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/Problem18_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:51:41,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:51:41,361 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:51:41,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:51:41,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:51:41,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:51:41,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:51:41,378 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:51:41,379 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:51:41,380 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:51:41,381 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:51:41,381 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:51:41,382 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:51:41,383 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:51:41,384 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:51:41,385 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:51:41,386 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:51:41,388 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:51:41,390 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:51:41,392 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:51:41,393 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:51:41,394 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:51:41,397 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:51:41,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:51:41,397 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:51:41,398 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:51:41,399 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:51:41,400 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:51:41,401 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:51:41,402 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:51:41,403 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:51:41,403 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 21:51:41,404 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 21:51:41,404 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 21:51:41,405 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 21:51:41,405 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 21:51:41,406 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 21:51:41,421 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:51:41,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:51:41,422 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:51:41,422 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:51:41,423 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:51:41,423 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:51:41,423 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:51:41,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:51:41,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:51:41,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:51:41,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:51:41,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:51:41,424 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:51:41,424 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:51:41,425 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:51:41,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:51:41,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:51:41,425 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:51:41,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:51:41,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:51:41,426 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:51:41,426 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:51:41,426 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:51:41,427 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:51:41,427 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:51:41,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:51:41,427 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:51:41,427 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:51:41,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:51:41,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:51:41,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:51:41,507 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:51:41,508 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:51:41,509 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c [2018-11-06 21:51:41,583 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c564e9e6/b6b2886b53cb4cf28a8cb0a4e9c27511/FLAG2c88c54f7 [2018-11-06 21:51:42,266 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:51:42,267 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label24_true-unreach-call.c [2018-11-06 21:51:42,291 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c564e9e6/b6b2886b53cb4cf28a8cb0a4e9c27511/FLAG2c88c54f7 [2018-11-06 21:51:42,307 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c564e9e6/b6b2886b53cb4cf28a8cb0a4e9c27511 [2018-11-06 21:51:42,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:51:42,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:51:42,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:51:42,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:51:42,327 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:51:42,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:51:42" (1/1) ... [2018-11-06 21:51:42,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:42, skipping insertion in model container [2018-11-06 21:51:42,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:51:42" (1/1) ... [2018-11-06 21:51:42,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:51:42,469 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:51:43,558 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:51:43,564 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:51:44,010 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:51:44,043 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:51:44,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44 WrapperNode [2018-11-06 21:51:44,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:51:44,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:51:44,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:51:44,045 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:51:44,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:51:44,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:51:44,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:51:44,533 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:51:44,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (1/1) ... [2018-11-06 21:51:44,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:51:44,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:51:44,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:51:44,793 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:51:44,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (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 21:51:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:51:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:51:44,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:51:54,118 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:51:54,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:51:54 BoogieIcfgContainer [2018-11-06 21:51:54,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:51:54,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:51:54,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:51:54,124 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:51:54,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:51:42" (1/3) ... [2018-11-06 21:51:54,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:51:54, skipping insertion in model container [2018-11-06 21:51:54,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:51:44" (2/3) ... [2018-11-06 21:51:54,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:51:54, skipping insertion in model container [2018-11-06 21:51:54,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:51:54" (3/3) ... [2018-11-06 21:51:54,129 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label24_true-unreach-call.c [2018-11-06 21:51:54,140 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:51:54,154 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:51:54,173 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:51:54,223 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:51:54,224 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:51:54,224 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:51:54,224 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:51:54,224 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:51:54,224 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:51:54,225 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:51:54,225 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:51:54,225 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:51:54,265 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-11-06 21:51:54,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-06 21:51:54,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:51:54,285 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:51:54,289 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:51:54,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:51:54,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2139005982, now seen corresponding path program 1 times [2018-11-06 21:51:54,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:51:54,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:51:54,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:54,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:51:54,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:51:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:51:54,930 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 21:51:54,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:51:54,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:51:54,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:51:54,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:51:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:51:54,961 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-11-06 21:51:55,145 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-06 21:52:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:52:08,890 INFO L93 Difference]: Finished difference Result 3599 states and 7034 transitions. [2018-11-06 21:52:08,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:52:08,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-06 21:52:08,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:52:08,940 INFO L225 Difference]: With dead ends: 3599 [2018-11-06 21:52:08,940 INFO L226 Difference]: Without dead ends: 2831 [2018-11-06 21:52:08,947 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:52:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2018-11-06 21:52:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2018-11-06 21:52:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2018-11-06 21:52:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4101 transitions. [2018-11-06 21:52:09,118 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4101 transitions. Word has length 52 [2018-11-06 21:52:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:52:09,119 INFO L480 AbstractCegarLoop]: Abstraction has 2831 states and 4101 transitions. [2018-11-06 21:52:09,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:52:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4101 transitions. [2018-11-06 21:52:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-06 21:52:09,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:52:09,133 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:52:09,133 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:52:09,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:52:09,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1349773097, now seen corresponding path program 1 times [2018-11-06 21:52:09,133 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:52:09,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:52:09,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:09,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:09,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:09,837 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-11-06 21:52:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-06 21:52:09,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:52:09,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:52:09,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:52:09,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:52:09,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:52:09,947 INFO L87 Difference]: Start difference. First operand 2831 states and 4101 transitions. Second operand 5 states. [2018-11-06 21:52:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:52:19,989 INFO L93 Difference]: Finished difference Result 8424 states and 12649 transitions. [2018-11-06 21:52:19,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:52:19,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-11-06 21:52:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:52:20,027 INFO L225 Difference]: With dead ends: 8424 [2018-11-06 21:52:20,027 INFO L226 Difference]: Without dead ends: 5595 [2018-11-06 21:52:20,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:52:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-11-06 21:52:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5595. [2018-11-06 21:52:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5595 states. [2018-11-06 21:52:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 7136 transitions. [2018-11-06 21:52:20,151 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 7136 transitions. Word has length 214 [2018-11-06 21:52:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:52:20,152 INFO L480 AbstractCegarLoop]: Abstraction has 5595 states and 7136 transitions. [2018-11-06 21:52:20,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:52:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 7136 transitions. [2018-11-06 21:52:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-11-06 21:52:20,162 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:52:20,163 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:52:20,163 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:52:20,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:52:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1534682539, now seen corresponding path program 1 times [2018-11-06 21:52:20,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:52:20,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:52:20,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:20,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:20,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:20,641 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 21:52:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-06 21:52:20,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:52:20,711 INFO L225 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 [2018-11-06 21:52:20,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:20,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:52:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:52:21,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:52:21,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:52:21,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:52:21,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:52:21,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:52:21,074 INFO L87 Difference]: Start difference. First operand 5595 states and 7136 transitions. Second operand 4 states. [2018-11-06 21:52:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:52:27,976 INFO L93 Difference]: Finished difference Result 16041 states and 21992 transitions. [2018-11-06 21:52:27,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:52:27,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 303 [2018-11-06 21:52:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:52:28,037 INFO L225 Difference]: With dead ends: 16041 [2018-11-06 21:52:28,037 INFO L226 Difference]: Without dead ends: 11139 [2018-11-06 21:52:28,050 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 303 SyntacticMatches, 0 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 21:52:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11139 states. [2018-11-06 21:52:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11139 to 7668. [2018-11-06 21:52:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7668 states. [2018-11-06 21:52:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7668 states to 7668 states and 9572 transitions. [2018-11-06 21:52:28,244 INFO L78 Accepts]: Start accepts. Automaton has 7668 states and 9572 transitions. Word has length 303 [2018-11-06 21:52:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:52:28,245 INFO L480 AbstractCegarLoop]: Abstraction has 7668 states and 9572 transitions. [2018-11-06 21:52:28,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:52:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7668 states and 9572 transitions. [2018-11-06 21:52:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-06 21:52:28,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:52:28,252 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:52:28,253 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:52:28,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:52:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1961480248, now seen corresponding path program 1 times [2018-11-06 21:52:28,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:52:28,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:52:28,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:28,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:28,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:28,756 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-06 21:52:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:52:29,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:52:29,091 INFO L225 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 [2018-11-06 21:52:29,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:29,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:52:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-06 21:52:29,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:52:29,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-11-06 21:52:29,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:52:29,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:52:29,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:52:29,378 INFO L87 Difference]: Start difference. First operand 7668 states and 9572 transitions. Second operand 6 states. [2018-11-06 21:52:39,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:52:39,245 INFO L93 Difference]: Finished difference Result 23637 states and 30091 transitions. [2018-11-06 21:52:39,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:52:39,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 326 [2018-11-06 21:52:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:52:39,291 INFO L225 Difference]: With dead ends: 23637 [2018-11-06 21:52:39,292 INFO L226 Difference]: Without dead ends: 15278 [2018-11-06 21:52:39,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:52:39,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15278 states. [2018-11-06 21:52:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15278 to 11813. [2018-11-06 21:52:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11813 states. [2018-11-06 21:52:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11813 states to 11813 states and 13144 transitions. [2018-11-06 21:52:39,545 INFO L78 Accepts]: Start accepts. Automaton has 11813 states and 13144 transitions. Word has length 326 [2018-11-06 21:52:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:52:39,546 INFO L480 AbstractCegarLoop]: Abstraction has 11813 states and 13144 transitions. [2018-11-06 21:52:39,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:52:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 11813 states and 13144 transitions. [2018-11-06 21:52:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-11-06 21:52:39,586 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:52:39,587 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, 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, 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, 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] [2018-11-06 21:52:39,588 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:52:39,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:52:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1161902023, now seen corresponding path program 1 times [2018-11-06 21:52:39,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:52:39,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:52:39,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:39,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:39,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 443 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-11-06 21:52:41,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:52:41,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:52:41,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:52:41,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:52:41,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:52:41,212 INFO L87 Difference]: Start difference. First operand 11813 states and 13144 transitions. Second operand 4 states. [2018-11-06 21:52:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:52:47,834 INFO L93 Difference]: Finished difference Result 28476 states and 33059 transitions. [2018-11-06 21:52:47,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:52:47,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1027 [2018-11-06 21:52:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:52:47,865 INFO L225 Difference]: With dead ends: 28476 [2018-11-06 21:52:47,866 INFO L226 Difference]: Without dead ends: 17356 [2018-11-06 21:52:47,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:52:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17356 states. [2018-11-06 21:52:48,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17356 to 14577. [2018-11-06 21:52:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14577 states. [2018-11-06 21:52:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 16291 transitions. [2018-11-06 21:52:48,094 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 16291 transitions. Word has length 1027 [2018-11-06 21:52:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:52:48,096 INFO L480 AbstractCegarLoop]: Abstraction has 14577 states and 16291 transitions. [2018-11-06 21:52:48,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:52:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 16291 transitions. [2018-11-06 21:52:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2018-11-06 21:52:48,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:52:48,141 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, 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, 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, 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] [2018-11-06 21:52:48,141 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:52:48,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:52:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2052979996, now seen corresponding path program 1 times [2018-11-06 21:52:48,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:52:48,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:52:48,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:48,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:48,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:49,369 WARN L179 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-11-06 21:52:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-11-06 21:52:49,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:52:49,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:52:49,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:52:49,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:52:49,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:52:49,855 INFO L87 Difference]: Start difference. First operand 14577 states and 16291 transitions. Second operand 4 states. [2018-11-06 21:52:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:52:55,909 INFO L93 Difference]: Finished difference Result 49882 states and 56668 transitions. [2018-11-06 21:52:55,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:52:55,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1041 [2018-11-06 21:52:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:52:55,965 INFO L225 Difference]: With dead ends: 49882 [2018-11-06 21:52:55,965 INFO L226 Difference]: Without dead ends: 35998 [2018-11-06 21:52:55,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:52:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35998 states. [2018-11-06 21:52:56,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35998 to 35307. [2018-11-06 21:52:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35307 states. [2018-11-06 21:52:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35307 states to 35307 states and 38772 transitions. [2018-11-06 21:52:56,411 INFO L78 Accepts]: Start accepts. Automaton has 35307 states and 38772 transitions. Word has length 1041 [2018-11-06 21:52:56,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:52:56,413 INFO L480 AbstractCegarLoop]: Abstraction has 35307 states and 38772 transitions. [2018-11-06 21:52:56,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:52:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 35307 states and 38772 transitions. [2018-11-06 21:52:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2018-11-06 21:52:56,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:52:56,438 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:52:56,439 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:52:56,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:52:56,439 INFO L82 PathProgramCache]: Analyzing trace with hash -257824427, now seen corresponding path program 1 times [2018-11-06 21:52:56,439 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:52:56,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:52:56,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:56,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:52:56,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:52:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:52:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 821 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-11-06 21:52:57,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:52:57,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:52:57,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:52:57,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:52:57,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:52:57,722 INFO L87 Difference]: Start difference. First operand 35307 states and 38772 transitions. Second operand 4 states. [2018-11-06 21:53:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:53:02,774 INFO L93 Difference]: Finished difference Result 78904 states and 87225 transitions. [2018-11-06 21:53:02,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:53:02,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1168 [2018-11-06 21:53:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:53:02,842 INFO L225 Difference]: With dead ends: 78904 [2018-11-06 21:53:02,842 INFO L226 Difference]: Without dead ends: 44290 [2018-11-06 21:53:02,878 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:53:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44290 states. [2018-11-06 21:53:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44290 to 43599. [2018-11-06 21:53:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43599 states. [2018-11-06 21:53:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43599 states to 43599 states and 47211 transitions. [2018-11-06 21:53:03,359 INFO L78 Accepts]: Start accepts. Automaton has 43599 states and 47211 transitions. Word has length 1168 [2018-11-06 21:53:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:53:03,360 INFO L480 AbstractCegarLoop]: Abstraction has 43599 states and 47211 transitions. [2018-11-06 21:53:03,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:53:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 43599 states and 47211 transitions. [2018-11-06 21:53:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1183 [2018-11-06 21:53:03,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:53:03,393 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:03,394 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:53:03,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:53:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1908385112, now seen corresponding path program 1 times [2018-11-06 21:53:03,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:53:03,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:53:03,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:03,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:53:03,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:53:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2018-11-06 21:53:05,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:53:05,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:53:05,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:53:05,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:53:05,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:53:05,278 INFO L87 Difference]: Start difference. First operand 43599 states and 47211 transitions. Second operand 3 states. [2018-11-06 21:53:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:53:08,384 INFO L93 Difference]: Finished difference Result 86505 states and 93728 transitions. [2018-11-06 21:53:08,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:53:08,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1182 [2018-11-06 21:53:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:53:08,449 INFO L225 Difference]: With dead ends: 86505 [2018-11-06 21:53:08,450 INFO L226 Difference]: Without dead ends: 43599 [2018-11-06 21:53:08,485 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 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 21:53:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43599 states. [2018-11-06 21:53:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43599 to 43599. [2018-11-06 21:53:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43599 states. [2018-11-06 21:53:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43599 states to 43599 states and 46514 transitions. [2018-11-06 21:53:09,404 INFO L78 Accepts]: Start accepts. Automaton has 43599 states and 46514 transitions. Word has length 1182 [2018-11-06 21:53:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:53:09,406 INFO L480 AbstractCegarLoop]: Abstraction has 43599 states and 46514 transitions. [2018-11-06 21:53:09,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:53:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 43599 states and 46514 transitions. [2018-11-06 21:53:09,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2018-11-06 21:53:09,439 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:53:09,440 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:09,441 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:53:09,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:53:09,441 INFO L82 PathProgramCache]: Analyzing trace with hash -50616559, now seen corresponding path program 1 times [2018-11-06 21:53:09,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:53:09,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:53:09,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:09,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:53:09,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:53:10,398 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 21:53:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1628 backedges. 651 proven. 697 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-06 21:53:12,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:53:12,772 INFO L225 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 [2018-11-06 21:53:12,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:53:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:53:13,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:53:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1628 backedges. 860 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-11-06 21:53:14,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:53:14,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-11-06 21:53:14,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 21:53:14,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 21:53:14,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:53:14,017 INFO L87 Difference]: Start difference. First operand 43599 states and 46514 transitions. Second operand 10 states. [2018-11-06 21:53:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:53:35,415 INFO L93 Difference]: Finished difference Result 219947 states and 236540 transitions. [2018-11-06 21:53:35,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-06 21:53:35,415 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1270 [2018-11-06 21:53:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:53:35,642 INFO L225 Difference]: With dead ends: 219947 [2018-11-06 21:53:35,642 INFO L226 Difference]: Without dead ends: 134595 [2018-11-06 21:53:35,738 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1304 GetRequests, 1282 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-11-06 21:53:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134595 states. [2018-11-06 21:53:36,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134595 to 54617. [2018-11-06 21:53:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54617 states. [2018-11-06 21:53:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54617 states to 54617 states and 56748 transitions. [2018-11-06 21:53:37,523 INFO L78 Accepts]: Start accepts. Automaton has 54617 states and 56748 transitions. Word has length 1270 [2018-11-06 21:53:37,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:53:37,524 INFO L480 AbstractCegarLoop]: Abstraction has 54617 states and 56748 transitions. [2018-11-06 21:53:37,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 21:53:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 54617 states and 56748 transitions. [2018-11-06 21:53:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2018-11-06 21:53:37,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:53:37,578 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:37,578 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:53:37,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:53:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash 602726678, now seen corresponding path program 1 times [2018-11-06 21:53:37,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:53:37,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:53:37,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:37,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:53:37,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:53:39,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2435 backedges. 1653 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2018-11-06 21:53:39,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:53:39,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:53:39,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:53:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:53:39,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:53:39,683 INFO L87 Difference]: Start difference. First operand 54617 states and 56748 transitions. Second operand 4 states. [2018-11-06 21:53:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:53:44,103 INFO L93 Difference]: Finished difference Result 111305 states and 115775 transitions. [2018-11-06 21:53:44,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:53:44,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1487 [2018-11-06 21:53:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:53:44,193 INFO L225 Difference]: With dead ends: 111305 [2018-11-06 21:53:44,193 INFO L226 Difference]: Without dead ends: 57381 [2018-11-06 21:53:44,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 21:53:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57381 states. [2018-11-06 21:53:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57381 to 56690. [2018-11-06 21:53:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56690 states. [2018-11-06 21:53:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56690 states to 56690 states and 58535 transitions. [2018-11-06 21:53:44,808 INFO L78 Accepts]: Start accepts. Automaton has 56690 states and 58535 transitions. Word has length 1487 [2018-11-06 21:53:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:53:44,809 INFO L480 AbstractCegarLoop]: Abstraction has 56690 states and 58535 transitions. [2018-11-06 21:53:44,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:53:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 56690 states and 58535 transitions. [2018-11-06 21:53:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1541 [2018-11-06 21:53:44,847 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:53:44,848 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:44,849 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:53:44,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:53:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1787651139, now seen corresponding path program 1 times [2018-11-06 21:53:44,850 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:53:44,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:53:44,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:44,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:53:44,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:53:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:53:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2647 backedges. 1812 proven. 499 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2018-11-06 21:53:51,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:53:51,050 INFO L225 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 [2018-11-06 21:53:51,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:53:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:53:51,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:53:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2647 backedges. 1091 proven. 0 refuted. 0 times theorem prover too weak. 1556 trivial. 0 not checked. [2018-11-06 21:53:53,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:53:53,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2018-11-06 21:53:53,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 21:53:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 21:53:53,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:53:53,554 INFO L87 Difference]: Start difference. First operand 56690 states and 58535 transitions. Second operand 13 states. [2018-11-06 21:54:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:54:09,813 INFO L93 Difference]: Finished difference Result 116683 states and 120418 transitions. [2018-11-06 21:54:09,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 21:54:09,813 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1540 [2018-11-06 21:54:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:54:09,865 INFO L225 Difference]: With dead ends: 116683 [2018-11-06 21:54:09,865 INFO L226 Difference]: Without dead ends: 56532 [2018-11-06 21:54:09,885 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2018-11-06 21:54:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56532 states. [2018-11-06 21:54:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56532 to 52536. [2018-11-06 21:54:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52536 states. [2018-11-06 21:54:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52536 states to 52536 states and 54138 transitions. [2018-11-06 21:54:10,324 INFO L78 Accepts]: Start accepts. Automaton has 52536 states and 54138 transitions. Word has length 1540 [2018-11-06 21:54:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:54:10,325 INFO L480 AbstractCegarLoop]: Abstraction has 52536 states and 54138 transitions. [2018-11-06 21:54:10,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 21:54:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 52536 states and 54138 transitions. [2018-11-06 21:54:10,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2018-11-06 21:54:10,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:54:10,354 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-11-06 21:54:10,355 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:54:10,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:54:10,356 INFO L82 PathProgramCache]: Analyzing trace with hash -241003558, now seen corresponding path program 1 times [2018-11-06 21:54:10,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:54:10,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:54:10,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:10,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:10,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1122 proven. 0 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2018-11-06 21:54:12,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:54:12,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:54:12,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:54:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:54:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:54:12,089 INFO L87 Difference]: Start difference. First operand 52536 states and 54138 transitions. Second operand 4 states. [2018-11-06 21:54:17,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:54:17,124 INFO L93 Difference]: Finished difference Result 114744 states and 118471 transitions. [2018-11-06 21:54:17,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:54:17,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1584 [2018-11-06 21:54:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:54:17,190 INFO L225 Difference]: With dead ends: 114744 [2018-11-06 21:54:17,190 INFO L226 Difference]: Without dead ends: 61518 [2018-11-06 21:54:17,222 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:54:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61518 states. [2018-11-06 21:54:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61518 to 60827. [2018-11-06 21:54:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60827 states. [2018-11-06 21:54:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60827 states to 60827 states and 62665 transitions. [2018-11-06 21:54:17,684 INFO L78 Accepts]: Start accepts. Automaton has 60827 states and 62665 transitions. Word has length 1584 [2018-11-06 21:54:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:54:17,685 INFO L480 AbstractCegarLoop]: Abstraction has 60827 states and 62665 transitions. [2018-11-06 21:54:17,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:54:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 60827 states and 62665 transitions. [2018-11-06 21:54:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1608 [2018-11-06 21:54:17,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:54:17,727 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:54:17,728 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:54:17,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:54:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1986984168, now seen corresponding path program 1 times [2018-11-06 21:54:17,728 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:54:17,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:54:17,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:17,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:17,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:19,058 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-06 21:54:19,433 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-11-06 21:54:19,634 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-06 21:54:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 1504 proven. 894 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-06 21:54:22,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:54:22,888 INFO L225 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 [2018-11-06 21:54:22,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:23,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:54:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2516 backedges. 1791 proven. 0 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2018-11-06 21:54:24,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:54:24,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 21:54:24,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 21:54:24,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 21:54:24,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:54:24,233 INFO L87 Difference]: Start difference. First operand 60827 states and 62665 transitions. Second operand 12 states. [2018-11-06 21:54:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:54:39,198 INFO L93 Difference]: Finished difference Result 172940 states and 178609 transitions. [2018-11-06 21:54:39,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-06 21:54:39,199 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1607 [2018-11-06 21:54:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:54:39,311 INFO L225 Difference]: With dead ends: 172940 [2018-11-06 21:54:39,311 INFO L226 Difference]: Without dead ends: 112806 [2018-11-06 21:54:39,351 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1648 GetRequests, 1619 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=584, Unknown=0, NotChecked=0, Total=812 [2018-11-06 21:54:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112806 states. [2018-11-06 21:54:40,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112806 to 80866. [2018-11-06 21:54:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80866 states. [2018-11-06 21:54:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80866 states to 80866 states and 83109 transitions. [2018-11-06 21:54:40,132 INFO L78 Accepts]: Start accepts. Automaton has 80866 states and 83109 transitions. Word has length 1607 [2018-11-06 21:54:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:54:40,133 INFO L480 AbstractCegarLoop]: Abstraction has 80866 states and 83109 transitions. [2018-11-06 21:54:40,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 21:54:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 80866 states and 83109 transitions. [2018-11-06 21:54:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1630 [2018-11-06 21:54:40,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:54:40,179 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:40,179 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:54:40,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:54:40,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1719612221, now seen corresponding path program 1 times [2018-11-06 21:54:40,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:54:40,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:54:40,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:40,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:40,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:41,238 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 21:54:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2729 backedges. 2114 proven. 0 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2018-11-06 21:54:42,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:54:42,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:54:42,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:54:42,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:54:42,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:54:42,413 INFO L87 Difference]: Start difference. First operand 80866 states and 83109 transitions. Second operand 4 states. [2018-11-06 21:54:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:54:46,528 INFO L93 Difference]: Finished difference Result 161730 states and 166217 transitions. [2018-11-06 21:54:46,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:54:46,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1629 [2018-11-06 21:54:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:54:46,608 INFO L225 Difference]: With dead ends: 161730 [2018-11-06 21:54:46,608 INFO L226 Difference]: Without dead ends: 80864 [2018-11-06 21:54:46,649 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:54:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80864 states. [2018-11-06 21:54:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80864 to 79482. [2018-11-06 21:54:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79482 states. [2018-11-06 21:54:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79482 states to 79482 states and 81357 transitions. [2018-11-06 21:54:47,328 INFO L78 Accepts]: Start accepts. Automaton has 79482 states and 81357 transitions. Word has length 1629 [2018-11-06 21:54:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:54:47,329 INFO L480 AbstractCegarLoop]: Abstraction has 79482 states and 81357 transitions. [2018-11-06 21:54:47,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:54:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 79482 states and 81357 transitions. [2018-11-06 21:54:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1665 [2018-11-06 21:54:47,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:54:47,366 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:54:47,366 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:54:47,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:54:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash -92686596, now seen corresponding path program 1 times [2018-11-06 21:54:47,367 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:54:47,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:54:47,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:47,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:47,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 2033 proven. 0 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2018-11-06 21:54:49,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:54:49,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:54:49,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:54:49,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:54:49,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:54:49,473 INFO L87 Difference]: Start difference. First operand 79482 states and 81357 transitions. Second operand 3 states. [2018-11-06 21:54:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:54:52,257 INFO L93 Difference]: Finished difference Result 159653 states and 163416 transitions. [2018-11-06 21:54:52,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:54:52,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1664 [2018-11-06 21:54:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:54:52,351 INFO L225 Difference]: With dead ends: 159653 [2018-11-06 21:54:52,351 INFO L226 Difference]: Without dead ends: 80864 [2018-11-06 21:54:52,401 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:54:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80864 states. [2018-11-06 21:54:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80864 to 80173. [2018-11-06 21:54:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80173 states. [2018-11-06 21:54:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80173 states to 80173 states and 82056 transitions. [2018-11-06 21:54:53,137 INFO L78 Accepts]: Start accepts. Automaton has 80173 states and 82056 transitions. Word has length 1664 [2018-11-06 21:54:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:54:53,138 INFO L480 AbstractCegarLoop]: Abstraction has 80173 states and 82056 transitions. [2018-11-06 21:54:53,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:54:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 80173 states and 82056 transitions. [2018-11-06 21:54:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1684 [2018-11-06 21:54:53,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:54:53,177 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:53,178 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:54:53,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:54:53,178 INFO L82 PathProgramCache]: Analyzing trace with hash -296043155, now seen corresponding path program 1 times [2018-11-06 21:54:53,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:54:53,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:54:53,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:53,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:53,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:54:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 1453 proven. 1350 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:54:57,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:54:57,828 INFO L225 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 [2018-11-06 21:54:57,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:54:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:54:58,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:54:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 2057 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2018-11-06 21:54:59,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:54:59,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-11-06 21:54:59,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 21:54:59,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 21:54:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-11-06 21:54:59,819 INFO L87 Difference]: Start difference. First operand 80173 states and 82056 transitions. Second operand 12 states. [2018-11-06 21:55:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:55:14,070 INFO L93 Difference]: Finished difference Result 190790 states and 195262 transitions. [2018-11-06 21:55:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-06 21:55:14,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1683 [2018-11-06 21:55:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:55:14,179 INFO L225 Difference]: With dead ends: 190790 [2018-11-06 21:55:14,179 INFO L226 Difference]: Without dead ends: 111310 [2018-11-06 21:55:14,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1721 GetRequests, 1694 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2018-11-06 21:55:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111310 states. [2018-11-06 21:55:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111310 to 78791. [2018-11-06 21:55:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78791 states. [2018-11-06 21:55:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78791 states to 78791 states and 80144 transitions. [2018-11-06 21:55:15,043 INFO L78 Accepts]: Start accepts. Automaton has 78791 states and 80144 transitions. Word has length 1683 [2018-11-06 21:55:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:55:15,044 INFO L480 AbstractCegarLoop]: Abstraction has 78791 states and 80144 transitions. [2018-11-06 21:55:15,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 21:55:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 78791 states and 80144 transitions. [2018-11-06 21:55:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1763 [2018-11-06 21:55:15,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:55:15,083 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:15,084 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:55:15,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:55:15,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1114176638, now seen corresponding path program 1 times [2018-11-06 21:55:15,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:55:15,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:55:15,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:55:15,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:55:15,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:55:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:55:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 2334 proven. 559 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2018-11-06 21:55:18,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:55:18,457 INFO L225 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 [2018-11-06 21:55:18,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:55:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:55:18,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:55:19,688 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-06 21:55:20,461 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 29 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown