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:58:14,436 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:58:14,436 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:58:14,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:58:14,437 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:58:14,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 21:58:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-06 21:58:14,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:14,498 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:14,501 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:14,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-11-06 21:58:14,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:14,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:14,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:14,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:14,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:58:14,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:14,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:58:14,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:58:14,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:58:14,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:14,989 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 21:58:38,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:38,060 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-11-06 21:58:38,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:58:38,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-06 21:58:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:38,117 INFO L225 Difference]: With dead ends: 6419 [2018-11-06 21:58:38,117 INFO L226 Difference]: Without dead ends: 4663 [2018-11-06 21:58:38,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-11-06 21:58:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-11-06 21:58:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-11-06 21:58:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-11-06 21:58:38,360 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 45 [2018-11-06 21:58:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:38,361 INFO L480 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-11-06 21:58:38,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:38,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-11-06 21:58:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-06 21:58:38,367 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:38,368 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:38,368 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:38,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:38,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1565483384, now seen corresponding path program 1 times [2018-11-06 21:58:38,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:38,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:38,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:38,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:38,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:58:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:58:38,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:58:38,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:58:38,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:58:38,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:58:38,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:38,659 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-11-06 21:58:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:58:59,701 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-11-06 21:58:59,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:58:59,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-06 21:58:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:58:59,768 INFO L225 Difference]: With dead ends: 17564 [2018-11-06 21:58:59,768 INFO L226 Difference]: Without dead ends: 12993 [2018-11-06 21:58:59,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:58:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-11-06 21:58:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-11-06 21:58:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-11-06 21:58:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-11-06 21:58:59,972 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 129 [2018-11-06 21:58:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:58:59,972 INFO L480 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-11-06 21:58:59,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:58:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-11-06 21:58:59,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-06 21:58:59,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:58:59,982 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:58:59,982 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:58:59,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:58:59,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1180457619, now seen corresponding path program 1 times [2018-11-06 21:58:59,983 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:58:59,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:58:59,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:58:59,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:58:59,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:59:00,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:00,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:59:00,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:59:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:59:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:00,378 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-11-06 21:59:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:17,240 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-11-06 21:59:17,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:59:17,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-11-06 21:59:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:17,312 INFO L225 Difference]: With dead ends: 34022 [2018-11-06 21:59:17,313 INFO L226 Difference]: Without dead ends: 25352 [2018-11-06 21:59:17,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-11-06 21:59:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-11-06 21:59:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-11-06 21:59:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-11-06 21:59:17,732 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 169 [2018-11-06 21:59:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:17,732 INFO L480 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-11-06 21:59:17,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:59:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-11-06 21:59:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-06 21:59:17,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:17,741 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:17,741 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:17,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:17,742 INFO L82 PathProgramCache]: Analyzing trace with hash 352749820, now seen corresponding path program 1 times [2018-11-06 21:59:17,742 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:17,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:17,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:17,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:17,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-11-06 21:59:18,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:18,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:59:18,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:59:18,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:59:18,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:18,230 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-11-06 21:59:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:34,336 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-11-06 21:59:34,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:59:34,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2018-11-06 21:59:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:34,479 INFO L225 Difference]: With dead ends: 93031 [2018-11-06 21:59:34,479 INFO L226 Difference]: Without dead ends: 67695 [2018-11-06 21:59:34,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-11-06 21:59:35,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-11-06 21:59:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-11-06 21:59:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-11-06 21:59:35,430 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 353 [2018-11-06 21:59:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:35,430 INFO L480 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-11-06 21:59:35,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:59:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-11-06 21:59:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-11-06 21:59:35,451 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:35,451 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:35,452 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:35,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 336374991, now seen corresponding path program 1 times [2018-11-06 21:59:35,452 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:35,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:35,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:35,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:35,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-06 21:59:36,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:36,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:59:36,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:59:36,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:59:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:36,529 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-11-06 21:59:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:59:52,807 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-11-06 21:59:52,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:59:52,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2018-11-06 21:59:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:59:53,020 INFO L225 Difference]: With dead ends: 235259 [2018-11-06 21:59:53,020 INFO L226 Difference]: Without dead ends: 170305 [2018-11-06 21:59:53,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:59:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-11-06 21:59:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-11-06 21:59:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-11-06 21:59:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-11-06 21:59:55,011 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 454 [2018-11-06 21:59:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:59:55,012 INFO L480 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-11-06 21:59:55,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:59:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-11-06 21:59:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2018-11-06 21:59:55,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:59:55,070 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:59:55,071 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:59:55,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:59:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1340196843, now seen corresponding path program 1 times [2018-11-06 21:59:55,072 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:59:55,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:59:55,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:55,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:59:55,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:59:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:59:55,714 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 21:59:56,236 WARN L179 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 21:59:56,830 WARN L179 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-11-06 21:59:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-11-06 21:59:58,396 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:59:58,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:59:58,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:59:58,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:59:58,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:59:58,398 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-11-06 22:00:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:32,866 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-11-06 22:00:32,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:00:32,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1007 [2018-11-06 22:00:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:33,120 INFO L225 Difference]: With dead ends: 377375 [2018-11-06 22:00:33,120 INFO L226 Difference]: Without dead ends: 209870 [2018-11-06 22:00:33,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:00:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-11-06 22:00:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-11-06 22:00:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-11-06 22:00:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-11-06 22:00:35,949 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1007 [2018-11-06 22:00:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:35,949 INFO L480 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-11-06 22:00:35,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:00:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-11-06 22:00:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2018-11-06 22:00:35,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:35,982 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:35,982 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:35,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2033357584, now seen corresponding path program 1 times [2018-11-06 22:00:35,983 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:35,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:35,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:35,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:35,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 22:00:37,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:37,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:00:37,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:00:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:00:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:37,276 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-11-06 22:00:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:00:52,574 INFO L93 Difference]: Finished difference Result 474364 states and 558603 transitions. [2018-11-06 22:00:52,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:00:52,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1026 [2018-11-06 22:00:52,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:00:52,949 INFO L225 Difference]: With dead ends: 474364 [2018-11-06 22:00:52,949 INFO L226 Difference]: Without dead ends: 265863 [2018-11-06 22:00:53,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:00:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265863 states. [2018-11-06 22:00:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265863 to 265852. [2018-11-06 22:00:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265852 states. [2018-11-06 22:00:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265852 states to 265852 states and 296554 transitions. [2018-11-06 22:00:56,913 INFO L78 Accepts]: Start accepts. Automaton has 265852 states and 296554 transitions. Word has length 1026 [2018-11-06 22:00:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:00:56,915 INFO L480 AbstractCegarLoop]: Abstraction has 265852 states and 296554 transitions. [2018-11-06 22:00:56,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:00:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 265852 states and 296554 transitions. [2018-11-06 22:00:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-11-06 22:00:56,938 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:00:56,939 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:00:56,939 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:00:56,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:00:56,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2116416662, now seen corresponding path program 1 times [2018-11-06 22:00:56,940 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:00:56,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:00:56,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:56,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:00:56,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:00:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:00:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-11-06 22:00:59,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:00:59,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:00:59,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:00:59,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:00:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:00:59,593 INFO L87 Difference]: Start difference. First operand 265852 states and 296554 transitions. Second operand 3 states. [2018-11-06 22:01:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:01:13,440 INFO L93 Difference]: Finished difference Result 621859 states and 698847 transitions. [2018-11-06 22:01:13,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:01:13,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1037 [2018-11-06 22:01:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:01:13,907 INFO L225 Difference]: With dead ends: 621859 [2018-11-06 22:01:13,907 INFO L226 Difference]: Without dead ends: 357375 [2018-11-06 22:01:14,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:01:14,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357375 states. [2018-11-06 22:01:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357375 to 317758. [2018-11-06 22:01:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317758 states. [2018-11-06 22:01:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317758 states to 317758 states and 353479 transitions. [2018-11-06 22:01:25,330 INFO L78 Accepts]: Start accepts. Automaton has 317758 states and 353479 transitions. Word has length 1037 [2018-11-06 22:01:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:01:25,331 INFO L480 AbstractCegarLoop]: Abstraction has 317758 states and 353479 transitions. [2018-11-06 22:01:25,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:01:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 317758 states and 353479 transitions. [2018-11-06 22:01:25,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2018-11-06 22:01:25,351 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:01:25,352 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:01:25,352 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:01:25,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:01:25,353 INFO L82 PathProgramCache]: Analyzing trace with hash 546065080, now seen corresponding path program 1 times [2018-11-06 22:01:25,353 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:01:25,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:01:25,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:25,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:01:25,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:01:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:01:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-11-06 22:01:27,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:01:27,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:01:27,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:01:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:01:27,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:01:27,844 INFO L87 Difference]: Start difference. First operand 317758 states and 353479 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 22:01:33,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:01:33,209 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:01:33,215 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:01:33,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:01:33 BoogieIcfgContainer [2018-11-06 22:01:33,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:01:33,216 INFO L168 Benchmark]: Toolchain (without parser) took 221933.57 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 22:01:33,218 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-06 22:01:33,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3565.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 404.3 MB). Peak memory consumption was 404.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:33,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 1189.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:33,220 INFO L168 Benchmark]: Boogie Preprocessor took 957.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 98.7 MB). Peak memory consumption was 98.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:33,221 INFO L168 Benchmark]: RCFGBuilder took 17335.76 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 292.6 MB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -431.7 MB). Peak memory consumption was 850.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:01:33,222 INFO L168 Benchmark]: TraceAbstraction took 198879.19 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: -505.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 22:01:33,228 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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. * CACSL2BoogieTranslator took 3565.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 404.3 MB). Peak memory consumption was 404.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1189.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 957.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 98.7 MB). Peak memory consumption was 98.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17335.76 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 292.6 MB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -431.7 MB). Peak memory consumption was 850.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198879.19 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.5 GB in the beginning and 3.0 GB in the end (delta: -505.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was constructing difference of abstraction (317758states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (25541 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 198.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 164.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12609 SDtfs, 33845 SDslu, 3617 SDs, 0 SdLazy, 82420 SolverSat, 19554 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317758occurred in iteration=8, 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: 21.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 52330 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 5308 NumberOfCodeBlocks, 5308 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 5299 ConstructedInterpolants, 0 QuantifiedInterpolants, 8608105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 4412/4412 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown