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/Problem13_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:21:35,938 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:21:35,940 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:21:35,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:21:35,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:21:35,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:21:35,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:21:35,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:21:35,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:21:35,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:21:35,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:21:35,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:21:35,965 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:21:35,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:21:35,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:21:35,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:21:35,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:21:35,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:21:35,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:21:35,975 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:21:35,976 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:21:35,977 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:21:35,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:21:35,980 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:21:35,980 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:21:35,981 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:21:35,982 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:21:35,983 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:21:35,984 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:21:35,985 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:21:35,985 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:21:35,986 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 16:21:35,989 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 16:21:36,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:21:36,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:21:36,007 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:21:36,007 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:21:36,008 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:21:36,008 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:21:36,008 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:21:36,009 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:21:36,012 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:21:36,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:21:36,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:21:36,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:21:36,013 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:21:36,013 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:21:36,013 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:21:36,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:21:36,013 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:21:36,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:21:36,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:21:36,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:21:36,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:21:36,014 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:21:36,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:21:36,016 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:21:36,017 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:21:36,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:21:36,017 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:21:36,017 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:21:36,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:21:36,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:21:36,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:21:36,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:21:36,089 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:21:36,090 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-10-24 16:21:36,163 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c8302296/04d32f7950864cbf9ea466779eb78cc5/FLAGaed59c3dd [2018-10-24 16:21:37,025 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:21:37,026 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-10-24 16:21:37,079 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c8302296/04d32f7950864cbf9ea466779eb78cc5/FLAGaed59c3dd [2018-10-24 16:21:37,106 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c8302296/04d32f7950864cbf9ea466779eb78cc5 [2018-10-24 16:21:37,121 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:21:37,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:21:37,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:21:37,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:21:37,129 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:21:37,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:21:37" (1/1) ... [2018-10-24 16:21:37,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:37, skipping insertion in model container [2018-10-24 16:21:37,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:21:37" (1/1) ... [2018-10-24 16:21:37,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:21:37,328 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:21:38,822 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:21:38,827 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:21:39,651 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:21:39,692 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:21:39,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39 WrapperNode [2018-10-24 16:21:39,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:21:39,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:21:39,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:21:39,694 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:21:39,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:39,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:21:40,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:21:40,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:21:40,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:21:40,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:40,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (1/1) ... [2018-10-24 16:21:41,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:21:41,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:21:41,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:21:41,016 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:21:41,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (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 16:21:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:21:41,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:21:41,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:21:53,085 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:21:53,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:21:53 BoogieIcfgContainer [2018-10-24 16:21:53,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:21:53,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:21:53,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:21:53,090 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:21:53,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:21:37" (1/3) ... [2018-10-24 16:21:53,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb53a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:21:53, skipping insertion in model container [2018-10-24 16:21:53,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:21:39" (2/3) ... [2018-10-24 16:21:53,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb53a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:21:53, skipping insertion in model container [2018-10-24 16:21:53,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:21:53" (3/3) ... [2018-10-24 16:21:53,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22_true-unreach-call.c [2018-10-24 16:21:53,108 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:21:53,118 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:21:53,135 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:21:53,179 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:21:53,179 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:21:53,179 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:21:53,180 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:21:53,180 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:21:53,180 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:21:53,180 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:21:53,180 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:21:53,180 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:21:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:21:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-24 16:21:53,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:53,248 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] [2018-10-24 16:21:53,250 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:53,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash 575043410, now seen corresponding path program 1 times [2018-10-24 16:21:53,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:53,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:53,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:53,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:53,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:53,725 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 16:21:53,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:53,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:21:53,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:53,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:53,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:53,753 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:22:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:07,804 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 16:22:07,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:07,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-24 16:22:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:07,855 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 16:22:07,855 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 16:22:07,864 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 16:22:07,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 16:22:08,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 16:22:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 16:22:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 16:22:08,022 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 33 [2018-10-24 16:22:08,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:08,023 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 16:22:08,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 16:22:08,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 16:22:08,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:08,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:08,031 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:08,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash 405769897, now seen corresponding path program 1 times [2018-10-24 16:22:08,032 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:08,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:08,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:08,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:09,104 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:22:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:09,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:09,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:09,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:09,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:09,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:09,363 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 16:22:09,628 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:22:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:24,912 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 16:22:24,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:24,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-24 16:22:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:24,939 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 16:22:24,939 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 16:22:24,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:22:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 16:22:25,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 16:22:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 16:22:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 16:22:25,050 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 99 [2018-10-24 16:22:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:25,051 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 16:22:25,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:22:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 16:22:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 16:22:25,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:25,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:22:25,069 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:25,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:25,069 INFO L82 PathProgramCache]: Analyzing trace with hash 697216454, now seen corresponding path program 1 times [2018-10-24 16:22:25,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:25,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:25,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:25,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:25,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:25,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:22:25,316 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 16:22:25,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:25,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:22:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:25,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:22:25,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:22:25,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:22:25,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:22:25,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:22:25,580 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 6 states. [2018-10-24 16:22:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:52,098 INFO L93 Difference]: Finished difference Result 21526 states and 33845 transitions. [2018-10-24 16:22:52,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:22:52,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-10-24 16:22:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:52,184 INFO L225 Difference]: With dead ends: 21526 [2018-10-24 16:22:52,185 INFO L226 Difference]: Without dead ends: 17199 [2018-10-24 16:22:52,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:22:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2018-10-24 16:22:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 17008. [2018-10-24 16:22:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17008 states. [2018-10-24 16:22:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17008 states to 17008 states and 21511 transitions. [2018-10-24 16:22:52,512 INFO L78 Accepts]: Start accepts. Automaton has 17008 states and 21511 transitions. Word has length 159 [2018-10-24 16:22:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:52,513 INFO L481 AbstractCegarLoop]: Abstraction has 17008 states and 21511 transitions. [2018-10-24 16:22:52,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:22:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 17008 states and 21511 transitions. [2018-10-24 16:22:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 16:22:52,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:52,518 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 16:22:52,518 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:52,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:52,518 INFO L82 PathProgramCache]: Analyzing trace with hash -507178207, now seen corresponding path program 1 times [2018-10-24 16:22:52,519 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:52,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:52,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:52,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:52,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:22:53,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:53,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:53,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:53,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:53,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:53,022 INFO L87 Difference]: Start difference. First operand 17008 states and 21511 transitions. Second operand 5 states. [2018-10-24 16:23:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:09,655 INFO L93 Difference]: Finished difference Result 47698 states and 62253 transitions. [2018-10-24 16:23:09,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:23:09,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2018-10-24 16:23:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:09,741 INFO L225 Difference]: With dead ends: 47698 [2018-10-24 16:23:09,741 INFO L226 Difference]: Without dead ends: 31480 [2018-10-24 16:23:09,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31480 states. [2018-10-24 16:23:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31480 to 31316. [2018-10-24 16:23:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31316 states. [2018-10-24 16:23:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31316 states to 31316 states and 39611 transitions. [2018-10-24 16:23:10,290 INFO L78 Accepts]: Start accepts. Automaton has 31316 states and 39611 transitions. Word has length 206 [2018-10-24 16:23:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:10,291 INFO L481 AbstractCegarLoop]: Abstraction has 31316 states and 39611 transitions. [2018-10-24 16:23:10,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:23:10,291 INFO L276 IsEmpty]: Start isEmpty. Operand 31316 states and 39611 transitions. [2018-10-24 16:23:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-24 16:23:10,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:10,296 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:23:10,296 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:10,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:10,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1811477803, now seen corresponding path program 1 times [2018-10-24 16:23:10,297 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:10,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:10,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:10,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:10,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 16:23:10,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:23:10,635 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 16:23:10,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:10,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:23:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:23:10,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:23:10,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:23:10,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:10,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:10,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:10,846 INFO L87 Difference]: Start difference. First operand 31316 states and 39611 transitions. Second operand 4 states. [2018-10-24 16:23:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:24,254 INFO L93 Difference]: Finished difference Result 106831 states and 135959 transitions. [2018-10-24 16:23:24,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:24,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2018-10-24 16:23:24,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:24,397 INFO L225 Difference]: With dead ends: 106831 [2018-10-24 16:23:24,398 INFO L226 Difference]: Without dead ends: 76305 [2018-10-24 16:23:24,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 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 16:23:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76305 states. [2018-10-24 16:23:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76305 to 54950. [2018-10-24 16:23:25,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54950 states. [2018-10-24 16:23:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54950 states to 54950 states and 66506 transitions. [2018-10-24 16:23:25,444 INFO L78 Accepts]: Start accepts. Automaton has 54950 states and 66506 transitions. Word has length 210 [2018-10-24 16:23:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:25,445 INFO L481 AbstractCegarLoop]: Abstraction has 54950 states and 66506 transitions. [2018-10-24 16:23:25,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 54950 states and 66506 transitions. [2018-10-24 16:23:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-24 16:23:25,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:25,453 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:23:25,453 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:25,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:25,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1526348927, now seen corresponding path program 1 times [2018-10-24 16:23:25,454 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:25,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:25,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:25,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:25,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 16:23:25,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:25,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:25,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:25,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:25,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:25,911 INFO L87 Difference]: Start difference. First operand 54950 states and 66506 transitions. Second operand 4 states. [2018-10-24 16:23:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:37,521 INFO L93 Difference]: Finished difference Result 172142 states and 210044 transitions. [2018-10-24 16:23:37,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:37,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 283 [2018-10-24 16:23:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:37,679 INFO L225 Difference]: With dead ends: 172142 [2018-10-24 16:23:37,679 INFO L226 Difference]: Without dead ends: 117982 [2018-10-24 16:23:37,746 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 16:23:37,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117982 states. [2018-10-24 16:23:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117982 to 114036. [2018-10-24 16:23:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114036 states. [2018-10-24 16:23:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114036 states to 114036 states and 131329 transitions. [2018-10-24 16:23:39,040 INFO L78 Accepts]: Start accepts. Automaton has 114036 states and 131329 transitions. Word has length 283 [2018-10-24 16:23:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:39,041 INFO L481 AbstractCegarLoop]: Abstraction has 114036 states and 131329 transitions. [2018-10-24 16:23:39,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 114036 states and 131329 transitions. [2018-10-24 16:23:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-24 16:23:39,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:39,054 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:23:39,055 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:39,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:39,055 INFO L82 PathProgramCache]: Analyzing trace with hash -201881846, now seen corresponding path program 1 times [2018-10-24 16:23:39,055 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:39,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:39,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:39,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:39,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:39,741 WARN L179 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-24 16:23:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-24 16:23:39,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:39,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:39,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:39,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:39,870 INFO L87 Difference]: Start difference. First operand 114036 states and 131329 transitions. Second operand 4 states. [2018-10-24 16:23:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:51,748 INFO L93 Difference]: Finished difference Result 347099 states and 398033 transitions. [2018-10-24 16:23:51,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:51,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2018-10-24 16:23:51,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:52,070 INFO L225 Difference]: With dead ends: 347099 [2018-10-24 16:23:52,070 INFO L226 Difference]: Without dead ends: 222008 [2018-10-24 16:23:52,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222008 states. [2018-10-24 16:23:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222008 to 214081. [2018-10-24 16:23:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214081 states. [2018-10-24 16:23:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214081 states to 214081 states and 237637 transitions. [2018-10-24 16:23:55,035 INFO L78 Accepts]: Start accepts. Automaton has 214081 states and 237637 transitions. Word has length 338 [2018-10-24 16:23:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:55,035 INFO L481 AbstractCegarLoop]: Abstraction has 214081 states and 237637 transitions. [2018-10-24 16:23:55,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 214081 states and 237637 transitions. [2018-10-24 16:23:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-10-24 16:23:55,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:55,048 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:55,049 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:55,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash -844714630, now seen corresponding path program 1 times [2018-10-24 16:23:55,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:55,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:55,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:55,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:55,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:55,505 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:23:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 390 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-24 16:23:55,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:55,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:55,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:55,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:55,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:55,705 INFO L87 Difference]: Start difference. First operand 214081 states and 237637 transitions. Second operand 4 states. [2018-10-24 16:24:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:06,126 INFO L93 Difference]: Finished difference Result 443921 states and 491995 transitions. [2018-10-24 16:24:06,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:06,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 384 [2018-10-24 16:24:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:06,403 INFO L225 Difference]: With dead ends: 443921 [2018-10-24 16:24:06,403 INFO L226 Difference]: Without dead ends: 202963 [2018-10-24 16:24:06,520 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 16:24:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202963 states. [2018-10-24 16:24:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202963 to 187985. [2018-10-24 16:24:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187985 states. [2018-10-24 16:24:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187985 states to 187985 states and 207463 transitions. [2018-10-24 16:24:10,094 INFO L78 Accepts]: Start accepts. Automaton has 187985 states and 207463 transitions. Word has length 384 [2018-10-24 16:24:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:10,095 INFO L481 AbstractCegarLoop]: Abstraction has 187985 states and 207463 transitions. [2018-10-24 16:24:10,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 187985 states and 207463 transitions. [2018-10-24 16:24:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-24 16:24:10,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:10,107 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:10,107 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:10,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1910407997, now seen corresponding path program 1 times [2018-10-24 16:24:10,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:10,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:10,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:10,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:10,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-24 16:24:10,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:10,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:10,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:10,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:10,714 INFO L87 Difference]: Start difference. First operand 187985 states and 207463 transitions. Second operand 4 states. [2018-10-24 16:24:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:20,815 INFO L93 Difference]: Finished difference Result 375217 states and 413989 transitions. [2018-10-24 16:24:20,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:20,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 410 [2018-10-24 16:24:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:21,051 INFO L225 Difference]: With dead ends: 375217 [2018-10-24 16:24:21,051 INFO L226 Difference]: Without dead ends: 186441 [2018-10-24 16:24:22,749 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 16:24:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186441 states. [2018-10-24 16:24:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186441 to 183244. [2018-10-24 16:24:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183244 states. [2018-10-24 16:24:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183244 states to 183244 states and 195824 transitions. [2018-10-24 16:24:24,315 INFO L78 Accepts]: Start accepts. Automaton has 183244 states and 195824 transitions. Word has length 410 [2018-10-24 16:24:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:24,315 INFO L481 AbstractCegarLoop]: Abstraction has 183244 states and 195824 transitions. [2018-10-24 16:24:24,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 183244 states and 195824 transitions. [2018-10-24 16:24:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-10-24 16:24:24,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:24,322 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 16:24:24,322 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:24,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:24,323 INFO L82 PathProgramCache]: Analyzing trace with hash 74242425, now seen corresponding path program 1 times [2018-10-24 16:24:24,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:24,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:24,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:24,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:24,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:24:26,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:26,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:26,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:26,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:26,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:26,392 INFO L87 Difference]: Start difference. First operand 183244 states and 195824 transitions. Second operand 4 states. [2018-10-24 16:24:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:35,525 INFO L93 Difference]: Finished difference Result 359354 states and 384310 transitions. [2018-10-24 16:24:35,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:35,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 440 [2018-10-24 16:24:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:35,752 INFO L225 Difference]: With dead ends: 359354 [2018-10-24 16:24:35,752 INFO L226 Difference]: Without dead ends: 176900 [2018-10-24 16:24:35,812 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 16:24:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176900 states. [2018-10-24 16:24:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176900 to 167442. [2018-10-24 16:24:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167442 states. [2018-10-24 16:24:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167442 states to 167442 states and 175277 transitions. [2018-10-24 16:24:43,283 INFO L78 Accepts]: Start accepts. Automaton has 167442 states and 175277 transitions. Word has length 440 [2018-10-24 16:24:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:43,284 INFO L481 AbstractCegarLoop]: Abstraction has 167442 states and 175277 transitions. [2018-10-24 16:24:43,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 167442 states and 175277 transitions. [2018-10-24 16:24:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-10-24 16:24:43,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:43,313 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:24:43,313 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:43,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:43,313 INFO L82 PathProgramCache]: Analyzing trace with hash -296508079, now seen corresponding path program 1 times [2018-10-24 16:24:43,313 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:43,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:43,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:43,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:43,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 1002 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2018-10-24 16:24:44,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:44,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:44,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:44,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:44,270 INFO L87 Difference]: Start difference. First operand 167442 states and 175277 transitions. Second operand 4 states. [2018-10-24 16:24:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:55,654 INFO L93 Difference]: Finished difference Result 416058 states and 437106 transitions. [2018-10-24 16:24:55,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:55,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 627 [2018-10-24 16:24:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:55,973 INFO L225 Difference]: With dead ends: 416058 [2018-10-24 16:24:55,973 INFO L226 Difference]: Without dead ends: 249406 [2018-10-24 16:24:56,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:56,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249406 states. [2018-10-24 16:24:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249406 to 239924. [2018-10-24 16:24:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239924 states. [2018-10-24 16:24:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239924 states to 239924 states and 250055 transitions. [2018-10-24 16:24:59,847 INFO L78 Accepts]: Start accepts. Automaton has 239924 states and 250055 transitions. Word has length 627 [2018-10-24 16:24:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:59,849 INFO L481 AbstractCegarLoop]: Abstraction has 239924 states and 250055 transitions. [2018-10-24 16:24:59,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 239924 states and 250055 transitions. [2018-10-24 16:24:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2018-10-24 16:24:59,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:59,890 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:24:59,890 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:59,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:59,891 INFO L82 PathProgramCache]: Analyzing trace with hash 401947253, now seen corresponding path program 1 times [2018-10-24 16:24:59,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:59,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:59,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:59,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:59,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-24 16:25:01,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:01,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:01,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:01,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:01,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:01,329 INFO L87 Difference]: Start difference. First operand 239924 states and 250055 transitions. Second operand 4 states. [2018-10-24 16:25:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:10,806 INFO L93 Difference]: Finished difference Result 480645 states and 500928 transitions. [2018-10-24 16:25:10,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:10,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 731 [2018-10-24 16:25:10,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:11,110 INFO L225 Difference]: With dead ends: 480645 [2018-10-24 16:25:11,110 INFO L226 Difference]: Without dead ends: 241511 [2018-10-24 16:25:11,244 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 16:25:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241511 states. [2018-10-24 16:25:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241511 to 233615. [2018-10-24 16:25:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233615 states. [2018-10-24 16:25:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233615 states to 233615 states and 241385 transitions. [2018-10-24 16:25:14,968 INFO L78 Accepts]: Start accepts. Automaton has 233615 states and 241385 transitions. Word has length 731 [2018-10-24 16:25:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:14,969 INFO L481 AbstractCegarLoop]: Abstraction has 233615 states and 241385 transitions. [2018-10-24 16:25:14,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 233615 states and 241385 transitions. [2018-10-24 16:25:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2018-10-24 16:25:15,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:15,003 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:15,003 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:15,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash 975721597, now seen corresponding path program 1 times [2018-10-24 16:25:15,004 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:15,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:15,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:15,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:15,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:16,058 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-24 16:25:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 154 proven. 632 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:25:17,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:25:17,552 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 16:25:17,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:17,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:25:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1061 backedges. 673 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-10-24 16:25:18,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:25:18,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-24 16:25:18,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 16:25:18,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 16:25:18,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:25:18,865 INFO L87 Difference]: Start difference. First operand 233615 states and 241385 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 16:25:21,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:25:21,680 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:25:21,685 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:25:21,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:25:21 BoogieIcfgContainer [2018-10-24 16:25:21,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:25:21,686 INFO L168 Benchmark]: Toolchain (without parser) took 224563.80 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -142.0 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-24 16:25:21,687 INFO L168 Benchmark]: CDTParser took 0.24 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 16:25:21,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2568.44 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:21,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 846.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.0 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 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:21,689 INFO L168 Benchmark]: Boogie Preprocessor took 474.83 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: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:21,690 INFO L168 Benchmark]: RCFGBuilder took 12070.47 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 252.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 35.0 MB). Peak memory consumption was 606.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:25:21,691 INFO L168 Benchmark]: TraceAbstraction took 208598.14 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 528.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 16:25:21,703 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2568.44 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 846.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.0 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 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 474.83 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: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12070.47 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 252.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 35.0 MB). Peak memory consumption was 606.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208598.14 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 528.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (233615states) and FLOYD_HOARE automaton (currently 5 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (1616 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 208.5s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 167.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8914 SDtfs, 34533 SDslu, 3199 SDs, 0 SdLazy, 67308 SolverSat, 18396 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 133.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1241 GetRequests, 1188 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239924occurred in iteration=11, 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: 26.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 79440 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 5895 NumberOfCodeBlocks, 5895 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5879 ConstructedInterpolants, 90 QuantifiedInterpolants, 9524249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1521 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 6780/7441 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown