./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd6d4490a7412402195d3193de0347508566f7c8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 10:06:41,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 10:06:41,890 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 10:06:41,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 10:06:41,910 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 10:06:41,912 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 10:06:41,913 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 10:06:41,917 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 10:06:41,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 10:06:41,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 10:06:41,924 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 10:06:41,924 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 10:06:41,925 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 10:06:41,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 10:06:41,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 10:06:41,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 10:06:41,938 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 10:06:41,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 10:06:41,948 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 10:06:41,951 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 10:06:41,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 10:06:41,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 10:06:41,960 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 10:06:41,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 10:06:41,963 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 10:06:41,964 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 10:06:41,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 10:06:41,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 10:06:41,967 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 10:06:41,968 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 10:06:41,968 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 10:06:41,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 10:06:41,969 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 10:06:41,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 10:06:41,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 10:06:41,972 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 10:06:41,972 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 10:06:42,001 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 10:06:42,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 10:06:42,003 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 10:06:42,003 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 10:06:42,003 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 10:06:42,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 10:06:42,003 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 10:06:42,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 10:06:42,004 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 10:06:42,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 10:06:42,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 10:06:42,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 10:06:42,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 10:06:42,005 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 10:06:42,007 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 10:06:42,007 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 10:06:42,007 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 10:06:42,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 10:06:42,008 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 10:06:42,008 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 10:06:42,008 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 10:06:42,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:06:42,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 10:06:42,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 10:06:42,009 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 10:06:42,009 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 10:06:42,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 10:06:42,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 10:06:42,010 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6d4490a7412402195d3193de0347508566f7c8 [2018-12-31 10:06:42,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 10:06:42,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 10:06:42,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 10:06:42,082 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 10:06:42,082 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 10:06:42,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-12-31 10:06:42,143 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c70383239/d637b08d27ae4e519ec1a2fd3434bba2/FLAGfd91ad704 [2018-12-31 10:06:42,562 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 10:06:42,562 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-12-31 10:06:42,569 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c70383239/d637b08d27ae4e519ec1a2fd3434bba2/FLAGfd91ad704 [2018-12-31 10:06:42,931 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c70383239/d637b08d27ae4e519ec1a2fd3434bba2 [2018-12-31 10:06:42,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 10:06:42,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 10:06:42,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 10:06:42,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 10:06:42,943 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 10:06:42,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:06:42" (1/1) ... [2018-12-31 10:06:42,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0d44a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:42, skipping insertion in model container [2018-12-31 10:06:42,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:06:42" (1/1) ... [2018-12-31 10:06:42,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 10:06:42,976 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 10:06:43,202 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:06:43,210 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 10:06:43,237 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:06:43,256 INFO L195 MainTranslator]: Completed translation [2018-12-31 10:06:43,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43 WrapperNode [2018-12-31 10:06:43,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 10:06:43,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 10:06:43,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 10:06:43,260 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 10:06:43,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 10:06:43,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 10:06:43,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 10:06:43,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 10:06:43,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... [2018-12-31 10:06:43,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 10:06:43,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 10:06:43,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 10:06:43,343 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 10:06:43,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:06:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 10:06:43,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 10:06:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-12-31 10:06:43,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-12-31 10:06:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-12-31 10:06:43,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-12-31 10:06:43,832 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 10:06:43,833 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 10:06:43,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:06:43 BoogieIcfgContainer [2018-12-31 10:06:43,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 10:06:43,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 10:06:43,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 10:06:43,839 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 10:06:43,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 10:06:42" (1/3) ... [2018-12-31 10:06:43,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfb66d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:06:43, skipping insertion in model container [2018-12-31 10:06:43,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:06:43" (2/3) ... [2018-12-31 10:06:43,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfb66d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:06:43, skipping insertion in model container [2018-12-31 10:06:43,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:06:43" (3/3) ... [2018-12-31 10:06:43,845 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8_true-unreach-call_true-termination.c [2018-12-31 10:06:43,857 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 10:06:43,866 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 10:06:43,885 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 10:06:43,918 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 10:06:43,918 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 10:06:43,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 10:06:43,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 10:06:43,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 10:06:43,919 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 10:06:43,919 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 10:06:43,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 10:06:43,919 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 10:06:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-12-31 10:06:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 10:06:43,944 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:43,945 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:43,947 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:43,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1871295635, now seen corresponding path program 1 times [2018-12-31 10:06:43,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:43,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:44,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:44,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:44,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 10:06:44,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 10:06:44,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 10:06:44,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 10:06:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 10:06:44,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 10:06:44,188 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-12-31 10:06:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:44,358 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2018-12-31 10:06:44,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 10:06:44,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-12-31 10:06:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:44,373 INFO L225 Difference]: With dead ends: 38 [2018-12-31 10:06:44,374 INFO L226 Difference]: Without dead ends: 26 [2018-12-31 10:06:44,377 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 10:06:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-31 10:06:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-31 10:06:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 10:06:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2018-12-31 10:06:44,423 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2018-12-31 10:06:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:44,423 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2018-12-31 10:06:44,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 10:06:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2018-12-31 10:06:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 10:06:44,426 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:44,426 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:44,426 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:44,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1404217650, now seen corresponding path program 1 times [2018-12-31 10:06:44,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:44,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:44,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:44,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:44,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 10:06:44,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 10:06:44,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 10:06:44,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 10:06:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 10:06:44,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 10:06:44,515 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 5 states. [2018-12-31 10:06:44,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:44,832 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2018-12-31 10:06:44,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 10:06:44,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-31 10:06:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:44,834 INFO L225 Difference]: With dead ends: 32 [2018-12-31 10:06:44,835 INFO L226 Difference]: Without dead ends: 28 [2018-12-31 10:06:44,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 10:06:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-31 10:06:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-12-31 10:06:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 10:06:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2018-12-31 10:06:44,846 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2018-12-31 10:06:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:44,846 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2018-12-31 10:06:44,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 10:06:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2018-12-31 10:06:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-31 10:06:44,848 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:44,848 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:44,848 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:44,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1629927371, now seen corresponding path program 1 times [2018-12-31 10:06:44,849 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:44,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:44,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:44,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:44,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 10:06:45,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:45,011 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:45,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:45,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 10:06:45,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:45,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-12-31 10:06:45,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-31 10:06:45,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-31 10:06:45,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-12-31 10:06:45,207 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 9 states. [2018-12-31 10:06:45,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:45,942 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2018-12-31 10:06:45,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 10:06:45,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-12-31 10:06:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:45,945 INFO L225 Difference]: With dead ends: 54 [2018-12-31 10:06:45,945 INFO L226 Difference]: Without dead ends: 30 [2018-12-31 10:06:45,947 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-12-31 10:06:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-31 10:06:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-12-31 10:06:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-31 10:06:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2018-12-31 10:06:45,957 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 22 [2018-12-31 10:06:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:45,958 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2018-12-31 10:06:45,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-31 10:06:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2018-12-31 10:06:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-31 10:06:45,960 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:45,961 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:45,962 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:45,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1285987244, now seen corresponding path program 1 times [2018-12-31 10:06:45,963 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:45,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:45,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:45,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:45,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 10:06:46,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:46,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:46,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:46,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-31 10:06:46,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:46,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-31 10:06:46,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-31 10:06:46,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-31 10:06:46,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-31 10:06:46,244 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 7 states. [2018-12-31 10:06:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:46,482 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2018-12-31 10:06:46,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 10:06:46,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-31 10:06:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:46,486 INFO L225 Difference]: With dead ends: 39 [2018-12-31 10:06:46,486 INFO L226 Difference]: Without dead ends: 35 [2018-12-31 10:06:46,487 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-31 10:06:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-31 10:06:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-31 10:06:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-31 10:06:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2018-12-31 10:06:46,503 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 23 [2018-12-31 10:06:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:46,505 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2018-12-31 10:06:46,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-31 10:06:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2018-12-31 10:06:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-31 10:06:46,509 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:46,509 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:46,510 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:46,511 INFO L82 PathProgramCache]: Analyzing trace with hash -649262923, now seen corresponding path program 1 times [2018-12-31 10:06:46,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:46,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:46,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:46,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:46,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-31 10:06:46,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:46,637 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:46,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:46,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-31 10:06:46,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:46,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2018-12-31 10:06:46,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 10:06:46,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 10:06:46,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:06:46,856 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 10 states. [2018-12-31 10:06:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:47,209 INFO L93 Difference]: Finished difference Result 66 states and 96 transitions. [2018-12-31 10:06:47,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-31 10:06:47,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-31 10:06:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:47,214 INFO L225 Difference]: With dead ends: 66 [2018-12-31 10:06:47,214 INFO L226 Difference]: Without dead ends: 35 [2018-12-31 10:06:47,215 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-12-31 10:06:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-31 10:06:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-31 10:06:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-31 10:06:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2018-12-31 10:06:47,225 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 35 [2018-12-31 10:06:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:47,225 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-12-31 10:06:47,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 10:06:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2018-12-31 10:06:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-31 10:06:47,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:47,227 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:47,228 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash 2000747716, now seen corresponding path program 1 times [2018-12-31 10:06:47,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:47,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:47,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:47,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:47,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-31 10:06:47,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:47,314 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:47,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:47,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-31 10:06:47,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:47,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-12-31 10:06:47,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 10:06:47,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 10:06:47,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:06:47,444 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 10 states. [2018-12-31 10:06:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:47,771 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2018-12-31 10:06:47,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 10:06:47,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2018-12-31 10:06:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:47,775 INFO L225 Difference]: With dead ends: 57 [2018-12-31 10:06:47,775 INFO L226 Difference]: Without dead ends: 53 [2018-12-31 10:06:47,776 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-12-31 10:06:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-31 10:06:47,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2018-12-31 10:06:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-31 10:06:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2018-12-31 10:06:47,788 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 36 [2018-12-31 10:06:47,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:47,788 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2018-12-31 10:06:47,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 10:06:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2018-12-31 10:06:47,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-31 10:06:47,791 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:47,791 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:47,791 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:47,792 INFO L82 PathProgramCache]: Analyzing trace with hash -434541687, now seen corresponding path program 1 times [2018-12-31 10:06:47,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:47,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:47,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:47,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:47,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-12-31 10:06:48,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:48,022 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:48,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:48,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-12-31 10:06:48,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:48,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-12-31 10:06:48,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 10:06:48,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 10:06:48,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:06:48,167 INFO L87 Difference]: Start difference. First operand 40 states and 56 transitions. Second operand 10 states. [2018-12-31 10:06:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:48,578 INFO L93 Difference]: Finished difference Result 67 states and 114 transitions. [2018-12-31 10:06:48,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 10:06:48,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-12-31 10:06:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:48,581 INFO L225 Difference]: With dead ends: 67 [2018-12-31 10:06:48,582 INFO L226 Difference]: Without dead ends: 63 [2018-12-31 10:06:48,582 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-12-31 10:06:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-31 10:06:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 45. [2018-12-31 10:06:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-31 10:06:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 67 transitions. [2018-12-31 10:06:48,597 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 67 transitions. Word has length 50 [2018-12-31 10:06:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:48,597 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 67 transitions. [2018-12-31 10:06:48,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 10:06:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 67 transitions. [2018-12-31 10:06:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-12-31 10:06:48,601 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:48,601 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:48,601 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1353550601, now seen corresponding path program 2 times [2018-12-31 10:06:48,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:48,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:48,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:48,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:48,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-12-31 10:06:48,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:48,780 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:48,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 10:06:48,837 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 10:06:48,837 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:06:48,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 63 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-12-31 10:06:49,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:49,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2018-12-31 10:06:49,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-31 10:06:49,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-31 10:06:49,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-12-31 10:06:49,051 INFO L87 Difference]: Start difference. First operand 45 states and 67 transitions. Second operand 16 states. [2018-12-31 10:06:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:50,130 INFO L93 Difference]: Finished difference Result 142 states and 295 transitions. [2018-12-31 10:06:50,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-31 10:06:50,132 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2018-12-31 10:06:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:50,136 INFO L225 Difference]: With dead ends: 142 [2018-12-31 10:06:50,136 INFO L226 Difference]: Without dead ends: 99 [2018-12-31 10:06:50,140 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2018-12-31 10:06:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-12-31 10:06:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2018-12-31 10:06:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-12-31 10:06:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 153 transitions. [2018-12-31 10:06:50,186 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 153 transitions. Word has length 76 [2018-12-31 10:06:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:50,190 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 153 transitions. [2018-12-31 10:06:50,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-31 10:06:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 153 transitions. [2018-12-31 10:06:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-12-31 10:06:50,203 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:50,205 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:50,205 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:50,206 INFO L82 PathProgramCache]: Analyzing trace with hash 2005756209, now seen corresponding path program 1 times [2018-12-31 10:06:50,206 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:50,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:50,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:50,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:06:50,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 77 proven. 154 refuted. 0 times theorem prover too weak. 419 trivial. 0 not checked. [2018-12-31 10:06:50,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:50,518 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:50,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:50,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 40 proven. 230 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-12-31 10:06:51,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:51,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-12-31 10:06:51,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-31 10:06:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-31 10:06:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-12-31 10:06:51,085 INFO L87 Difference]: Start difference. First operand 83 states and 153 transitions. Second operand 18 states. [2018-12-31 10:06:51,961 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-12-31 10:06:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:52,833 INFO L93 Difference]: Finished difference Result 228 states and 516 transitions. [2018-12-31 10:06:52,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-31 10:06:52,834 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2018-12-31 10:06:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:52,837 INFO L225 Difference]: With dead ends: 228 [2018-12-31 10:06:52,837 INFO L226 Difference]: Without dead ends: 125 [2018-12-31 10:06:52,841 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2018-12-31 10:06:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-12-31 10:06:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 114. [2018-12-31 10:06:52,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-12-31 10:06:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 180 transitions. [2018-12-31 10:06:52,887 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 180 transitions. Word has length 158 [2018-12-31 10:06:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:52,888 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 180 transitions. [2018-12-31 10:06:52,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-31 10:06:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 180 transitions. [2018-12-31 10:06:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-12-31 10:06:52,903 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:52,906 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 16, 16, 15, 13, 11, 11, 11, 11, 11, 11, 11, 10, 8, 8, 8, 8, 8, 8, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:52,906 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:52,907 INFO L82 PathProgramCache]: Analyzing trace with hash 461738060, now seen corresponding path program 2 times [2018-12-31 10:06:52,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:52,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:52,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:52,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:06:52,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 336 proven. 113 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2018-12-31 10:06:53,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:53,227 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:53,239 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 10:06:53,320 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 10:06:53,320 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:06:53,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 91 proven. 518 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2018-12-31 10:06:53,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:53,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-12-31 10:06:53,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-31 10:06:53,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-31 10:06:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2018-12-31 10:06:53,696 INFO L87 Difference]: Start difference. First operand 114 states and 180 transitions. Second operand 18 states. [2018-12-31 10:06:54,487 WARN L181 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-12-31 10:06:54,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:54,812 INFO L93 Difference]: Finished difference Result 273 states and 492 transitions. [2018-12-31 10:06:54,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-31 10:06:54,812 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 265 [2018-12-31 10:06:54,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:54,815 INFO L225 Difference]: With dead ends: 273 [2018-12-31 10:06:54,815 INFO L226 Difference]: Without dead ends: 154 [2018-12-31 10:06:54,819 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2018-12-31 10:06:54,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-12-31 10:06:54,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2018-12-31 10:06:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-12-31 10:06:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 244 transitions. [2018-12-31 10:06:54,848 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 244 transitions. Word has length 265 [2018-12-31 10:06:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:54,848 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 244 transitions. [2018-12-31 10:06:54,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-31 10:06:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 244 transitions. [2018-12-31 10:06:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-12-31 10:06:54,856 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:54,856 INFO L402 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 21, 19, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:54,857 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1599532224, now seen corresponding path program 3 times [2018-12-31 10:06:54,857 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:54,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:54,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:54,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:06:54,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 242 proven. 652 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2018-12-31 10:06:55,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:55,264 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:55,273 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 10:06:55,360 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-31 10:06:55,360 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:06:55,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 675 proven. 33 refuted. 0 times theorem prover too weak. 2749 trivial. 0 not checked. [2018-12-31 10:06:55,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:55,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 17 [2018-12-31 10:06:55,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-31 10:06:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-31 10:06:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-12-31 10:06:55,585 INFO L87 Difference]: Start difference. First operand 143 states and 244 transitions. Second operand 17 states. [2018-12-31 10:06:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:57,177 INFO L93 Difference]: Finished difference Result 342 states and 676 transitions. [2018-12-31 10:06:57,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-31 10:06:57,179 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 349 [2018-12-31 10:06:57,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:57,186 INFO L225 Difference]: With dead ends: 342 [2018-12-31 10:06:57,186 INFO L226 Difference]: Without dead ends: 182 [2018-12-31 10:06:57,190 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2018-12-31 10:06:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-12-31 10:06:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2018-12-31 10:06:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-12-31 10:06:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 288 transitions. [2018-12-31 10:06:57,222 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 288 transitions. Word has length 349 [2018-12-31 10:06:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:57,225 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 288 transitions. [2018-12-31 10:06:57,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-31 10:06:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 288 transitions. [2018-12-31 10:06:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-12-31 10:06:57,247 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:57,247 INFO L402 BasicCegarLoop]: trace histogram [51, 51, 48, 32, 32, 32, 30, 25, 25, 25, 25, 25, 25, 25, 16, 16, 16, 16, 16, 16, 16, 5, 3, 2, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:57,248 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:57,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1849554442, now seen corresponding path program 4 times [2018-12-31 10:06:57,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:57,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:57,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:57,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:06:57,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10327 backedges. 298 proven. 839 refuted. 0 times theorem prover too weak. 9190 trivial. 0 not checked. [2018-12-31 10:06:57,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:57,663 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:57,674 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 10:06:57,797 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 10:06:57,797 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:06:57,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:06:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10327 backedges. 304 proven. 1237 refuted. 0 times theorem prover too weak. 8786 trivial. 0 not checked. [2018-12-31 10:06:58,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:06:58,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 15 [2018-12-31 10:06:58,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-31 10:06:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-31 10:06:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-12-31 10:06:58,282 INFO L87 Difference]: Start difference. First operand 176 states and 288 transitions. Second operand 15 states. [2018-12-31 10:06:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:06:58,965 INFO L93 Difference]: Finished difference Result 434 states and 916 transitions. [2018-12-31 10:06:58,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-31 10:06:58,966 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 579 [2018-12-31 10:06:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:06:58,970 INFO L225 Difference]: With dead ends: 434 [2018-12-31 10:06:58,970 INFO L226 Difference]: Without dead ends: 183 [2018-12-31 10:06:58,974 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2018-12-31 10:06:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-12-31 10:06:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2018-12-31 10:06:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-12-31 10:06:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2018-12-31 10:06:58,992 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 579 [2018-12-31 10:06:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:06:58,992 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2018-12-31 10:06:58,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-31 10:06:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2018-12-31 10:06:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2018-12-31 10:06:58,998 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:06:58,999 INFO L402 BasicCegarLoop]: trace histogram [59, 59, 42, 38, 38, 35, 29, 29, 29, 29, 29, 29, 29, 23, 19, 19, 19, 19, 19, 19, 19, 17, 6, 3, 1, 1, 1, 1, 1, 1] [2018-12-31 10:06:58,999 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:06:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:06:58,999 INFO L82 PathProgramCache]: Analyzing trace with hash -362917262, now seen corresponding path program 5 times [2018-12-31 10:06:58,999 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:06:59,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:06:59,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:59,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:06:59,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:06:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:06:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13420 backedges. 624 proven. 693 refuted. 0 times theorem prover too weak. 12103 trivial. 0 not checked. [2018-12-31 10:06:59,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:06:59,575 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:06:59,584 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 10:06:59,671 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-12-31 10:06:59,671 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:06:59,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13420 backedges. 4154 proven. 18 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2018-12-31 10:07:00,162 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:00,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2018-12-31 10:07:00,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-31 10:07:00,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-31 10:07:00,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-12-31 10:07:00,164 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand 16 states. [2018-12-31 10:07:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:00,620 INFO L93 Difference]: Finished difference Result 362 states and 617 transitions. [2018-12-31 10:07:00,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-31 10:07:00,621 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 662 [2018-12-31 10:07:00,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:00,626 INFO L225 Difference]: With dead ends: 362 [2018-12-31 10:07:00,626 INFO L226 Difference]: Without dead ends: 159 [2018-12-31 10:07:00,628 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 657 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2018-12-31 10:07:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-12-31 10:07:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2018-12-31 10:07:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-12-31 10:07:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 229 transitions. [2018-12-31 10:07:00,643 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 229 transitions. Word has length 662 [2018-12-31 10:07:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:00,643 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 229 transitions. [2018-12-31 10:07:00,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-31 10:07:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 229 transitions. [2018-12-31 10:07:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-12-31 10:07:00,647 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:00,647 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 26, 26, 24, 22, 15, 15, 15, 15, 15, 15, 15, 13, 13, 13, 13, 13, 13, 13, 11, 7, 7, 4, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:00,648 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:00,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:00,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1000880167, now seen corresponding path program 6 times [2018-12-31 10:07:00,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:00,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:00,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:00,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:00,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 552 proven. 153 refuted. 0 times theorem prover too weak. 3694 trivial. 0 not checked. [2018-12-31 10:07:01,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:01,492 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:01,503 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 10:07:01,715 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-31 10:07:01,716 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:01,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4399 backedges. 608 proven. 97 refuted. 0 times theorem prover too weak. 3694 trivial. 0 not checked. [2018-12-31 10:07:02,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:02,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-12-31 10:07:02,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-31 10:07:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-31 10:07:02,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-12-31 10:07:02,285 INFO L87 Difference]: Start difference. First operand 153 states and 229 transitions. Second operand 12 states. [2018-12-31 10:07:02,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:02,634 INFO L93 Difference]: Finished difference Result 163 states and 238 transitions. [2018-12-31 10:07:02,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 10:07:02,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 391 [2018-12-31 10:07:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:02,640 INFO L225 Difference]: With dead ends: 163 [2018-12-31 10:07:02,640 INFO L226 Difference]: Without dead ends: 151 [2018-12-31 10:07:02,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-12-31 10:07:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-12-31 10:07:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-12-31 10:07:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-12-31 10:07:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 216 transitions. [2018-12-31 10:07:02,653 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 216 transitions. Word has length 391 [2018-12-31 10:07:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:02,654 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 216 transitions. [2018-12-31 10:07:02,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-31 10:07:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 216 transitions. [2018-12-31 10:07:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-12-31 10:07:02,660 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:02,661 INFO L402 BasicCegarLoop]: trace histogram [55, 55, 48, 48, 42, 40, 27, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 16, 15, 15, 6, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:02,661 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:02,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1252242754, now seen corresponding path program 7 times [2018-12-31 10:07:02,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:02,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:02,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:02,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:02,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14601 backedges. 1176 proven. 764 refuted. 0 times theorem prover too weak. 12661 trivial. 0 not checked. [2018-12-31 10:07:03,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:03,249 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:03,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:03,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14601 backedges. 678 proven. 1259 refuted. 0 times theorem prover too weak. 12664 trivial. 0 not checked. [2018-12-31 10:07:04,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:04,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 17 [2018-12-31 10:07:04,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-31 10:07:04,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-31 10:07:04,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2018-12-31 10:07:04,632 INFO L87 Difference]: Start difference. First operand 151 states and 216 transitions. Second operand 17 states. [2018-12-31 10:07:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:05,318 INFO L93 Difference]: Finished difference Result 200 states and 318 transitions. [2018-12-31 10:07:05,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-31 10:07:05,319 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 703 [2018-12-31 10:07:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:05,325 INFO L225 Difference]: With dead ends: 200 [2018-12-31 10:07:05,326 INFO L226 Difference]: Without dead ends: 157 [2018-12-31 10:07:05,328 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 705 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-12-31 10:07:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-12-31 10:07:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-12-31 10:07:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-12-31 10:07:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 219 transitions. [2018-12-31 10:07:05,352 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 219 transitions. Word has length 703 [2018-12-31 10:07:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:05,353 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 219 transitions. [2018-12-31 10:07:05,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-31 10:07:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 219 transitions. [2018-12-31 10:07:05,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-12-31 10:07:05,362 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:05,362 INFO L402 BasicCegarLoop]: trace histogram [35, 35, 32, 32, 28, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 12, 10, 7, 5, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:05,362 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:05,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1107936031, now seen corresponding path program 8 times [2018-12-31 10:07:05,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:05,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:05,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:05,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:05,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 579 proven. 118 refuted. 0 times theorem prover too weak. 5420 trivial. 0 not checked. [2018-12-31 10:07:05,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:05,673 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:05,688 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 10:07:05,822 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 10:07:05,822 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:05,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 412 proven. 800 refuted. 0 times theorem prover too weak. 4905 trivial. 0 not checked. [2018-12-31 10:07:06,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:06,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 17 [2018-12-31 10:07:06,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-31 10:07:06,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-31 10:07:06,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2018-12-31 10:07:06,412 INFO L87 Difference]: Start difference. First operand 157 states and 219 transitions. Second operand 17 states. [2018-12-31 10:07:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:07,074 INFO L93 Difference]: Finished difference Result 342 states and 509 transitions. [2018-12-31 10:07:07,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-31 10:07:07,075 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 460 [2018-12-31 10:07:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:07,078 INFO L225 Difference]: With dead ends: 342 [2018-12-31 10:07:07,079 INFO L226 Difference]: Without dead ends: 158 [2018-12-31 10:07:07,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2018-12-31 10:07:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-12-31 10:07:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 139. [2018-12-31 10:07:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-12-31 10:07:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2018-12-31 10:07:07,094 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 460 [2018-12-31 10:07:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:07,095 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2018-12-31 10:07:07,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-31 10:07:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2018-12-31 10:07:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-12-31 10:07:07,099 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:07,100 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:07,100 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:07,100 INFO L82 PathProgramCache]: Analyzing trace with hash -103470708, now seen corresponding path program 9 times [2018-12-31 10:07:07,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:07,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:07,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:07,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:07,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:07,808 WARN L181 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-12-31 10:07:08,033 WARN L181 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 6 [2018-12-31 10:07:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 385 proven. 976 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2018-12-31 10:07:08,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:08,188 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:08,199 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 10:07:08,308 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-12-31 10:07:08,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:08,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 356 proven. 396 refuted. 0 times theorem prover too weak. 4264 trivial. 0 not checked. [2018-12-31 10:07:08,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:08,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 22 [2018-12-31 10:07:08,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-31 10:07:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-31 10:07:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2018-12-31 10:07:08,885 INFO L87 Difference]: Start difference. First operand 139 states and 181 transitions. Second operand 22 states. [2018-12-31 10:07:10,738 WARN L181 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-12-31 10:07:12,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:12,483 INFO L93 Difference]: Finished difference Result 348 states and 532 transitions. [2018-12-31 10:07:12,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-12-31 10:07:12,484 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 418 [2018-12-31 10:07:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:12,488 INFO L225 Difference]: With dead ends: 348 [2018-12-31 10:07:12,488 INFO L226 Difference]: Without dead ends: 206 [2018-12-31 10:07:12,492 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=371, Invalid=2179, Unknown=0, NotChecked=0, Total=2550 [2018-12-31 10:07:12,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-12-31 10:07:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 176. [2018-12-31 10:07:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-12-31 10:07:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 227 transitions. [2018-12-31 10:07:12,506 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 227 transitions. Word has length 418 [2018-12-31 10:07:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:12,507 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 227 transitions. [2018-12-31 10:07:12,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-31 10:07:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 227 transitions. [2018-12-31 10:07:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-12-31 10:07:12,512 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:12,513 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:12,513 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:12,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:12,513 INFO L82 PathProgramCache]: Analyzing trace with hash 706303904, now seen corresponding path program 10 times [2018-12-31 10:07:12,514 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:12,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:12,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:12,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:12,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-12-31 10:07:14,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:14,132 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:14,143 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 10:07:14,272 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 10:07:14,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:14,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-12-31 10:07:15,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:15,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2018-12-31 10:07:15,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-31 10:07:15,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-31 10:07:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-12-31 10:07:15,894 INFO L87 Difference]: Start difference. First operand 176 states and 227 transitions. Second operand 52 states. [2018-12-31 10:07:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:17,465 INFO L93 Difference]: Finished difference Result 212 states and 280 transitions. [2018-12-31 10:07:17,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-31 10:07:17,467 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 459 [2018-12-31 10:07:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:17,471 INFO L225 Difference]: With dead ends: 212 [2018-12-31 10:07:17,471 INFO L226 Difference]: Without dead ends: 205 [2018-12-31 10:07:17,473 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 510 SyntacticMatches, 35 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-12-31 10:07:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-12-31 10:07:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2018-12-31 10:07:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-12-31 10:07:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 267 transitions. [2018-12-31 10:07:17,492 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 267 transitions. Word has length 459 [2018-12-31 10:07:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:17,495 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 267 transitions. [2018-12-31 10:07:17,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-31 10:07:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 267 transitions. [2018-12-31 10:07:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-12-31 10:07:17,500 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:17,501 INFO L402 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 32, 30, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 13, 11, 9, 6, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:17,501 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 986531705, now seen corresponding path program 11 times [2018-12-31 10:07:17,501 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:17,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:17,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:17,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:17,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8075 backedges. 965 proven. 213 refuted. 0 times theorem prover too weak. 6897 trivial. 0 not checked. [2018-12-31 10:07:18,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:18,606 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:18,618 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 10:07:18,770 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-12-31 10:07:18,770 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:18,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8075 backedges. 3268 proven. 150 refuted. 0 times theorem prover too weak. 4657 trivial. 0 not checked. [2018-12-31 10:07:19,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:19,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-12-31 10:07:19,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-31 10:07:19,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-31 10:07:19,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2018-12-31 10:07:19,183 INFO L87 Difference]: Start difference. First operand 199 states and 267 transitions. Second operand 18 states. [2018-12-31 10:07:20,353 WARN L181 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-12-31 10:07:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:20,910 INFO L93 Difference]: Finished difference Result 384 states and 523 transitions. [2018-12-31 10:07:20,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-31 10:07:20,911 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 527 [2018-12-31 10:07:20,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:20,916 INFO L225 Difference]: With dead ends: 384 [2018-12-31 10:07:20,916 INFO L226 Difference]: Without dead ends: 194 [2018-12-31 10:07:20,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2018-12-31 10:07:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-12-31 10:07:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2018-12-31 10:07:20,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-12-31 10:07:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 242 transitions. [2018-12-31 10:07:20,938 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 242 transitions. Word has length 527 [2018-12-31 10:07:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:20,938 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 242 transitions. [2018-12-31 10:07:20,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-31 10:07:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 242 transitions. [2018-12-31 10:07:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-12-31 10:07:20,944 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:20,945 INFO L402 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 29, 28, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 12, 10, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:20,945 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1403282041, now seen corresponding path program 12 times [2018-12-31 10:07:20,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:20,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:20,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:20,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:20,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:21,648 WARN L181 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 8 [2018-12-31 10:07:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 1093 proven. 59 refuted. 0 times theorem prover too weak. 5688 trivial. 0 not checked. [2018-12-31 10:07:21,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:21,927 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:21,938 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 10:07:22,011 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-12-31 10:07:22,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:22,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6840 backedges. 1062 proven. 34 refuted. 0 times theorem prover too weak. 5744 trivial. 0 not checked. [2018-12-31 10:07:22,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:22,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 17 [2018-12-31 10:07:22,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-31 10:07:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-31 10:07:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-12-31 10:07:22,476 INFO L87 Difference]: Start difference. First operand 192 states and 242 transitions. Second operand 17 states. [2018-12-31 10:07:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:23,025 INFO L93 Difference]: Finished difference Result 345 states and 436 transitions. [2018-12-31 10:07:23,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-31 10:07:23,026 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 486 [2018-12-31 10:07:23,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:23,030 INFO L225 Difference]: With dead ends: 345 [2018-12-31 10:07:23,031 INFO L226 Difference]: Without dead ends: 167 [2018-12-31 10:07:23,032 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2018-12-31 10:07:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-12-31 10:07:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2018-12-31 10:07:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-12-31 10:07:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 191 transitions. [2018-12-31 10:07:23,048 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 191 transitions. Word has length 486 [2018-12-31 10:07:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:23,050 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 191 transitions. [2018-12-31 10:07:23,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-31 10:07:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 191 transitions. [2018-12-31 10:07:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-12-31 10:07:23,055 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:23,056 INFO L402 BasicCegarLoop]: trace histogram [38, 38, 35, 35, 30, 29, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 10, 8, 6, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:23,056 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash 730094298, now seen corresponding path program 13 times [2018-12-31 10:07:23,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:23,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:23,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:23,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:23,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 1313 proven. 334 refuted. 0 times theorem prover too weak. 5614 trivial. 0 not checked. [2018-12-31 10:07:23,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:23,695 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:23,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:23,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7261 backedges. 948 proven. 208 refuted. 0 times theorem prover too weak. 6105 trivial. 0 not checked. [2018-12-31 10:07:24,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:24,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 22 [2018-12-31 10:07:24,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-31 10:07:24,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-31 10:07:24,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-12-31 10:07:24,396 INFO L87 Difference]: Start difference. First operand 163 states and 191 transitions. Second operand 22 states. [2018-12-31 10:07:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:25,585 INFO L93 Difference]: Finished difference Result 236 states and 280 transitions. [2018-12-31 10:07:25,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-31 10:07:25,587 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 500 [2018-12-31 10:07:25,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:25,589 INFO L225 Difference]: With dead ends: 236 [2018-12-31 10:07:25,589 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 10:07:25,592 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2018-12-31 10:07:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 10:07:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 10:07:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 10:07:25,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 10:07:25,593 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 500 [2018-12-31 10:07:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:25,593 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 10:07:25,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-31 10:07:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 10:07:25,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 10:07:25,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 10:07:26,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,233 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,628 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,667 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,676 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,852 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,877 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,922 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:26,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,083 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,184 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,520 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,624 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,662 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,715 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:27,728 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-31 10:07:28,497 WARN L181 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 9 [2018-12-31 10:07:28,756 WARN L181 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 1 [2018-12-31 10:07:30,239 WARN L181 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 148 DAG size of output: 51 [2018-12-31 10:07:31,056 WARN L181 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 7 [2018-12-31 10:07:32,535 WARN L181 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 161 DAG size of output: 53 [2018-12-31 10:07:32,539 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 10:07:32,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 10:07:32,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 10:07:32,540 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-12-31 10:07:32,540 INFO L444 ceAbstractionStarter]: At program point L41(lines 35 42) the Hoare annotation is: (<= 8 ULTIMATE.start_main_~x~0) [2018-12-31 10:07:32,540 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-12-31 10:07:32,540 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-12-31 10:07:32,541 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 8) (<= 8 ULTIMATE.start_main_~x~0)) [2018-12-31 10:07:32,541 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-12-31 10:07:32,541 INFO L448 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-12-31 10:07:32,541 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-12-31 10:07:32,541 INFO L444 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| fibo2_~n) (< 3 |fibo2_#in~n|)) [2018-12-31 10:07:32,541 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-31 10:07:32,541 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse4 (<= |fibo2_#in~n| 5)) (.cse5 (<= 4 fibo2_~n))) (let ((.cse1 (<= 7 fibo2_~n)) (.cse2 (and (<= fibo2_~n 4) (<= |fibo2_#t~ret2| 2) .cse5 (<= 2 |fibo2_#t~ret2|))) (.cse0 (and (<= |fibo2_#in~n| 6) (<= 6 |fibo2_#in~n|))) (.cse3 (and (<= 5 |fibo2_#in~n|) .cse4))) (and (<= fibo2_~n |fibo2_#in~n|) (or .cse0 .cse1 .cse2 .cse3 (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1))) (or (and .cse4 .cse5) (and (<= 5 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 5)) (<= 7 |fibo2_#in~n|) (and (<= |fibo2_#in~n| 4) (<= 3 |fibo2_#in~n|))) (<= |fibo2_#in~n| fibo2_~n) (or (and (<= |fibo2_#t~ret2| 3) (<= 3 |fibo2_#t~ret2|)) .cse0 (<= |fibo2_#in~n| 3) .cse1 .cse2) (or .cse0 (<= 8 |fibo2_#in~n|) (and (<= |fibo2_#t~ret2| 8) (<= 8 |fibo2_#t~ret2|)) .cse3 (< |fibo2_#in~n| 5))))) [2018-12-31 10:07:32,542 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-12-31 10:07:32,542 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-12-31 10:07:32,542 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-12-31 10:07:32,542 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-12-31 10:07:32,542 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-12-31 10:07:32,542 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-12-31 10:07:32,542 INFO L444 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (< 1 fibo1_~n) (<= |fibo1_#in~n| fibo1_~n)) [2018-12-31 10:07:32,543 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-12-31 10:07:32,543 INFO L444 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse1 (<= |fibo1_#in~n| fibo1_~n))) (let ((.cse0 (<= fibo1_~n |fibo1_#in~n|)) (.cse2 (<= |fibo1_#in~n| 2)) (.cse3 (and (<= 3 |fibo1_#t~ret0|) (<= 5 |fibo1_#in~n|) (<= fibo1_~n 5) (<= |fibo1_#t~ret0| 3) .cse1)) (.cse4 (and (<= 3 |fibo1_#in~n|) (<= |fibo1_#in~n| 3)))) (and (or (< 3 |fibo1_#in~n|) (and .cse0 (<= |fibo1_#t~ret0| 1) (<= 1 |fibo1_#t~ret0|) (< 1 fibo1_~n) .cse1)) (or (<= 9 |fibo1_#in~n|) (and (<= |fibo1_#t~ret0| 13) (<= 13 |fibo1_#t~ret0|)) (<= |fibo1_#in~n| 7)) (or (and .cse0 (<= 6 |fibo1_#in~n|) .cse1) .cse2 .cse3 .cse4 (and .cse0 (<= 4 fibo1_~n) (<= |fibo1_#in~n| 4))) (or (<= |fibo1_#in~n| 5) (<= 7 |fibo1_#in~n|) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|))) (or .cse2 .cse3 (< 5 |fibo1_#in~n|) .cse4 (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2)))))) [2018-12-31 10:07:32,543 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-12-31 10:07:32,543 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-12-31 10:07:32,543 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-12-31 10:07:32,543 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-12-31 10:07:32,543 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-12-31 10:07:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 10:07:32 BoogieIcfgContainer [2018-12-31 10:07:32,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 10:07:32,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 10:07:32,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 10:07:32,560 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 10:07:32,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:06:43" (3/4) ... [2018-12-31 10:07:32,564 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 10:07:32,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-12-31 10:07:32,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-12-31 10:07:32,578 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-31 10:07:32,578 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 10:07:32,633 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 10:07:32,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 10:07:32,635 INFO L168 Benchmark]: Toolchain (without parser) took 49697.70 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 998.8 MB). Free memory was 946.0 MB in the beginning and 1.3 GB in the end (delta: -305.5 MB). Peak memory consumption was 693.3 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:32,636 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:07:32,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.68 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:32,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.18 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:07:32,637 INFO L168 Benchmark]: Boogie Preprocessor took 35.65 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:07:32,638 INFO L168 Benchmark]: RCFGBuilder took 491.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -188.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:32,638 INFO L168 Benchmark]: TraceAbstraction took 48723.79 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 858.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -133.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 11.5 GB. [2018-12-31 10:07:32,642 INFO L168 Benchmark]: Witness Printer took 73.56 ms. Allocated memory is still 2.0 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 11.5 GB. [2018-12-31 10:07:32,647 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 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.68 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.18 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.65 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 491.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -188.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 48723.79 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 858.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -133.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 11.5 GB. * Witness Printer took 73.56 ms. Allocated memory is still 2.0 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 8 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. SAFE Result, 48.6s OverallTime, 21 OverallIterations, 59 TraceHistogramMax, 19.7s AutomataDifference, 0.0s DeadEndRemovalTime, 6.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 671 SDtfs, 1065 SDslu, 6856 SDs, 0 SdLazy, 8158 SolverSat, 1142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6764 GetRequests, 6217 SyntacticMatches, 40 SemanticMatches, 507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=18, 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: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 150 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 1052 PreInvPairs, 2946 NumberOfFragments, 303 HoareAnnotationTreeSize, 1052 FomulaSimplifications, 72284 FormulaSimplificationTreeSizeReduction, 2.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 13222 FormulaSimplificationTreeSizeReductionInter, 4.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 12417 NumberOfCodeBlocks, 10720 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 12377 ConstructedInterpolants, 0 QuantifiedInterpolants, 8420039 SizeOfPredicates, 107 NumberOfNonLiveVariables, 9969 ConjunctsInSsa, 487 ConjunctsInUnsatCore, 40 InterpolantComputations, 2 PerfectInterpolantSequences, 162673/176940 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...