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/Problem12_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:01:14,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:01:14,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:01:15,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:01:15,005 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:01:15,006 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:01:15,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:01:15,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:01:15,011 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:01:15,011 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:01:15,012 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:01:15,013 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:01:15,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:01:15,014 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:01:15,015 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:01:15,016 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:01:15,017 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:01:15,019 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:01:15,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:01:15,023 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:01:15,024 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:01:15,025 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:01:15,028 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:01:15,028 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:01:15,028 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:01:15,029 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:01:15,030 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:01:15,031 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:01:15,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:01:15,033 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:01:15,033 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:01:15,034 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:01:15,037 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 14:01:15,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:01:15,055 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:01:15,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:01:15,058 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:01:15,059 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:01:15,059 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:01:15,060 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:01:15,060 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:01:15,060 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:01:15,060 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:01:15,061 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:01:15,062 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:01:15,062 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:01:15,062 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:01:15,062 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:01:15,064 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:01:15,064 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:01:15,064 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:01:15,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:01:15,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:01:15,065 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:01:15,065 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:01:15,065 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:01:15,065 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:01:15,066 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:01:15,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:01:15,066 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:01:15,066 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:01:15,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:01:15,146 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:01:15,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:01:15,152 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:01:15,152 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:01:15,153 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-24 14:01:15,218 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d54bd8bf/ec966e9e999e42eb8054485121be6437/FLAG85b8d2250 [2018-10-24 14:01:15,995 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:01:15,996 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label19_false-unreach-call.c [2018-10-24 14:01:16,027 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d54bd8bf/ec966e9e999e42eb8054485121be6437/FLAG85b8d2250 [2018-10-24 14:01:16,042 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d54bd8bf/ec966e9e999e42eb8054485121be6437 [2018-10-24 14:01:16,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:01:16,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:01:16,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:01:16,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:01:16,060 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:01:16,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:01:16" (1/1) ... [2018-10-24 14:01:16,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52aacd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:16, skipping insertion in model container [2018-10-24 14:01:16,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:01:16" (1/1) ... [2018-10-24 14:01:16,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:01:16,220 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:01:17,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:01:17,406 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:01:18,135 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:01:18,171 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:01:18,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18 WrapperNode [2018-10-24 14:01:18,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:01:18,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:01:18,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:01:18,174 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:01:18,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:18,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:18,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:01:18,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:01:18,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:01:18,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:01:18,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:18,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:18,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:18,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:19,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:19,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:19,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (1/1) ... [2018-10-24 14:01:19,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:01:19,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:01:19,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:01:19,222 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:01:19,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (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 14:01:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:01:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:01:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:01:28,207 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:01:28,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:01:28 BoogieIcfgContainer [2018-10-24 14:01:28,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:01:28,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:01:28,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:01:28,214 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:01:28,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:01:16" (1/3) ... [2018-10-24 14:01:28,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7e705b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:01:28, skipping insertion in model container [2018-10-24 14:01:28,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:01:18" (2/3) ... [2018-10-24 14:01:28,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7e705b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:01:28, skipping insertion in model container [2018-10-24 14:01:28,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:01:28" (3/3) ... [2018-10-24 14:01:28,221 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19_false-unreach-call.c [2018-10-24 14:01:28,231 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:01:28,244 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:01:28,264 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:01:28,313 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:01:28,314 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:01:28,314 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:01:28,314 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:01:28,314 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:01:28,314 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:01:28,314 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:01:28,315 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:01:28,315 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:01:28,355 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:01:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 14:01:28,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:28,365 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:01:28,367 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:28,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:28,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-24 14:01:28,375 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:28,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:28,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:28,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:28,731 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 14:01:28,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:01:28,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:01:28,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:01:28,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:01:28,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:01:28,762 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:01:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:42,829 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-10-24 14:01:42,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:01:42,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-24 14:01:42,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:42,878 INFO L225 Difference]: With dead ends: 3146 [2018-10-24 14:01:42,878 INFO L226 Difference]: Without dead ends: 2320 [2018-10-24 14:01:42,890 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 14:01:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-10-24 14:01:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-10-24 14:01:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-10-24 14:01:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-10-24 14:01:43,062 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 15 [2018-10-24 14:01:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:43,063 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-10-24 14:01:43,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:01:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-10-24 14:01:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 14:01:43,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:43,068 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:01:43,068 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:43,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:43,070 INFO L82 PathProgramCache]: Analyzing trace with hash -373120294, now seen corresponding path program 1 times [2018-10-24 14:01:43,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:43,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:43,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:43,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:43,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:43,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:01:43,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:01:43,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:01:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:01:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:01:43,519 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 4 states. [2018-10-24 14:01:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:01:56,265 INFO L93 Difference]: Finished difference Result 9150 states and 15304 transitions. [2018-10-24 14:01:56,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:01:56,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-24 14:01:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:01:56,302 INFO L225 Difference]: With dead ends: 9150 [2018-10-24 14:01:56,303 INFO L226 Difference]: Without dead ends: 6832 [2018-10-24 14:01:56,307 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 14:01:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-10-24 14:01:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-10-24 14:01:56,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-24 14:01:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10776 transitions. [2018-10-24 14:01:56,426 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10776 transitions. Word has length 87 [2018-10-24 14:01:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:01:56,427 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 10776 transitions. [2018-10-24 14:01:56,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:01:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10776 transitions. [2018-10-24 14:01:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 14:01:56,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:01:56,432 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:01:56,432 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:01:56,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:01:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1497999273, now seen corresponding path program 1 times [2018-10-24 14:01:56,432 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:01:56,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:01:56,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:56,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:01:56,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:01:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:01:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:01:56,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:01:56,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:01:56,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:01:56,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:01:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:01:56,983 INFO L87 Difference]: Start difference. First operand 6832 states and 10776 transitions. Second operand 6 states. [2018-10-24 14:02:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:16,284 INFO L93 Difference]: Finished difference Result 15918 states and 24201 transitions. [2018-10-24 14:02:16,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:02:16,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-24 14:02:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:16,325 INFO L225 Difference]: With dead ends: 15918 [2018-10-24 14:02:16,326 INFO L226 Difference]: Without dead ends: 9088 [2018-10-24 14:02:16,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:02:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9088 states. [2018-10-24 14:02:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9088 to 9088. [2018-10-24 14:02:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9088 states. [2018-10-24 14:02:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9088 states to 9088 states and 12817 transitions. [2018-10-24 14:02:16,522 INFO L78 Accepts]: Start accepts. Automaton has 9088 states and 12817 transitions. Word has length 93 [2018-10-24 14:02:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:16,523 INFO L481 AbstractCegarLoop]: Abstraction has 9088 states and 12817 transitions. [2018-10-24 14:02:16,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:02:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 9088 states and 12817 transitions. [2018-10-24 14:02:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 14:02:16,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:16,532 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:02:16,532 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:16,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:16,533 INFO L82 PathProgramCache]: Analyzing trace with hash -629270407, now seen corresponding path program 1 times [2018-10-24 14:02:16,533 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:16,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:16,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:16,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:16,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:17,090 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 14:02:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:02:17,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:02:17,365 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 14:02:17,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:17,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:02:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:02:17,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:02:17,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:02:17,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:02:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:02:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:02:17,862 INFO L87 Difference]: Start difference. First operand 9088 states and 12817 transitions. Second operand 7 states. [2018-10-24 14:02:18,472 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 14:02:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:39,623 INFO L93 Difference]: Finished difference Result 48282 states and 70811 transitions. [2018-10-24 14:02:39,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 14:02:39,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2018-10-24 14:02:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:39,727 INFO L225 Difference]: With dead ends: 48282 [2018-10-24 14:02:39,727 INFO L226 Difference]: Without dead ends: 37689 [2018-10-24 14:02:39,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:02:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37689 states. [2018-10-24 14:02:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37689 to 22623. [2018-10-24 14:02:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22623 states. [2018-10-24 14:02:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22623 states to 22623 states and 27521 transitions. [2018-10-24 14:02:40,530 INFO L78 Accepts]: Start accepts. Automaton has 22623 states and 27521 transitions. Word has length 165 [2018-10-24 14:02:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:40,530 INFO L481 AbstractCegarLoop]: Abstraction has 22623 states and 27521 transitions. [2018-10-24 14:02:40,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:02:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 22623 states and 27521 transitions. [2018-10-24 14:02:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-24 14:02:40,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:40,544 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:02:40,545 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:40,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1816142010, now seen corresponding path program 1 times [2018-10-24 14:02:40,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:40,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:40,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:40,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:40,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-24 14:02:40,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:02:40,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:02:40,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:02:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:02:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:02:40,934 INFO L87 Difference]: Start difference. First operand 22623 states and 27521 transitions. Second operand 3 states. [2018-10-24 14:02:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:44,919 INFO L93 Difference]: Finished difference Result 51260 states and 63098 transitions. [2018-10-24 14:02:44,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:02:44,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 399 [2018-10-24 14:02:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:44,984 INFO L225 Difference]: With dead ends: 51260 [2018-10-24 14:02:44,984 INFO L226 Difference]: Without dead ends: 29391 [2018-10-24 14:02:45,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:02:45,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29391 states. [2018-10-24 14:02:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29391 to 28639. [2018-10-24 14:02:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28639 states. [2018-10-24 14:02:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28639 states to 28639 states and 34132 transitions. [2018-10-24 14:02:45,399 INFO L78 Accepts]: Start accepts. Automaton has 28639 states and 34132 transitions. Word has length 399 [2018-10-24 14:02:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:45,400 INFO L481 AbstractCegarLoop]: Abstraction has 28639 states and 34132 transitions. [2018-10-24 14:02:45,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:02:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28639 states and 34132 transitions. [2018-10-24 14:02:45,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-10-24 14:02:45,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:45,419 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:02:45,419 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:45,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1157546942, now seen corresponding path program 1 times [2018-10-24 14:02:45,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:45,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:45,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:45,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:45,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:45,877 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:02:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-24 14:02:46,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:02:46,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:02:46,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:02:46,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:02:46,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:02:46,060 INFO L87 Difference]: Start difference. First operand 28639 states and 34132 transitions. Second operand 4 states. [2018-10-24 14:02:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:02:54,507 INFO L93 Difference]: Finished difference Result 99388 states and 118651 transitions. [2018-10-24 14:02:54,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:02:54,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 405 [2018-10-24 14:02:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:02:54,620 INFO L225 Difference]: With dead ends: 99388 [2018-10-24 14:02:54,621 INFO L226 Difference]: Without dead ends: 71503 [2018-10-24 14:02:54,661 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 14:02:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71503 states. [2018-10-24 14:02:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71503 to 70751. [2018-10-24 14:02:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70751 states. [2018-10-24 14:02:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70751 states to 70751 states and 79771 transitions. [2018-10-24 14:02:55,420 INFO L78 Accepts]: Start accepts. Automaton has 70751 states and 79771 transitions. Word has length 405 [2018-10-24 14:02:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:02:55,421 INFO L481 AbstractCegarLoop]: Abstraction has 70751 states and 79771 transitions. [2018-10-24 14:02:55,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:02:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 70751 states and 79771 transitions. [2018-10-24 14:02:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-24 14:02:55,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:02:55,448 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:55,448 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:02:55,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:02:55,449 INFO L82 PathProgramCache]: Analyzing trace with hash -480905004, now seen corresponding path program 1 times [2018-10-24 14:02:55,449 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:02:55,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:02:55,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:55,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:02:55,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:02:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:02:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-24 14:02:55,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:02:55,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:02:55,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:02:55,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:02:55,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:02:55,822 INFO L87 Difference]: Start difference. First operand 70751 states and 79771 transitions. Second operand 3 states. [2018-10-24 14:03:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:04,252 INFO L93 Difference]: Finished difference Result 182108 states and 206865 transitions. [2018-10-24 14:03:04,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:03:04,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 452 [2018-10-24 14:03:04,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:04,400 INFO L225 Difference]: With dead ends: 182108 [2018-10-24 14:03:04,400 INFO L226 Difference]: Without dead ends: 112111 [2018-10-24 14:03:04,458 INFO L605 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 [2018-10-24 14:03:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112111 states. [2018-10-24 14:03:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112111 to 109855. [2018-10-24 14:03:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109855 states. [2018-10-24 14:03:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109855 states to 109855 states and 121866 transitions. [2018-10-24 14:03:05,732 INFO L78 Accepts]: Start accepts. Automaton has 109855 states and 121866 transitions. Word has length 452 [2018-10-24 14:03:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:05,733 INFO L481 AbstractCegarLoop]: Abstraction has 109855 states and 121866 transitions. [2018-10-24 14:03:05,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:03:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 109855 states and 121866 transitions. [2018-10-24 14:03:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-10-24 14:03:05,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:05,773 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:05,773 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:05,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:05,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1812629239, now seen corresponding path program 1 times [2018-10-24 14:03:05,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:05,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:05,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:05,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:05,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:06,380 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-24 14:03:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2018-10-24 14:03:07,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:03:07,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:03:07,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:03:07,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:03:07,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:03:07,070 INFO L87 Difference]: Start difference. First operand 109855 states and 121866 transitions. Second operand 6 states. [2018-10-24 14:03:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:14,956 INFO L93 Difference]: Finished difference Result 219499 states and 243516 transitions. [2018-10-24 14:03:14,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:03:14,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 489 [2018-10-24 14:03:14,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:15,065 INFO L225 Difference]: With dead ends: 219499 [2018-10-24 14:03:15,065 INFO L226 Difference]: Without dead ends: 92319 [2018-10-24 14:03:15,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:03:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92319 states. [2018-10-24 14:03:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92319 to 87264. [2018-10-24 14:03:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87264 states. [2018-10-24 14:03:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87264 states to 87264 states and 92509 transitions. [2018-10-24 14:03:16,001 INFO L78 Accepts]: Start accepts. Automaton has 87264 states and 92509 transitions. Word has length 489 [2018-10-24 14:03:16,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:16,001 INFO L481 AbstractCegarLoop]: Abstraction has 87264 states and 92509 transitions. [2018-10-24 14:03:16,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:03:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 87264 states and 92509 transitions. [2018-10-24 14:03:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-24 14:03:16,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:16,025 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 14:03:16,025 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:16,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1826194161, now seen corresponding path program 1 times [2018-10-24 14:03:16,026 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:16,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:16,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:16,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:16,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2018-10-24 14:03:17,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:03:17,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:03:17,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:03:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:03:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:03:17,072 INFO L87 Difference]: Start difference. First operand 87264 states and 92509 transitions. Second operand 3 states. [2018-10-24 14:03:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:21,139 INFO L93 Difference]: Finished difference Result 175278 states and 185963 transitions. [2018-10-24 14:03:21,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:03:21,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-24 14:03:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:21,232 INFO L225 Difference]: With dead ends: 175278 [2018-10-24 14:03:21,232 INFO L226 Difference]: Without dead ends: 88768 [2018-10-24 14:03:21,278 INFO L605 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 [2018-10-24 14:03:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88768 states. [2018-10-24 14:03:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88768 to 84256. [2018-10-24 14:03:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84256 states. [2018-10-24 14:03:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84256 states to 84256 states and 88737 transitions. [2018-10-24 14:03:22,013 INFO L78 Accepts]: Start accepts. Automaton has 84256 states and 88737 transitions. Word has length 506 [2018-10-24 14:03:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:22,014 INFO L481 AbstractCegarLoop]: Abstraction has 84256 states and 88737 transitions. [2018-10-24 14:03:22,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:03:22,014 INFO L276 IsEmpty]: Start isEmpty. Operand 84256 states and 88737 transitions. [2018-10-24 14:03:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-10-24 14:03:22,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:22,050 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:22,050 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:22,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash 259889551, now seen corresponding path program 1 times [2018-10-24 14:03:22,051 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:22,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:22,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:22,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:22,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 593 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-10-24 14:03:22,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:03:22,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:03:22,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:03:22,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:03:22,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:03:22,665 INFO L87 Difference]: Start difference. First operand 84256 states and 88737 transitions. Second operand 4 states. [2018-10-24 14:03:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:30,319 INFO L93 Difference]: Finished difference Result 179790 states and 190361 transitions. [2018-10-24 14:03:30,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:03:30,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 586 [2018-10-24 14:03:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:30,427 INFO L225 Difference]: With dead ends: 179790 [2018-10-24 14:03:30,427 INFO L226 Difference]: Without dead ends: 96288 [2018-10-24 14:03:30,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 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 14:03:30,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96288 states. [2018-10-24 14:03:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96288 to 92528. [2018-10-24 14:03:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92528 states. [2018-10-24 14:03:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92528 states to 92528 states and 97141 transitions. [2018-10-24 14:03:31,338 INFO L78 Accepts]: Start accepts. Automaton has 92528 states and 97141 transitions. Word has length 586 [2018-10-24 14:03:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:31,342 INFO L481 AbstractCegarLoop]: Abstraction has 92528 states and 97141 transitions. [2018-10-24 14:03:31,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:03:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 92528 states and 97141 transitions. [2018-10-24 14:03:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-24 14:03:31,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:31,367 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:31,367 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:31,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash -353722807, now seen corresponding path program 1 times [2018-10-24 14:03:31,368 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:31,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:31,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:31,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:31,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:31,852 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:03:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-24 14:03:31,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:03:31,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:03:32,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:03:32,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:03:32,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:03:32,000 INFO L87 Difference]: Start difference. First operand 92528 states and 97141 transitions. Second operand 4 states. [2018-10-24 14:03:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:03:40,163 INFO L93 Difference]: Finished difference Result 196334 states and 206078 transitions. [2018-10-24 14:03:40,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:03:40,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 661 [2018-10-24 14:03:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:03:40,271 INFO L225 Difference]: With dead ends: 196334 [2018-10-24 14:03:40,271 INFO L226 Difference]: Without dead ends: 104560 [2018-10-24 14:03:40,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 14:03:40,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104560 states. [2018-10-24 14:03:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104560 to 99296. [2018-10-24 14:03:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99296 states. [2018-10-24 14:03:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99296 states to 99296 states and 103930 transitions. [2018-10-24 14:03:41,161 INFO L78 Accepts]: Start accepts. Automaton has 99296 states and 103930 transitions. Word has length 661 [2018-10-24 14:03:41,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:03:41,162 INFO L481 AbstractCegarLoop]: Abstraction has 99296 states and 103930 transitions. [2018-10-24 14:03:41,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:03:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 99296 states and 103930 transitions. [2018-10-24 14:03:41,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-10-24 14:03:41,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:03:41,184 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:41,184 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:03:41,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:03:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash 951502035, now seen corresponding path program 1 times [2018-10-24 14:03:41,185 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:03:41,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:03:41,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:41,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:41,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:03:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:42,164 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 14:03:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 593 proven. 262 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 14:03:43,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:03:43,303 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:03:43,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:03:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:03:43,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:03:44,436 WARN L179 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 24 [2018-10-24 14:04:11,950 WARN L179 SmtUtils]: Spent 27.10 s on a formula simplification. DAG size of input: 262 DAG size of output: 53 [2018-10-24 14:04:12,624 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-10-24 14:04:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 738 proven. 117 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-24 14:04:15,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:04:15,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2018-10-24 14:04:15,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:04:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:04:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:04:15,311 INFO L87 Difference]: Start difference. First operand 99296 states and 103930 transitions. Second operand 12 states. [2018-10-24 14:05:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:02,609 INFO L93 Difference]: Finished difference Result 266288 states and 278669 transitions. [2018-10-24 14:05:02,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 14:05:02,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 665 [2018-10-24 14:05:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:02,782 INFO L225 Difference]: With dead ends: 266288 [2018-10-24 14:05:02,783 INFO L226 Difference]: Without dead ends: 163979 [2018-10-24 14:05:02,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2018-10-24 14:05:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163979 states. [2018-10-24 14:05:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163979 to 153441. [2018-10-24 14:05:04,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153441 states. [2018-10-24 14:05:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153441 states to 153441 states and 159194 transitions. [2018-10-24 14:05:04,738 INFO L78 Accepts]: Start accepts. Automaton has 153441 states and 159194 transitions. Word has length 665 [2018-10-24 14:05:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:04,738 INFO L481 AbstractCegarLoop]: Abstraction has 153441 states and 159194 transitions. [2018-10-24 14:05:04,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:05:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 153441 states and 159194 transitions. [2018-10-24 14:05:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-10-24 14:05:04,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:04,762 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:04,762 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:04,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:04,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1217374838, now seen corresponding path program 1 times [2018-10-24 14:05:04,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:04,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:04,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:04,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:04,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 606 proven. 143 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-24 14:05:05,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:05,757 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:05:05,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:05,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 694 proven. 55 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-24 14:05:07,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:05:07,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-24 14:05:07,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:05:07,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:05:07,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:05:07,191 INFO L87 Difference]: Start difference. First operand 153441 states and 159194 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 14:05:12,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:05:12,050 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:05:12,055 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:05:12,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:05:12 BoogieIcfgContainer [2018-10-24 14:05:12,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:05:12,057 INFO L168 Benchmark]: Toolchain (without parser) took 236003.42 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -530.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 14:05:12,058 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:05:12,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2118.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:05:12,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 685.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:05:12,060 INFO L168 Benchmark]: Boogie Preprocessor took 361.49 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:05:12,061 INFO L168 Benchmark]: RCFGBuilder took 8986.71 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 227.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -192.2 MB). Peak memory consumption was 647.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:05:12,062 INFO L168 Benchmark]: TraceAbstraction took 223847.27 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 418.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:05:12,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2118.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 685.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 812.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 361.49 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8986.71 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 227.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -192.2 MB). Peak memory consumption was 647.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223847.27 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 418.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (153441states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (7052 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 223.7s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 170.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9516 SDtfs, 38480 SDslu, 1411 SDs, 0 SdLazy, 83723 SolverSat, 13059 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 140.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1611 GetRequests, 1535 SyntacticMatches, 11 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153441occurred in iteration=12, 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: 8.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 47955 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 39.2s InterpolantComputationTime, 6737 NumberOfCodeBlocks, 6737 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6721 ConstructedInterpolants, 292 QuantifiedInterpolants, 24235047 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1906 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 11 PerfectInterpolantSequences, 7929/8511 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown