java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:02:35,114 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:02:35,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:02:35,131 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:02:35,131 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:02:35,132 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:02:35,136 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:02:35,139 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:02:35,141 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:02:35,148 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:02:35,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:02:35,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:02:35,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:02:35,154 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:02:35,155 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:02:35,157 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:02:35,158 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:02:35,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:02:35,166 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:02:35,168 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:02:35,170 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:02:35,171 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:02:35,174 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:02:35,174 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:02:35,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:02:35,175 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:02:35,177 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:02:35,178 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:02:35,179 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:02:35,181 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:02:35,181 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:02:35,183 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:02:35,183 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:02:35,185 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:02:35,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:02:35,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:02:35,187 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:02:35,215 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:02:35,215 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:02:35,216 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:02:35,216 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:02:35,217 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:02:35,217 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:02:35,217 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:02:35,217 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:02:35,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:02:35,220 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:02:35,221 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:02:35,221 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:02:35,221 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:02:35,221 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:02:35,221 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:02:35,222 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:02:35,222 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:02:35,222 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:02:35,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:02:35,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:02:35,224 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:02:35,224 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:02:35,224 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:02:35,224 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:02:35,224 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:02:35,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:02:35,225 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:02:35,225 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:02:35,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:02:35,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:02:35,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:02:35,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:02:35,310 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:02:35,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label07_true-unreach-call.c [2018-10-24 17:02:35,382 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b1e58b1e/0fdb3d747f474de48d7e3d05c4074bd8/FLAG4af564916 [2018-10-24 17:02:36,243 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:02:36,245 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label07_true-unreach-call.c [2018-10-24 17:02:36,300 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b1e58b1e/0fdb3d747f474de48d7e3d05c4074bd8/FLAG4af564916 [2018-10-24 17:02:36,319 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b1e58b1e/0fdb3d747f474de48d7e3d05c4074bd8 [2018-10-24 17:02:36,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:02:36,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:02:36,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:36,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:02:36,342 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:02:36,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:36" (1/1) ... [2018-10-24 17:02:36,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:36, skipping insertion in model container [2018-10-24 17:02:36,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:36" (1/1) ... [2018-10-24 17:02:36,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:02:36,617 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:02:38,585 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:38,590 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:02:39,761 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:39,812 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:02:39,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39 WrapperNode [2018-10-24 17:02:39,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:39,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:39,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:02:39,815 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:02:39,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:39,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:40,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:40,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:02:40,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:02:40,990 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:02:41,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... [2018-10-24 17:02:41,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:02:41,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:02:41,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:02:41,928 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:02:41,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:02:41,981 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:02:41,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:02:41,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:03:00,664 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:03:00,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:00 BoogieIcfgContainer [2018-10-24 17:03:00,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:03:00,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:03:00,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:03:00,670 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:03:00,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:02:36" (1/3) ... [2018-10-24 17:03:00,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfc5e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:00, skipping insertion in model container [2018-10-24 17:03:00,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:39" (2/3) ... [2018-10-24 17:03:00,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfc5e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:00, skipping insertion in model container [2018-10-24 17:03:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:00" (3/3) ... [2018-10-24 17:03:00,677 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label07_true-unreach-call.c [2018-10-24 17:03:00,687 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:03:00,699 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:03:00,717 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:03:00,776 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:03:00,777 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:03:00,777 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:03:00,778 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:03:00,778 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:03:00,778 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:03:00,778 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:03:00,778 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:03:00,778 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:03:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:03:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 17:03:00,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:00,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:03:00,853 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:00,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:00,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1515441142, now seen corresponding path program 1 times [2018-10-24 17:03:00,860 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:00,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:00,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:00,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:01,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:01,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:01,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:01,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:01,533 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:03:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:25,243 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-24 17:03:25,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:25,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-24 17:03:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:25,297 INFO L225 Difference]: With dead ends: 6419 [2018-10-24 17:03:25,297 INFO L226 Difference]: Without dead ends: 4663 [2018-10-24 17:03:25,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-24 17:03:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-24 17:03:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-24 17:03:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-24 17:03:25,501 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 62 [2018-10-24 17:03:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:25,502 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-24 17:03:25,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-24 17:03:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 17:03:25,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:25,510 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:03:25,510 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:25,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:25,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2009892205, now seen corresponding path program 1 times [2018-10-24 17:03:25,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:25,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:25,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:25,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:25,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:25,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:25,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:25,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:25,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:25,847 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-24 17:03:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:55,001 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-24 17:03:55,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:55,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-10-24 17:03:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:55,071 INFO L225 Difference]: With dead ends: 17564 [2018-10-24 17:03:55,071 INFO L226 Difference]: Without dead ends: 12993 [2018-10-24 17:03:55,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-24 17:03:55,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-24 17:03:55,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-24 17:03:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-24 17:03:55,282 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 146 [2018-10-24 17:03:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:55,282 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-24 17:03:55,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-24 17:03:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 17:03:55,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:55,290 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:03:55,291 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:55,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:55,294 INFO L82 PathProgramCache]: Analyzing trace with hash -527428546, now seen corresponding path program 1 times [2018-10-24 17:03:55,294 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:55,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:55,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:55,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:55,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:55,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:55,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:55,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:55,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:55,582 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-24 17:04:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:15,257 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-24 17:04:15,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:15,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 186 [2018-10-24 17:04:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:15,332 INFO L225 Difference]: With dead ends: 34022 [2018-10-24 17:04:15,332 INFO L226 Difference]: Without dead ends: 25352 [2018-10-24 17:04:15,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-24 17:04:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-24 17:04:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-24 17:04:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-24 17:04:15,728 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 186 [2018-10-24 17:04:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:15,728 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-24 17:04:15,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-24 17:04:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-24 17:04:15,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:15,734 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:15,735 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:15,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash -616961647, now seen corresponding path program 1 times [2018-10-24 17:04:15,735 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:15,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:15,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:15,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:15,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2018-10-24 17:04:16,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:16,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:16,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:16,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:16,225 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-24 17:04:33,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:33,778 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-24 17:04:33,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:33,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 370 [2018-10-24 17:04:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:33,904 INFO L225 Difference]: With dead ends: 93031 [2018-10-24 17:04:33,904 INFO L226 Difference]: Without dead ends: 67695 [2018-10-24 17:04:33,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:34,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-24 17:04:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-24 17:04:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-24 17:04:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-24 17:04:34,877 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 370 [2018-10-24 17:04:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:34,877 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-24 17:04:34,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-24 17:04:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2018-10-24 17:04:34,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:34,891 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 17:04:34,891 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:34,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash -325173188, now seen corresponding path program 1 times [2018-10-24 17:04:34,892 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:34,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:34,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:34,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:34,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:35,297 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 17:04:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-10-24 17:04:36,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:36,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:36,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:36,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:36,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:36,088 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-24 17:04:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:58,062 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-10-24 17:04:58,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:58,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 471 [2018-10-24 17:04:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:58,370 INFO L225 Difference]: With dead ends: 235259 [2018-10-24 17:04:58,370 INFO L226 Difference]: Without dead ends: 170305 [2018-10-24 17:04:58,448 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-24 17:04:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-10-24 17:04:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-10-24 17:05:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-10-24 17:05:00,246 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 471 [2018-10-24 17:05:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:00,247 INFO L481 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-10-24 17:05:00,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-10-24 17:05:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-10-24 17:05:00,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:00,299 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:00,299 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:00,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1483854522, now seen corresponding path program 1 times [2018-10-24 17:05:00,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:00,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:00,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:00,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:00,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:05:02,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:02,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:05:02,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:02,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:02,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:02,342 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 4 states. [2018-10-24 17:05:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:20,443 INFO L93 Difference]: Finished difference Result 336375 states and 403486 transitions. [2018-10-24 17:05:20,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:20,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 950 [2018-10-24 17:05:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:20,627 INFO L225 Difference]: With dead ends: 336375 [2018-10-24 17:05:20,628 INFO L226 Difference]: Without dead ends: 168870 [2018-10-24 17:05:20,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168870 states. [2018-10-24 17:05:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168870 to 151103. [2018-10-24 17:05:22,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151103 states. [2018-10-24 17:05:22,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151103 states to 151103 states and 167472 transitions. [2018-10-24 17:05:22,215 INFO L78 Accepts]: Start accepts. Automaton has 151103 states and 167472 transitions. Word has length 950 [2018-10-24 17:05:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:22,216 INFO L481 AbstractCegarLoop]: Abstraction has 151103 states and 167472 transitions. [2018-10-24 17:05:22,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 151103 states and 167472 transitions. [2018-10-24 17:05:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2018-10-24 17:05:22,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:22,281 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:22,281 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:22,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:22,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1404159583, now seen corresponding path program 1 times [2018-10-24 17:05:22,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:22,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:22,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:22,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:22,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-24 17:05:23,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:23,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:05:23,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:05:23,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:05:23,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:05:23,984 INFO L87 Difference]: Start difference. First operand 151103 states and 167472 transitions. Second operand 3 states. [2018-10-24 17:05:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:36,589 INFO L93 Difference]: Finished difference Result 371874 states and 416272 transitions. [2018-10-24 17:05:36,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:05:36,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1054 [2018-10-24 17:05:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:36,864 INFO L225 Difference]: With dead ends: 371874 [2018-10-24 17:05:36,864 INFO L226 Difference]: Without dead ends: 222139 [2018-10-24 17:05:36,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:05:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222139 states. [2018-10-24 17:05:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222139 to 197548. [2018-10-24 17:05:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197548 states. [2018-10-24 17:05:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197548 states to 197548 states and 219145 transitions. [2018-10-24 17:05:40,125 INFO L78 Accepts]: Start accepts. Automaton has 197548 states and 219145 transitions. Word has length 1054 [2018-10-24 17:05:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:40,127 INFO L481 AbstractCegarLoop]: Abstraction has 197548 states and 219145 transitions. [2018-10-24 17:05:40,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:05:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 197548 states and 219145 transitions. [2018-10-24 17:05:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2018-10-24 17:05:40,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:40,150 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:40,150 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:40,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1337706722, now seen corresponding path program 1 times [2018-10-24 17:05:40,151 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:40,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:40,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:40,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:40,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:40,821 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:05:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-10-24 17:05:41,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:41,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:05:41,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:05:41,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:05:41,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:05:41,712 INFO L87 Difference]: Start difference. First operand 197548 states and 219145 transitions. Second operand 7 states. [2018-10-24 17:05:42,588 WARN L179 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-24 17:06:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:13,507 INFO L93 Difference]: Finished difference Result 433353 states and 478672 transitions. [2018-10-24 17:06:13,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:06:13,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1081 [2018-10-24 17:06:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:13,758 INFO L225 Difference]: With dead ends: 433353 [2018-10-24 17:06:13,758 INFO L226 Difference]: Without dead ends: 237173 [2018-10-24 17:06:13,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:06:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237173 states. [2018-10-24 17:06:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237173 to 233069. [2018-10-24 17:06:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233069 states. [2018-10-24 17:06:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233069 states to 233069 states and 255533 transitions. [2018-10-24 17:06:16,972 INFO L78 Accepts]: Start accepts. Automaton has 233069 states and 255533 transitions. Word has length 1081 [2018-10-24 17:06:16,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:16,973 INFO L481 AbstractCegarLoop]: Abstraction has 233069 states and 255533 transitions. [2018-10-24 17:06:16,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:06:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 233069 states and 255533 transitions. [2018-10-24 17:06:16,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2018-10-24 17:06:16,995 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:16,996 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:16,996 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:16,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:16,997 INFO L82 PathProgramCache]: Analyzing trace with hash 158576520, now seen corresponding path program 1 times [2018-10-24 17:06:16,997 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:16,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:16,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:16,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:16,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:17,921 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:06:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 537 proven. 4 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-10-24 17:06:21,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:06:21,415 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:06:21,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:21,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-24 17:06:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-10-24 17:06:28,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:06:28,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:06:28,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:06:28,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:06:28,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:06:28,406 INFO L87 Difference]: Start difference. First operand 233069 states and 255533 transitions. Second operand 5 states. [2018-10-24 17:06:28,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 17:06:28,407 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:06:28,413 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:06:28,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:06:28 BoogieIcfgContainer [2018-10-24 17:06:28,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:06:28,415 INFO L168 Benchmark]: Toolchain (without parser) took 232081.23 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 17:06:28,416 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:06:28,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3476.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:28,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 1175.70 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:28,418 INFO L168 Benchmark]: Boogie Preprocessor took 937.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 92.2 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:28,419 INFO L168 Benchmark]: RCFGBuilder took 18737.57 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 278.4 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -376.8 MB). Peak memory consumption was 866.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:28,420 INFO L168 Benchmark]: TraceAbstraction took 207747.53 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: -822.5 MB). Peak memory consumption was 933.4 MB. Max. memory is 7.1 GB. [2018-10-24 17:06:28,426 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3476.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1175.70 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 878.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 937.56 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 92.2 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18737.57 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 278.4 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -376.8 MB). Peak memory consumption was 866.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207747.53 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.5 GB in the beginning and 3.3 GB in the end (delta: -822.5 MB). Peak memory consumption was 933.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (233069states) and FLOYD_HOARE automaton (currently 2 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.6s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 176.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11150 SDtfs, 34195 SDslu, 2955 SDs, 0 SdLazy, 69401 SolverSat, 18891 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 146.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1152 GetRequests, 1118 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233069occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 55058 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 6538 NumberOfCodeBlocks, 6538 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 6528 ConstructedInterpolants, 0 QuantifiedInterpolants, 14989477 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1238 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 4905/4909 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown