./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f26efe6943beb9bd444f2fe65e72a92241f10e89 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 18:41:20,213 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 18:41:20,214 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 18:41:20,222 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 18:41:20,222 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 18:41:20,223 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 18:41:20,224 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 18:41:20,225 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 18:41:20,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 18:41:20,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 18:41:20,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 18:41:20,228 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 18:41:20,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 18:41:20,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 18:41:20,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 18:41:20,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 18:41:20,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 18:41:20,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 18:41:20,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 18:41:20,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 18:41:20,235 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 18:41:20,236 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 18:41:20,238 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 18:41:20,238 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 18:41:20,238 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 18:41:20,239 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 18:41:20,240 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 18:41:20,240 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 18:41:20,241 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 18:41:20,241 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 18:41:20,242 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 18:41:20,242 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 18:41:20,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 18:41:20,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 18:41:20,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 18:41:20,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 18:41:20,244 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 18:41:20,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 18:41:20,254 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 18:41:20,255 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 18:41:20,255 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 18:41:20,255 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 18:41:20,255 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 18:41:20,255 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 18:41:20,255 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 18:41:20,256 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 18:41:20,256 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 18:41:20,256 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 18:41:20,256 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 18:41:20,256 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 18:41:20,257 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 18:41:20,257 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 18:41:20,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 18:41:20,257 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 18:41:20,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 18:41:20,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 18:41:20,258 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 18:41:20,258 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 18:41:20,258 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 18:41:20,258 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 18:41:20,258 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 18:41:20,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 18:41:20,259 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 18:41:20,259 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 18:41:20,259 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 18:41:20,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 18:41:20,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 18:41:20,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 18:41:20,259 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 18:41:20,260 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 18:41:20,260 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 18:41:20,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 18:41:20,260 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 18:41:20,260 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan 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 -> Taipan 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 -> f26efe6943beb9bd444f2fe65e72a92241f10e89 [2018-12-09 18:41:20,278 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 18:41:20,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 18:41:20,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 18:41:20,287 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 18:41:20,288 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 18:41:20,288 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/../../sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c [2018-12-09 18:41:20,324 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/data/23f504de9/dac459cc3b184ef68ebbc10417b6f0b5/FLAGd23749244 [2018-12-09 18:41:20,741 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 18:41:20,741 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/sv-benchmarks/c/recursive-simple/fibo_2calls_10_true-unreach-call.c [2018-12-09 18:41:20,744 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/data/23f504de9/dac459cc3b184ef68ebbc10417b6f0b5/FLAGd23749244 [2018-12-09 18:41:20,752 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/data/23f504de9/dac459cc3b184ef68ebbc10417b6f0b5 [2018-12-09 18:41:20,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 18:41:20,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 18:41:20,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 18:41:20,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 18:41:20,757 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 18:41:20,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489644d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20, skipping insertion in model container [2018-12-09 18:41:20,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 18:41:20,772 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 18:41:20,855 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:41:20,857 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 18:41:20,866 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:41:20,874 INFO L195 MainTranslator]: Completed translation [2018-12-09 18:41:20,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20 WrapperNode [2018-12-09 18:41:20,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 18:41:20,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 18:41:20,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 18:41:20,875 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 18:41:20,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 18:41:20,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 18:41:20,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 18:41:20,886 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 18:41:20,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... [2018-12-09 18:41:20,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 18:41:20,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 18:41:20,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 18:41:20,897 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 18:41:20,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:41:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 18:41:20,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 18:41:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 18:41:20,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 18:41:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 18:41:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 18:41:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-12-09 18:41:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-12-09 18:41:20,958 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-12-09 18:41:20,958 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-12-09 18:41:21,047 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 18:41:21,047 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 18:41:21,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:41:21 BoogieIcfgContainer [2018-12-09 18:41:21,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 18:41:21,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 18:41:21,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 18:41:21,050 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 18:41:21,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:41:20" (1/3) ... [2018-12-09 18:41:21,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9f4617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:41:21, skipping insertion in model container [2018-12-09 18:41:21,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:41:20" (2/3) ... [2018-12-09 18:41:21,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9f4617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:41:21, skipping insertion in model container [2018-12-09 18:41:21,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:41:21" (3/3) ... [2018-12-09 18:41:21,053 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10_true-unreach-call.c [2018-12-09 18:41:21,059 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 18:41:21,063 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 18:41:21,075 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 18:41:21,101 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 18:41:21,102 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 18:41:21,102 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 18:41:21,102 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 18:41:21,102 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 18:41:21,102 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 18:41:21,102 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 18:41:21,102 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 18:41:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 18:41:21,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 18:41:21,120 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:21,120 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:21,121 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:21,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:21,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-12-09 18:41:21,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:21,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:21,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,157 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:41:21,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:41:21,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 18:41:21,226 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:41:21,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 18:41:21,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 18:41:21,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 18:41:21,237 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-12-09 18:41:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:21,294 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-12-09 18:41:21,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 18:41:21,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 18:41:21,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:21,300 INFO L225 Difference]: With dead ends: 44 [2018-12-09 18:41:21,301 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 18:41:21,302 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 18:41:21,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 18:41:21,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 18:41:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 18:41:21,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-12-09 18:41:21,327 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-12-09 18:41:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:21,328 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-12-09 18:41:21,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 18:41:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-12-09 18:41:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 18:41:21,329 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:21,329 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:21,329 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:21,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:21,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-12-09 18:41:21,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:21,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:21,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,330 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:41:21,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:41:21,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 18:41:21,351 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:41:21,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 18:41:21,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 18:41:21,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 18:41:21,352 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-12-09 18:41:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:21,392 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-12-09 18:41:21,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 18:41:21,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 18:41:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:21,394 INFO L225 Difference]: With dead ends: 36 [2018-12-09 18:41:21,394 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 18:41:21,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 18:41:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 18:41:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-09 18:41:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 18:41:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-12-09 18:41:21,401 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-12-09 18:41:21,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:21,401 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-12-09 18:41:21,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 18:41:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-12-09 18:41:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 18:41:21,402 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:21,402 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:21,403 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:21,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:21,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-12-09 18:41:21,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:21,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:21,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,404 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 18:41:21,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:21,466 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:41:21,467 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-12-09 18:41:21,468 INFO L205 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [31], [32], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [56], [57], [58], [59] [2018-12-09 18:41:21,486 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 18:41:21,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 18:41:21,547 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 18:41:21,548 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 3. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 5 variables. [2018-12-09 18:41:21,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:21,552 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 18:41:21,579 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 50% of their original sizes. [2018-12-09 18:41:21,579 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 18:41:21,601 INFO L418 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2018-12-09 18:41:21,602 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 18:41:21,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 18:41:21,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-12-09 18:41:21,602 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:41:21,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 18:41:21,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 18:41:21,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 18:41:21,603 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2018-12-09 18:41:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:21,718 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2018-12-09 18:41:21,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 18:41:21,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-12-09 18:41:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:21,719 INFO L225 Difference]: With dead ends: 72 [2018-12-09 18:41:21,719 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 18:41:21,720 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-09 18:41:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 18:41:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2018-12-09 18:41:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-09 18:41:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2018-12-09 18:41:21,726 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 26 [2018-12-09 18:41:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:21,726 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2018-12-09 18:41:21,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 18:41:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2018-12-09 18:41:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 18:41:21,727 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:21,727 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, 1, 1, 1] [2018-12-09 18:41:21,728 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:21,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:21,728 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-12-09 18:41:21,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:21,729 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 18:41:21,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:21,769 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:41:21,769 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-12-09 18:41:21,770 INFO L205 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [26], [28], [30], [31], [32], [35], [36], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-12-09 18:41:21,771 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 18:41:21,771 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 18:41:21,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 18:41:21,969 INFO L272 AbstractInterpreter]: Visited 28 different actions 896 times. Never merged. Widened at 4 different actions 65 times. Performed 1872 root evaluator evaluations with a maximum evaluation depth of 4. Performed 1872 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 95 fixpoints after 6 different actions. Largest state had 5 variables. [2018-12-09 18:41:21,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:21,974 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 18:41:21,984 INFO L227 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 50% of their original sizes. [2018-12-09 18:41:21,984 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 18:41:22,021 INFO L418 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2018-12-09 18:41:22,021 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 18:41:22,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 18:41:22,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-12-09 18:41:22,021 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:41:22,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 18:41:22,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 18:41:22,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 18:41:22,022 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2018-12-09 18:41:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:22,186 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2018-12-09 18:41:22,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 18:41:22,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-12-09 18:41:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:22,187 INFO L225 Difference]: With dead ends: 87 [2018-12-09 18:41:22,188 INFO L226 Difference]: Without dead ends: 55 [2018-12-09 18:41:22,188 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-12-09 18:41:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-12-09 18:41:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-12-09 18:41:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-12-09 18:41:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2018-12-09 18:41:22,193 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2018-12-09 18:41:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:22,193 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2018-12-09 18:41:22,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 18:41:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2018-12-09 18:41:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-09 18:41:22,194 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:22,195 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:22,195 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:22,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:22,195 INFO L82 PathProgramCache]: Analyzing trace with hash -209212298, now seen corresponding path program 2 times [2018-12-09 18:41:22,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:22,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:22,196 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-12-09 18:41:22,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:22,234 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:41:22,234 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:41:22,235 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:41:22,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:22,235 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:41:22,241 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:41:22,241 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:41:22,257 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 18:41:22,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:41:22,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:41:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-12-09 18:41:22,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:41:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-12-09 18:41:22,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:41:22,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2018-12-09 18:41:22,560 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:41:22,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 18:41:22,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 18:41:22,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-12-09 18:41:22,560 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 11 states. [2018-12-09 18:41:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:22,699 INFO L93 Difference]: Finished difference Result 121 states and 177 transitions. [2018-12-09 18:41:22,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 18:41:22,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2018-12-09 18:41:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:22,701 INFO L225 Difference]: With dead ends: 121 [2018-12-09 18:41:22,701 INFO L226 Difference]: Without dead ends: 76 [2018-12-09 18:41:22,701 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-12-09 18:41:22,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-12-09 18:41:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2018-12-09 18:41:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-09 18:41:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-12-09 18:41:22,708 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 52 [2018-12-09 18:41:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:22,708 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-12-09 18:41:22,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 18:41:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-12-09 18:41:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-12-09 18:41:22,709 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:22,709 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:22,710 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:22,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2018-12-09 18:41:22,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:22,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:22,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:41:22,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:22,711 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-12-09 18:41:22,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:22,746 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:41:22,746 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-12-09 18:41:22,746 INFO L205 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [25], [26], [28], [30], [31], [32], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-12-09 18:41:22,747 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 18:41:22,747 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 18:41:28,211 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 18:41:28,212 INFO L272 AbstractInterpreter]: Visited 29 different actions 61447 times. Merged at 11 different actions 16389 times. Widened at 4 different actions 3048 times. Performed 145554 root evaluator evaluations with a maximum evaluation depth of 4. Performed 145554 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 7200 fixpoints after 10 different actions. Largest state had 5 variables. [2018-12-09 18:41:28,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:28,214 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 18:41:28,223 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 56.25% of their original sizes. [2018-12-09 18:41:28,224 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 18:41:28,283 INFO L418 sIntCurrentIteration]: We unified 54 AI predicates to 54 [2018-12-09 18:41:28,283 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 18:41:28,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 18:41:28,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-12-09 18:41:28,283 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:41:28,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 18:41:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 18:41:28,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-09 18:41:28,284 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 13 states. [2018-12-09 18:41:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:28,546 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2018-12-09 18:41:28,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 18:41:28,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2018-12-09 18:41:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:28,548 INFO L225 Difference]: With dead ends: 118 [2018-12-09 18:41:28,548 INFO L226 Difference]: Without dead ends: 77 [2018-12-09 18:41:28,549 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-12-09 18:41:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-09 18:41:28,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-12-09 18:41:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-12-09 18:41:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2018-12-09 18:41:28,557 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 55 [2018-12-09 18:41:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:28,557 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2018-12-09 18:41:28,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 18:41:28,558 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2018-12-09 18:41:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-12-09 18:41:28,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:28,560 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:28,560 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:28,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1937391112, now seen corresponding path program 1 times [2018-12-09 18:41:28,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:28,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:28,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:28,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:28,561 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-12-09 18:41:28,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:28,605 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:41:28,605 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 81 with the following transitions: [2018-12-09 18:41:28,605 INFO L205 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [22], [25], [26], [28], [30], [31], [32], [35], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-12-09 18:41:28,606 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 18:41:28,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 18:41:30,055 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 18:41:30,055 INFO L272 AbstractInterpreter]: Visited 29 different actions 20375 times. Merged at 11 different actions 5233 times. Widened at 3 different actions 1140 times. Performed 47351 root evaluator evaluations with a maximum evaluation depth of 4. Performed 47351 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 2539 fixpoints after 9 different actions. Largest state had 5 variables. [2018-12-09 18:41:30,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:30,057 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 18:41:30,067 INFO L227 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 50% of their original sizes. [2018-12-09 18:41:30,067 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 18:41:30,193 INFO L418 sIntCurrentIteration]: We unified 79 AI predicates to 79 [2018-12-09 18:41:30,193 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 18:41:30,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 18:41:30,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-12-09 18:41:30,193 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:41:30,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 18:41:30,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 18:41:30,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-09 18:41:30,194 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand 13 states. [2018-12-09 18:41:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:41:30,410 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2018-12-09 18:41:30,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 18:41:30,410 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2018-12-09 18:41:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:41:30,411 INFO L225 Difference]: With dead ends: 141 [2018-12-09 18:41:30,411 INFO L226 Difference]: Without dead ends: 86 [2018-12-09 18:41:30,412 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-12-09 18:41:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-09 18:41:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-12-09 18:41:30,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-12-09 18:41:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2018-12-09 18:41:30,417 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 80 [2018-12-09 18:41:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:41:30,417 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2018-12-09 18:41:30,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 18:41:30,417 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2018-12-09 18:41:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-09 18:41:30,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:41:30,418 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:41:30,418 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:41:30,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:41:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1541382103, now seen corresponding path program 1 times [2018-12-09 18:41:30,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:41:30,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:30,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:41:30,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:41:30,419 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:41:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:41:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 55 proven. 13 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-12-09 18:41:30,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:41:30,455 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:41:30,455 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 95 with the following transitions: [2018-12-09 18:41:30,455 INFO L205 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [25], [26], [28], [30], [31], [32], [35], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-12-09 18:41:30,456 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 18:41:30,456 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 18:44:36,703 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 18:44:36,703 INFO L272 AbstractInterpreter]: Visited 34 different actions 2187354 times. Merged at 16 different actions 690606 times. Widened at 4 different actions 72333 times. Performed 5379148 root evaluator evaluations with a maximum evaluation depth of 4. Performed 5379148 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 310049 fixpoints after 10 different actions. Largest state had 5 variables. [2018-12-09 18:44:36,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:36,705 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 18:44:36,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:36,705 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:36,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:44:36,711 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 18:44:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:36,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 23 proven. 81 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-12-09 18:44:36,801 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 23 proven. 97 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-12-09 18:44:37,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:37,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 15] total 21 [2018-12-09 18:44:37,448 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:37,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 18:44:37,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 18:44:37,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-12-09 18:44:37,449 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand 14 states. [2018-12-09 18:44:37,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:37,652 INFO L93 Difference]: Finished difference Result 231 states and 393 transitions. [2018-12-09 18:44:37,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 18:44:37,653 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2018-12-09 18:44:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:37,654 INFO L225 Difference]: With dead ends: 231 [2018-12-09 18:44:37,654 INFO L226 Difference]: Without dead ends: 143 [2018-12-09 18:44:37,655 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 162 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2018-12-09 18:44:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-12-09 18:44:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 98. [2018-12-09 18:44:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-12-09 18:44:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2018-12-09 18:44:37,665 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 94 [2018-12-09 18:44:37,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:37,665 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2018-12-09 18:44:37,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 18:44:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2018-12-09 18:44:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-12-09 18:44:37,667 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:37,667 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 11, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:37,667 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:37,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:37,667 INFO L82 PathProgramCache]: Analyzing trace with hash -334045017, now seen corresponding path program 1 times [2018-12-09 18:44:37,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:37,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:37,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:44:37,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:37,668 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 99 proven. 184 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2018-12-09 18:44:37,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:37,760 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:37,760 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-12-09 18:44:37,760 INFO L205 CegarAbsIntRunner]: [0], [4], [6], [9], [11], [18], [21], [22], [26], [28], [30], [31], [32], [35], [36], [39], [40], [42], [44], [45], [46], [47], [48], [50], [51], [52], [53], [54], [55], [56], [57], [58], [59] [2018-12-09 18:44:37,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 18:44:37,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 18:44:39,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 18:44:39,517 INFO L272 AbstractInterpreter]: Visited 29 different actions 27751 times. Merged at 11 different actions 6717 times. Widened at 4 different actions 1741 times. Performed 67659 root evaluator evaluations with a maximum evaluation depth of 4. Performed 67659 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 3522 fixpoints after 9 different actions. Largest state had 5 variables. [2018-12-09 18:44:39,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:39,519 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 18:44:39,534 INFO L227 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 57.21% of their original sizes. [2018-12-09 18:44:39,534 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 18:44:39,660 INFO L418 sIntCurrentIteration]: We unified 174 AI predicates to 174 [2018-12-09 18:44:39,660 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 18:44:39,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 18:44:39,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [11] total 32 [2018-12-09 18:44:39,660 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:44:39,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-09 18:44:39,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-09 18:44:39,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2018-12-09 18:44:39,661 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 23 states. [2018-12-09 18:44:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:40,706 INFO L93 Difference]: Finished difference Result 223 states and 325 transitions. [2018-12-09 18:44:40,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-09 18:44:40,706 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 175 [2018-12-09 18:44:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:40,707 INFO L225 Difference]: With dead ends: 223 [2018-12-09 18:44:40,707 INFO L226 Difference]: Without dead ends: 153 [2018-12-09 18:44:40,707 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 18:44:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-12-09 18:44:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 127. [2018-12-09 18:44:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-12-09 18:44:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2018-12-09 18:44:40,721 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 175 [2018-12-09 18:44:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:40,721 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2018-12-09 18:44:40,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-09 18:44:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2018-12-09 18:44:40,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-12-09 18:44:40,723 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:40,724 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 13, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:40,724 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:40,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:40,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1327733822, now seen corresponding path program 2 times [2018-12-09 18:44:40,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:40,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:44:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:40,725 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 286 proven. 12 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-12-09 18:44:40,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:40,820 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:40,820 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:40,820 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:40,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:40,820 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:40,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:44:40,826 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:44:40,844 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 18:44:40,844 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:44:40,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 301 proven. 3 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2018-12-09 18:44:40,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 223 proven. 5 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2018-12-09 18:44:41,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:41,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2018-12-09 18:44:41,200 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:41,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 18:44:41,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 18:44:41,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-12-09 18:44:41,201 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand 16 states. [2018-12-09 18:44:41,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:41,361 INFO L93 Difference]: Finished difference Result 255 states and 402 transitions. [2018-12-09 18:44:41,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 18:44:41,361 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 215 [2018-12-09 18:44:41,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:41,363 INFO L225 Difference]: With dead ends: 255 [2018-12-09 18:44:41,363 INFO L226 Difference]: Without dead ends: 152 [2018-12-09 18:44:41,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 418 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-12-09 18:44:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-12-09 18:44:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2018-12-09 18:44:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-12-09 18:44:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2018-12-09 18:44:41,371 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 215 [2018-12-09 18:44:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:41,372 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2018-12-09 18:44:41,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 18:44:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2018-12-09 18:44:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-12-09 18:44:41,374 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:41,374 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 18, 18, 18, 16, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:41,374 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:41,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1249336471, now seen corresponding path program 2 times [2018-12-09 18:44:41,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:41,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:41,375 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:44:41,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:41,375 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2261 backedges. 266 proven. 272 refuted. 0 times theorem prover too weak. 1723 trivial. 0 not checked. [2018-12-09 18:44:41,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:41,466 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:41,466 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:41,466 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:41,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:41,466 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:41,472 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:44:41,472 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:44:41,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-12-09 18:44:41,492 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:44:41,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2261 backedges. 526 proven. 36 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2018-12-09 18:44:41,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2261 backedges. 526 proven. 38 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2018-12-09 18:44:42,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:42,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 23 [2018-12-09 18:44:42,194 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:42,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 18:44:42,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 18:44:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2018-12-09 18:44:42,195 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand 18 states. [2018-12-09 18:44:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:42,603 INFO L93 Difference]: Finished difference Result 332 states and 608 transitions. [2018-12-09 18:44:42,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-09 18:44:42,603 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 287 [2018-12-09 18:44:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:42,606 INFO L225 Difference]: With dead ends: 332 [2018-12-09 18:44:42,606 INFO L226 Difference]: Without dead ends: 215 [2018-12-09 18:44:42,608 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 553 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=1215, Unknown=0, NotChecked=0, Total=1482 [2018-12-09 18:44:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-12-09 18:44:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 197. [2018-12-09 18:44:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-12-09 18:44:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 307 transitions. [2018-12-09 18:44:42,628 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 307 transitions. Word has length 287 [2018-12-09 18:44:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:42,628 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 307 transitions. [2018-12-09 18:44:42,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 18:44:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 307 transitions. [2018-12-09 18:44:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-12-09 18:44:42,630 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:42,630 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 17, 14, 14, 14, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:42,631 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:42,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:42,631 INFO L82 PathProgramCache]: Analyzing trace with hash 404268200, now seen corresponding path program 3 times [2018-12-09 18:44:42,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:42,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:42,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:44:42,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:42,632 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 104 proven. 452 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2018-12-09 18:44:42,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:42,736 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:42,736 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:42,736 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:42,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:42,736 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:42,745 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 18:44:42,745 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 18:44:42,782 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 18:44:42,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:44:42,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 100 proven. 456 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2018-12-09 18:44:42,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 100 proven. 480 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2018-12-09 18:44:43,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:43,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2018-12-09 18:44:43,760 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:43,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 18:44:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 18:44:43,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2018-12-09 18:44:43,760 INFO L87 Difference]: Start difference. First operand 197 states and 307 transitions. Second operand 18 states. [2018-12-09 18:44:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:44,048 INFO L93 Difference]: Finished difference Result 468 states and 1088 transitions. [2018-12-09 18:44:44,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-09 18:44:44,048 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 248 [2018-12-09 18:44:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:44,052 INFO L225 Difference]: With dead ends: 468 [2018-12-09 18:44:44,052 INFO L226 Difference]: Without dead ends: 365 [2018-12-09 18:44:44,053 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 475 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2018-12-09 18:44:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-12-09 18:44:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 206. [2018-12-09 18:44:44,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-12-09 18:44:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 349 transitions. [2018-12-09 18:44:44,071 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 349 transitions. Word has length 248 [2018-12-09 18:44:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:44,072 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 349 transitions. [2018-12-09 18:44:44,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 18:44:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 349 transitions. [2018-12-09 18:44:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1470 [2018-12-09 18:44:44,079 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:44,080 INFO L402 BasicCegarLoop]: trace histogram [122, 122, 93, 93, 86, 86, 61, 61, 61, 61, 61, 61, 61, 46, 46, 46, 46, 46, 46, 46, 40, 36, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:44,080 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:44,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:44,080 INFO L82 PathProgramCache]: Analyzing trace with hash 673872272, now seen corresponding path program 2 times [2018-12-09 18:44:44,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:44,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:44,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:44:44,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:44,081 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 65406 backedges. 1813 proven. 681 refuted. 0 times theorem prover too weak. 62912 trivial. 0 not checked. [2018-12-09 18:44:45,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:45,390 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:45,390 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:45,390 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:45,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:45,390 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:45,397 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:44:45,397 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:44:45,460 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-09 18:44:45,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:44:45,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 65406 backedges. 9342 proven. 21 refuted. 0 times theorem prover too weak. 56043 trivial. 0 not checked. [2018-12-09 18:44:46,328 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 65406 backedges. 3782 proven. 149 refuted. 0 times theorem prover too weak. 61475 trivial. 0 not checked. [2018-12-09 18:44:49,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:49,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 16 [2018-12-09 18:44:49,151 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:49,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 18:44:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 18:44:49,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-12-09 18:44:49,153 INFO L87 Difference]: Start difference. First operand 206 states and 349 transitions. Second operand 12 states. [2018-12-09 18:44:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:49,330 INFO L93 Difference]: Finished difference Result 389 states and 752 transitions. [2018-12-09 18:44:49,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 18:44:49,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1469 [2018-12-09 18:44:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:49,332 INFO L225 Difference]: With dead ends: 389 [2018-12-09 18:44:49,332 INFO L226 Difference]: Without dead ends: 208 [2018-12-09 18:44:49,334 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2953 GetRequests, 2921 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2018-12-09 18:44:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-12-09 18:44:49,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2018-12-09 18:44:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-12-09 18:44:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 321 transitions. [2018-12-09 18:44:49,350 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 321 transitions. Word has length 1469 [2018-12-09 18:44:49,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:49,350 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 321 transitions. [2018-12-09 18:44:49,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 18:44:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 321 transitions. [2018-12-09 18:44:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2018-12-09 18:44:49,359 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:49,359 INFO L402 BasicCegarLoop]: trace histogram [83, 83, 80, 80, 69, 62, 41, 41, 41, 41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 29, 21, 18, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:49,359 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:49,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash 56638592, now seen corresponding path program 3 times [2018-12-09 18:44:49,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:49,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:49,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:44:49,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:49,361 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 36889 backedges. 675 proven. 2829 refuted. 0 times theorem prover too weak. 33385 trivial. 0 not checked. [2018-12-09 18:44:49,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:49,820 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:49,820 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:49,820 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:49,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:49,820 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:49,826 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 18:44:49,826 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 18:44:49,944 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 18:44:49,944 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:44:49,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 36889 backedges. 601 proven. 3269 refuted. 0 times theorem prover too weak. 33019 trivial. 0 not checked. [2018-12-09 18:44:50,338 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36889 backedges. 601 proven. 3313 refuted. 0 times theorem prover too weak. 32975 trivial. 0 not checked. [2018-12-09 18:44:53,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:53,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 21] total 28 [2018-12-09 18:44:53,089 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:53,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 18:44:53,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 18:44:53,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2018-12-09 18:44:53,091 INFO L87 Difference]: Start difference. First operand 205 states and 321 transitions. Second operand 19 states. [2018-12-09 18:44:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:53,568 INFO L93 Difference]: Finished difference Result 584 states and 1193 transitions. [2018-12-09 18:44:53,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-09 18:44:53,569 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1116 [2018-12-09 18:44:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:53,572 INFO L225 Difference]: With dead ends: 584 [2018-12-09 18:44:53,572 INFO L226 Difference]: Without dead ends: 367 [2018-12-09 18:44:53,574 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2263 GetRequests, 2197 SyntacticMatches, 19 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2018-12-09 18:44:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-12-09 18:44:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 348. [2018-12-09 18:44:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-12-09 18:44:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 608 transitions. [2018-12-09 18:44:53,604 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 608 transitions. Word has length 1116 [2018-12-09 18:44:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:53,605 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 608 transitions. [2018-12-09 18:44:53,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 18:44:53,605 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 608 transitions. [2018-12-09 18:44:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2018-12-09 18:44:53,614 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:53,615 INFO L402 BasicCegarLoop]: trace histogram [100, 100, 97, 97, 78, 78, 50, 50, 50, 50, 50, 50, 50, 48, 48, 48, 48, 48, 48, 48, 30, 28, 22, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:53,615 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:53,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1044191845, now seen corresponding path program 4 times [2018-12-09 18:44:53,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:53,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:53,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:44:53,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:53,616 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 53842 backedges. 2961 proven. 1928 refuted. 0 times theorem prover too weak. 48953 trivial. 0 not checked. [2018-12-09 18:44:54,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:54,221 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:54,221 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:54,221 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:54,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:54,221 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:54,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:44:54,227 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 18:44:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:54,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 53842 backedges. 596 proven. 3591 refuted. 0 times theorem prover too weak. 49655 trivial. 0 not checked. [2018-12-09 18:44:54,929 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:44:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 53842 backedges. 596 proven. 3624 refuted. 0 times theorem prover too weak. 49622 trivial. 0 not checked. [2018-12-09 18:44:57,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:44:57,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 19] total 36 [2018-12-09 18:44:57,748 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:44:57,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 18:44:57,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 18:44:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 18:44:57,749 INFO L87 Difference]: Start difference. First operand 348 states and 608 transitions. Second operand 28 states. [2018-12-09 18:44:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:44:58,606 INFO L93 Difference]: Finished difference Result 730 states and 1439 transitions. [2018-12-09 18:44:58,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-12-09 18:44:58,606 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 1345 [2018-12-09 18:44:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:44:58,609 INFO L225 Difference]: With dead ends: 730 [2018-12-09 18:44:58,609 INFO L226 Difference]: Without dead ends: 406 [2018-12-09 18:44:58,611 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2746 GetRequests, 2661 SyntacticMatches, 17 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=644, Invalid=4186, Unknown=0, NotChecked=0, Total=4830 [2018-12-09 18:44:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-12-09 18:44:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 358. [2018-12-09 18:44:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-12-09 18:44:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 550 transitions. [2018-12-09 18:44:58,627 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 550 transitions. Word has length 1345 [2018-12-09 18:44:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:44:58,627 INFO L480 AbstractCegarLoop]: Abstraction has 358 states and 550 transitions. [2018-12-09 18:44:58,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-09 18:44:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 550 transitions. [2018-12-09 18:44:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1364 [2018-12-09 18:44:58,635 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:44:58,635 INFO L402 BasicCegarLoop]: trace histogram [102, 102, 97, 97, 82, 80, 51, 51, 51, 51, 51, 51, 51, 48, 48, 48, 48, 48, 48, 48, 34, 29, 20, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:44:58,635 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:44:58,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:44:58,635 INFO L82 PathProgramCache]: Analyzing trace with hash -57357758, now seen corresponding path program 5 times [2018-12-09 18:44:58,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:44:58,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:58,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:44:58,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:44:58,636 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:44:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:44:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 55321 backedges. 1024 proven. 3139 refuted. 0 times theorem prover too weak. 51158 trivial. 0 not checked. [2018-12-09 18:44:59,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:59,223 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:44:59,223 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:44:59,223 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:44:59,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:44:59,224 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:44:59,229 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:44:59,229 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:44:59,287 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-12-09 18:44:59,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:44:59,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:44:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55321 backedges. 3692 proven. 86 refuted. 0 times theorem prover too weak. 51543 trivial. 0 not checked. [2018-12-09 18:44:59,761 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 55321 backedges. 3692 proven. 91 refuted. 0 times theorem prover too weak. 51538 trivial. 0 not checked. [2018-12-09 18:45:02,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:02,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 25 [2018-12-09 18:45:02,004 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:02,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 18:45:02,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 18:45:02,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2018-12-09 18:45:02,005 INFO L87 Difference]: Start difference. First operand 358 states and 550 transitions. Second operand 19 states. [2018-12-09 18:45:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:02,425 INFO L93 Difference]: Finished difference Result 745 states and 1336 transitions. [2018-12-09 18:45:02,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-09 18:45:02,425 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1363 [2018-12-09 18:45:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:02,428 INFO L225 Difference]: With dead ends: 745 [2018-12-09 18:45:02,428 INFO L226 Difference]: Without dead ends: 417 [2018-12-09 18:45:02,430 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2756 GetRequests, 2704 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=1359, Unknown=0, NotChecked=0, Total=1640 [2018-12-09 18:45:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-12-09 18:45:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 379. [2018-12-09 18:45:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-12-09 18:45:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 590 transitions. [2018-12-09 18:45:02,451 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 590 transitions. Word has length 1363 [2018-12-09 18:45:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:02,452 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 590 transitions. [2018-12-09 18:45:02,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 18:45:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 590 transitions. [2018-12-09 18:45:02,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2018-12-09 18:45:02,463 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:02,463 INFO L402 BasicCegarLoop]: trace histogram [133, 133, 116, 116, 108, 91, 66, 66, 66, 66, 66, 66, 66, 58, 58, 58, 58, 58, 58, 58, 50, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:02,463 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:02,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:02,464 INFO L82 PathProgramCache]: Analyzing trace with hash -832210771, now seen corresponding path program 6 times [2018-12-09 18:45:02,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:02,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:02,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:02,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:02,465 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 86857 backedges. 1109 proven. 5374 refuted. 0 times theorem prover too weak. 80374 trivial. 0 not checked. [2018-12-09 18:45:03,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:03,358 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:03,358 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:03,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:03,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:03,358 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:03,364 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 18:45:03,364 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 18:45:03,536 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 18:45:03,536 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:03,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 86857 backedges. 1102 proven. 5165 refuted. 0 times theorem prover too weak. 80590 trivial. 0 not checked. [2018-12-09 18:45:04,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 86857 backedges. 1102 proven. 5205 refuted. 0 times theorem prover too weak. 80550 trivial. 0 not checked. [2018-12-09 18:45:08,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:08,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 22] total 34 [2018-12-09 18:45:08,491 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:08,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 18:45:08,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 18:45:08,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 18:45:08,492 INFO L87 Difference]: Start difference. First operand 379 states and 590 transitions. Second operand 24 states. [2018-12-09 18:45:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:09,170 INFO L93 Difference]: Finished difference Result 1049 states and 2075 transitions. [2018-12-09 18:45:09,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-09 18:45:09,170 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 1700 [2018-12-09 18:45:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:09,173 INFO L225 Difference]: With dead ends: 1049 [2018-12-09 18:45:09,173 INFO L226 Difference]: Without dead ends: 392 [2018-12-09 18:45:09,175 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3437 GetRequests, 3364 SyntacticMatches, 20 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=493, Invalid=2477, Unknown=0, NotChecked=0, Total=2970 [2018-12-09 18:45:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2018-12-09 18:45:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 329. [2018-12-09 18:45:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-12-09 18:45:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 449 transitions. [2018-12-09 18:45:09,192 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 449 transitions. Word has length 1700 [2018-12-09 18:45:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:09,193 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 449 transitions. [2018-12-09 18:45:09,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 18:45:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 449 transitions. [2018-12-09 18:45:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1568 [2018-12-09 18:45:09,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:09,202 INFO L402 BasicCegarLoop]: trace histogram [118, 118, 111, 111, 94, 92, 59, 59, 59, 59, 59, 59, 59, 55, 55, 55, 55, 55, 55, 55, 39, 33, 24, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:09,202 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:09,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1521313307, now seen corresponding path program 7 times [2018-12-09 18:45:09,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:09,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:09,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:09,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:09,203 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 73373 backedges. 1273 proven. 5138 refuted. 0 times theorem prover too weak. 66962 trivial. 0 not checked. [2018-12-09 18:45:09,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:09,942 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:09,942 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:09,942 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:09,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:09,942 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:09,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:45:09,948 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 18:45:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:10,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 73373 backedges. 1025 proven. 4712 refuted. 0 times theorem prover too weak. 67636 trivial. 0 not checked. [2018-12-09 18:45:10,825 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 73373 backedges. 1025 proven. 4752 refuted. 0 times theorem prover too weak. 67596 trivial. 0 not checked. [2018-12-09 18:45:14,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:14,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 22] total 38 [2018-12-09 18:45:14,547 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:14,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 18:45:14,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 18:45:14,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1225, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 18:45:14,549 INFO L87 Difference]: Start difference. First operand 329 states and 449 transitions. Second operand 28 states. [2018-12-09 18:45:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:15,274 INFO L93 Difference]: Finished difference Result 779 states and 1175 transitions. [2018-12-09 18:45:15,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-09 18:45:15,274 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 1567 [2018-12-09 18:45:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:15,277 INFO L225 Difference]: With dead ends: 779 [2018-12-09 18:45:15,277 INFO L226 Difference]: Without dead ends: 378 [2018-12-09 18:45:15,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3177 GetRequests, 3097 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=608, Invalid=3298, Unknown=0, NotChecked=0, Total=3906 [2018-12-09 18:45:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-12-09 18:45:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 346. [2018-12-09 18:45:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2018-12-09 18:45:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 462 transitions. [2018-12-09 18:45:15,306 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 462 transitions. Word has length 1567 [2018-12-09 18:45:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:15,307 INFO L480 AbstractCegarLoop]: Abstraction has 346 states and 462 transitions. [2018-12-09 18:45:15,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-09 18:45:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 462 transitions. [2018-12-09 18:45:15,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2018-12-09 18:45:15,313 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:15,313 INFO L402 BasicCegarLoop]: trace histogram [65, 65, 60, 60, 51, 50, 32, 32, 32, 32, 32, 32, 32, 30, 30, 30, 30, 30, 30, 30, 21, 18, 14, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:15,313 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:15,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:15,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1299068163, now seen corresponding path program 8 times [2018-12-09 18:45:15,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:15,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:45:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:15,315 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21624 backedges. 1577 proven. 705 refuted. 0 times theorem prover too weak. 19342 trivial. 0 not checked. [2018-12-09 18:45:15,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:15,588 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:15,588 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:15,588 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:15,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:15,588 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:15,596 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:45:15,597 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:45:15,695 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-12-09 18:45:15,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:15,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21624 backedges. 6445 proven. 157 refuted. 0 times theorem prover too weak. 15022 trivial. 0 not checked. [2018-12-09 18:45:15,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21624 backedges. 1957 proven. 422 refuted. 0 times theorem prover too weak. 19245 trivial. 0 not checked. [2018-12-09 18:45:17,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:17,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 15] total 26 [2018-12-09 18:45:17,337 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:17,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 18:45:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 18:45:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2018-12-09 18:45:17,338 INFO L87 Difference]: Start difference. First operand 346 states and 462 transitions. Second operand 20 states. [2018-12-09 18:45:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:17,800 INFO L93 Difference]: Finished difference Result 572 states and 773 transitions. [2018-12-09 18:45:17,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 18:45:17,801 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 858 [2018-12-09 18:45:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:17,803 INFO L225 Difference]: With dead ends: 572 [2018-12-09 18:45:17,803 INFO L226 Difference]: Without dead ends: 376 [2018-12-09 18:45:17,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1756 GetRequests, 1695 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=401, Invalid=2049, Unknown=0, NotChecked=0, Total=2450 [2018-12-09 18:45:17,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-12-09 18:45:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 352. [2018-12-09 18:45:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-12-09 18:45:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 459 transitions. [2018-12-09 18:45:17,827 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 459 transitions. Word has length 858 [2018-12-09 18:45:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:17,827 INFO L480 AbstractCegarLoop]: Abstraction has 352 states and 459 transitions. [2018-12-09 18:45:17,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 18:45:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 459 transitions. [2018-12-09 18:45:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2018-12-09 18:45:17,836 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:17,836 INFO L402 BasicCegarLoop]: trace histogram [80, 80, 77, 77, 64, 63, 40, 40, 40, 40, 40, 40, 40, 38, 38, 38, 38, 38, 38, 38, 26, 23, 16, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:17,836 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:17,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash 836952185, now seen corresponding path program 9 times [2018-12-09 18:45:17,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:17,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:17,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:17,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:17,838 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 34245 backedges. 733 proven. 3573 refuted. 0 times theorem prover too weak. 29939 trivial. 0 not checked. [2018-12-09 18:45:18,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:18,307 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:18,307 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:18,307 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:18,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:18,307 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:18,313 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 18:45:18,313 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 18:45:18,412 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 18:45:18,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:18,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 34245 backedges. 703 proven. 2608 refuted. 0 times theorem prover too weak. 30934 trivial. 0 not checked. [2018-12-09 18:45:18,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 34245 backedges. 705 proven. 2639 refuted. 0 times theorem prover too weak. 30901 trivial. 0 not checked. [2018-12-09 18:45:21,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:21,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 19] total 33 [2018-12-09 18:45:21,063 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:21,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-09 18:45:21,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-09 18:45:21,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2018-12-09 18:45:21,064 INFO L87 Difference]: Start difference. First operand 352 states and 459 transitions. Second operand 25 states. [2018-12-09 18:45:21,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:21,903 INFO L93 Difference]: Finished difference Result 691 states and 947 transitions. [2018-12-09 18:45:21,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-12-09 18:45:21,903 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1076 [2018-12-09 18:45:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:21,905 INFO L225 Difference]: With dead ends: 691 [2018-12-09 18:45:21,905 INFO L226 Difference]: Without dead ends: 424 [2018-12-09 18:45:21,906 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2210 GetRequests, 2124 SyntacticMatches, 17 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=734, Invalid=4236, Unknown=0, NotChecked=0, Total=4970 [2018-12-09 18:45:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2018-12-09 18:45:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 376. [2018-12-09 18:45:21,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-12-09 18:45:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 503 transitions. [2018-12-09 18:45:21,924 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 503 transitions. Word has length 1076 [2018-12-09 18:45:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:21,925 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 503 transitions. [2018-12-09 18:45:21,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-09 18:45:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 503 transitions. [2018-12-09 18:45:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2018-12-09 18:45:21,929 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:21,930 INFO L402 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 57, 57, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 22, 22, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:21,930 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:21,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:21,930 INFO L82 PathProgramCache]: Analyzing trace with hash 604252603, now seen corresponding path program 10 times [2018-12-09 18:45:21,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:21,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:21,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:21,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:21,931 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27552 backedges. 972 proven. 3383 refuted. 0 times theorem prover too weak. 23197 trivial. 0 not checked. [2018-12-09 18:45:22,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:22,348 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:22,348 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:22,349 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:22,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:22,349 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:22,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:45:22,356 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 18:45:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:22,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 27552 backedges. 970 proven. 1981 refuted. 0 times theorem prover too weak. 24601 trivial. 0 not checked. [2018-12-09 18:45:22,770 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 27552 backedges. 974 proven. 2010 refuted. 0 times theorem prover too weak. 24568 trivial. 0 not checked. [2018-12-09 18:45:25,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:25,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 19] total 34 [2018-12-09 18:45:25,125 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:25,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-09 18:45:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-09 18:45:25,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 18:45:25,126 INFO L87 Difference]: Start difference. First operand 376 states and 503 transitions. Second operand 26 states. [2018-12-09 18:45:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:26,053 INFO L93 Difference]: Finished difference Result 763 states and 1068 transitions. [2018-12-09 18:45:26,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-12-09 18:45:26,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 967 [2018-12-09 18:45:26,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:26,055 INFO L225 Difference]: With dead ends: 763 [2018-12-09 18:45:26,056 INFO L226 Difference]: Without dead ends: 487 [2018-12-09 18:45:26,057 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2000 GetRequests, 1909 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=810, Invalid=4890, Unknown=0, NotChecked=0, Total=5700 [2018-12-09 18:45:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-12-09 18:45:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 385. [2018-12-09 18:45:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-12-09 18:45:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 522 transitions. [2018-12-09 18:45:26,085 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 522 transitions. Word has length 967 [2018-12-09 18:45:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:26,085 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 522 transitions. [2018-12-09 18:45:26,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-09 18:45:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 522 transitions. [2018-12-09 18:45:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-12-09 18:45:26,091 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:26,091 INFO L402 BasicCegarLoop]: trace histogram [86, 86, 81, 81, 68, 67, 43, 43, 43, 43, 43, 43, 43, 40, 40, 40, 40, 40, 40, 40, 28, 24, 18, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:26,091 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:26,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash -676491364, now seen corresponding path program 11 times [2018-12-09 18:45:26,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:26,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:26,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:45:26,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:26,092 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 38801 backedges. 2580 proven. 1105 refuted. 0 times theorem prover too weak. 35116 trivial. 0 not checked. [2018-12-09 18:45:26,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:26,566 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:26,566 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:26,566 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:26,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:26,566 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:26,572 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:45:26,572 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:45:26,684 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-12-09 18:45:26,684 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:26,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38801 backedges. 16488 proven. 157 refuted. 0 times theorem prover too weak. 22156 trivial. 0 not checked. [2018-12-09 18:45:27,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 38801 backedges. 2609 proven. 875 refuted. 0 times theorem prover too weak. 35317 trivial. 0 not checked. [2018-12-09 18:45:29,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:29,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 15] total 30 [2018-12-09 18:45:29,004 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:29,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 18:45:29,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 18:45:29,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2018-12-09 18:45:29,005 INFO L87 Difference]: Start difference. First operand 385 states and 522 transitions. Second operand 24 states. [2018-12-09 18:45:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:29,673 INFO L93 Difference]: Finished difference Result 776 states and 1101 transitions. [2018-12-09 18:45:29,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-12-09 18:45:29,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 1144 [2018-12-09 18:45:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:29,675 INFO L225 Difference]: With dead ends: 776 [2018-12-09 18:45:29,676 INFO L226 Difference]: Without dead ends: 436 [2018-12-09 18:45:29,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2337 GetRequests, 2267 SyntacticMatches, 13 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=511, Invalid=2911, Unknown=0, NotChecked=0, Total=3422 [2018-12-09 18:45:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-12-09 18:45:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 372. [2018-12-09 18:45:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-12-09 18:45:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 499 transitions. [2018-12-09 18:45:29,695 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 499 transitions. Word has length 1144 [2018-12-09 18:45:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:29,695 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 499 transitions. [2018-12-09 18:45:29,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 18:45:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 499 transitions. [2018-12-09 18:45:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2018-12-09 18:45:29,700 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:29,700 INFO L402 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 61, 61, 38, 38, 38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 24, 23, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:29,700 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:29,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:29,701 INFO L82 PathProgramCache]: Analyzing trace with hash 185562266, now seen corresponding path program 12 times [2018-12-09 18:45:29,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:29,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:29,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:29,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:29,702 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 31636 backedges. 3575 proven. 821 refuted. 0 times theorem prover too weak. 27240 trivial. 0 not checked. [2018-12-09 18:45:30,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:30,140 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:30,140 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:30,140 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:30,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:30,140 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:30,148 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 18:45:30,148 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 18:45:30,244 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 18:45:30,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:30,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 31636 backedges. 1496 proven. 1679 refuted. 0 times theorem prover too weak. 28461 trivial. 0 not checked. [2018-12-09 18:45:30,570 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 31636 backedges. 1500 proven. 1708 refuted. 0 times theorem prover too weak. 28428 trivial. 0 not checked. [2018-12-09 18:45:33,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:33,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 19] total 36 [2018-12-09 18:45:33,590 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:33,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 18:45:33,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 18:45:33,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 18:45:33,591 INFO L87 Difference]: Start difference. First operand 372 states and 499 transitions. Second operand 28 states. [2018-12-09 18:45:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:34,605 INFO L93 Difference]: Finished difference Result 786 states and 1117 transitions. [2018-12-09 18:45:34,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-12-09 18:45:34,605 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 1035 [2018-12-09 18:45:34,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:34,608 INFO L225 Difference]: With dead ends: 786 [2018-12-09 18:45:34,608 INFO L226 Difference]: Without dead ends: 440 [2018-12-09 18:45:34,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2140 GetRequests, 2043 SyntacticMatches, 17 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=897, Invalid=5745, Unknown=0, NotChecked=0, Total=6642 [2018-12-09 18:45:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-12-09 18:45:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 382. [2018-12-09 18:45:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-12-09 18:45:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 484 transitions. [2018-12-09 18:45:34,628 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 484 transitions. Word has length 1035 [2018-12-09 18:45:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:34,629 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 484 transitions. [2018-12-09 18:45:34,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-09 18:45:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 484 transitions. [2018-12-09 18:45:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2018-12-09 18:45:34,636 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:34,636 INFO L402 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 82, 82, 51, 51, 51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 32, 31, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:34,636 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:34,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1927837140, now seen corresponding path program 13 times [2018-12-09 18:45:34,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:34,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:34,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:34,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:34,637 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 57446 backedges. 2149 proven. 6053 refuted. 0 times theorem prover too weak. 49244 trivial. 0 not checked. [2018-12-09 18:45:35,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:35,327 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:35,327 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:35,327 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:35,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:35,327 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:35,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:45:35,333 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 18:45:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:35,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 57446 backedges. 2107 proven. 2950 refuted. 0 times theorem prover too weak. 52389 trivial. 0 not checked. [2018-12-09 18:45:36,006 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 57446 backedges. 2103 proven. 2994 refuted. 0 times theorem prover too weak. 52349 trivial. 0 not checked. [2018-12-09 18:45:39,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:39,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 22] total 38 [2018-12-09 18:45:39,392 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:39,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 18:45:39,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 18:45:39,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 18:45:39,393 INFO L87 Difference]: Start difference. First operand 382 states and 484 transitions. Second operand 28 states. [2018-12-09 18:45:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:40,200 INFO L93 Difference]: Finished difference Result 705 states and 913 transitions. [2018-12-09 18:45:40,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-12-09 18:45:40,200 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 1389 [2018-12-09 18:45:40,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:40,203 INFO L225 Difference]: With dead ends: 705 [2018-12-09 18:45:40,203 INFO L226 Difference]: Without dead ends: 356 [2018-12-09 18:45:40,204 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2846 GetRequests, 2754 SyntacticMatches, 20 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=776, Invalid=4626, Unknown=0, NotChecked=0, Total=5402 [2018-12-09 18:45:40,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-12-09 18:45:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 353. [2018-12-09 18:45:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-12-09 18:45:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 434 transitions. [2018-12-09 18:45:40,220 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 434 transitions. Word has length 1389 [2018-12-09 18:45:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:40,221 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 434 transitions. [2018-12-09 18:45:40,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-09 18:45:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 434 transitions. [2018-12-09 18:45:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2018-12-09 18:45:40,228 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:40,229 INFO L402 BasicCegarLoop]: trace histogram [102, 102, 101, 101, 83, 81, 51, 51, 51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 50, 32, 31, 21, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:40,229 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:40,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:40,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2057672348, now seen corresponding path program 14 times [2018-12-09 18:45:40,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:40,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:40,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:45:40,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:40,230 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 57447 backedges. 4327 proven. 1999 refuted. 0 times theorem prover too weak. 51121 trivial. 0 not checked. [2018-12-09 18:45:40,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:40,893 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:40,893 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:40,893 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:40,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:40,893 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:40,899 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 18:45:40,899 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-09 18:45:41,062 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-12-09 18:45:41,062 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:41,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 57447 backedges. 3326 proven. 454 refuted. 0 times theorem prover too weak. 53667 trivial. 0 not checked. [2018-12-09 18:45:41,572 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 57447 backedges. 3326 proven. 479 refuted. 0 times theorem prover too weak. 53642 trivial. 0 not checked. [2018-12-09 18:45:44,077 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:44,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 17] total 33 [2018-12-09 18:45:44,077 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:44,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-09 18:45:44,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-09 18:45:44,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2018-12-09 18:45:44,078 INFO L87 Difference]: Start difference. First operand 353 states and 434 transitions. Second operand 26 states. [2018-12-09 18:45:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:44,835 INFO L93 Difference]: Finished difference Result 583 states and 721 transitions. [2018-12-09 18:45:44,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-12-09 18:45:44,835 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 1389 [2018-12-09 18:45:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:44,837 INFO L225 Difference]: With dead ends: 583 [2018-12-09 18:45:44,837 INFO L226 Difference]: Without dead ends: 347 [2018-12-09 18:45:44,838 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2837 GetRequests, 2756 SyntacticMatches, 15 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=639, Invalid=3917, Unknown=0, NotChecked=0, Total=4556 [2018-12-09 18:45:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-12-09 18:45:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 302. [2018-12-09 18:45:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-12-09 18:45:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 351 transitions. [2018-12-09 18:45:44,853 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 351 transitions. Word has length 1389 [2018-12-09 18:45:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:44,853 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 351 transitions. [2018-12-09 18:45:44,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-09 18:45:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 351 transitions. [2018-12-09 18:45:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2018-12-09 18:45:44,859 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:45:44,860 INFO L402 BasicCegarLoop]: trace histogram [89, 89, 88, 88, 72, 71, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 28, 27, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 18:45:44,860 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:45:44,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:45:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash 416823031, now seen corresponding path program 15 times [2018-12-09 18:45:44,860 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:45:44,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:44,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 18:45:44,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:45:44,861 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:45:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:45:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 43585 backedges. 0 proven. 14453 refuted. 0 times theorem prover too weak. 29132 trivial. 0 not checked. [2018-12-09 18:45:46,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:46,589 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 18:45:46,589 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-09 18:45:46,590 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-09 18:45:46,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 18:45:46,590 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/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 [2018-12-09 18:45:46,596 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 18:45:46,596 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-09 18:45:46,753 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 18:45:46,753 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 18:45:46,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:45:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 43585 backedges. 0 proven. 14453 refuted. 0 times theorem prover too weak. 29132 trivial. 0 not checked. [2018-12-09 18:45:48,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 18:45:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 43585 backedges. 0 proven. 14453 refuted. 0 times theorem prover too weak. 29132 trivial. 0 not checked. [2018-12-09 18:45:56,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 18:45:56,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 68 [2018-12-09 18:45:56,769 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 18:45:56,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-12-09 18:45:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-12-09 18:45:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2018-12-09 18:45:56,770 INFO L87 Difference]: Start difference. First operand 302 states and 351 transitions. Second operand 68 states. [2018-12-09 18:45:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:45:57,480 INFO L93 Difference]: Finished difference Result 302 states and 351 transitions. [2018-12-09 18:45:57,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-09 18:45:57,480 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 1212 [2018-12-09 18:45:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:45:57,481 INFO L225 Difference]: With dead ends: 302 [2018-12-09 18:45:57,481 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 18:45:57,482 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2780 GetRequests, 2534 SyntacticMatches, 180 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2018-12-09 18:45:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 18:45:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 18:45:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 18:45:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 18:45:57,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1212 [2018-12-09 18:45:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:45:57,483 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 18:45:57,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-12-09 18:45:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 18:45:57,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 18:45:57,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 18:45:57,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,611 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,638 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,669 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,676 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,729 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,766 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,819 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:57,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,022 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,041 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,056 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,087 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,093 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,099 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,105 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,105 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,113 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,113 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,200 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,202 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,218 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,229 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,237 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,253 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,268 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,326 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,378 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,420 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,443 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,448 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,464 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,480 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,482 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,518 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,539 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,539 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,550 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,552 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,564 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,579 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,608 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,618 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,622 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,648 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,650 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,667 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,678 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,680 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,689 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,709 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,711 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,711 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,717 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,728 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,735 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,743 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,748 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,759 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,765 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,785 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,786 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,789 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,789 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,805 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,814 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,814 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,817 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,823 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,830 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,831 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,844 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,895 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,896 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,921 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,926 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,928 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,939 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,967 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,983 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,998 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:58,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,005 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,005 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,045 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,046 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,063 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,159 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,176 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,191 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,192 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,220 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,236 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,237 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,240 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,244 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,245 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,247 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,247 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,326 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,326 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,326 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,333 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,348 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,387 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,473 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,479 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,480 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,612 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:45:59,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:46:00,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:46:00,152 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:46:00,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 18:46:01,031 WARN L180 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 13 [2018-12-09 18:46:01,416 WARN L180 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 1 [2018-12-09 18:46:01,634 WARN L180 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 1 [2018-12-09 18:46:04,739 WARN L180 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 447 DAG size of output: 64 [2018-12-09 18:46:05,392 WARN L180 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 8 [2018-12-09 18:46:07,139 WARN L180 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 371 DAG size of output: 57 [2018-12-09 18:46:07,142 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 18:46:07,142 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (= main_~x~0 10) [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L448 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-12-09 18:46:07,142 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-12-09 18:46:07,142 INFO L444 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (or (< 3 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)) (<= 2 fibo2_~n) (<= |fibo2_#in~n| fibo2_~n)) [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (or (< 3 |fibo2_#in~n|) (<= |fibo2_#in~n| 2)) (or (<= |fibo2_#in~n| 7) (<= 9 |fibo2_#in~n|) (and (<= |fibo2_#t~ret2| 13) (<= 13 |fibo2_#t~ret2|))) (<= 2 fibo2_~n) (<= |fibo2_#in~n| fibo2_~n) (or (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1)) (<= 4 fibo2_~n)) (or (not (= |fibo2_#in~n| 4)) (and (<= |fibo2_#t~ret2| 2) (<= 2 |fibo2_#t~ret2|))) (or (not (= |fibo2_#in~n| 7)) (and (<= |fibo2_#t~ret2| 8) (<= 8 |fibo2_#t~ret2|))) (or (<= |fibo2_#in~n| 5) (<= 7 fibo2_~n) (and (<= 5 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 5))) (or (not (= |fibo2_#in~n| 9)) (and (<= 21 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 21))) (or (<= 6 fibo2_~n) (<= |fibo2_#in~n| 4) (and (<= |fibo2_#t~ret2| 3) (<= 3 |fibo2_#t~ret2|)))) [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-12-09 18:46:07,143 INFO L444 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (< 3 |fibo1_#in~n|) (<= fibo1_~n |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L444 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse2 (<= fibo1_~n |fibo1_#in~n|))) (let ((.cse0 (and .cse2 (<= 6 |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n))) (.cse1 (and .cse2 (<= 4 fibo1_~n) (<= |fibo1_#in~n| 4)))) (and (or (<= 8 fibo1_~n) (<= |fibo1_#in~n| 6) (and (<= 8 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 8))) (or (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3)) .cse0 .cse1) (or (and (<= 2 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 2)) (<= 5 |fibo1_#in~n|)) (or (not (= |fibo1_#in~n| 10)) (and (<= |fibo1_#t~ret0| 34) (<= 34 |fibo1_#t~ret0|))) (or (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|)) (not (= |fibo1_#in~n| 6))) (or (not (= |fibo1_#in~n| 8)) (and (<= |fibo1_#t~ret0| 13) (<= 13 |fibo1_#t~ret0|))) (or .cse0 .cse1 (and (<= |fibo1_#in~n| 5) .cse2 (<= 5 fibo1_~n)))))) [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-12-09 18:46:07,143 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-12-09 18:46:07,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:46:07 BoogieIcfgContainer [2018-12-09 18:46:07,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 18:46:07,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 18:46:07,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 18:46:07,145 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 18:46:07,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:41:21" (3/4) ... [2018-12-09 18:46:07,148 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 18:46:07,151 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 18:46:07,151 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 18:46:07,151 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-12-09 18:46:07,151 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-12-09 18:46:07,154 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 18:46:07,154 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 18:46:07,154 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 18:46:07,177 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_019aa759-fc12-4abf-8539-511976fb44ae/bin-2019/utaipan/witness.graphml [2018-12-09 18:46:07,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 18:46:07,178 INFO L168 Benchmark]: Toolchain (without parser) took 286424.05 ms. Allocated memory was 1.0 GB in the beginning and 6.3 GB in the end (delta: 5.3 GB). Free memory was 953.5 MB in the beginning and 4.3 GB in the end (delta: -3.4 GB). Peak memory consumption was 1.9 GB. Max. memory is 11.5 GB. [2018-12-09 18:46:07,178 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 18:46:07,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.74 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 18:46:07,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.43 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 18:46:07,179 INFO L168 Benchmark]: Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 18:46:07,179 INFO L168 Benchmark]: RCFGBuilder took 150.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 18:46:07,179 INFO L168 Benchmark]: TraceAbstraction took 286096.95 ms. Allocated memory was 1.1 GB in the beginning and 6.3 GB in the end (delta: 5.2 GB). Free memory was 1.1 GB in the beginning and 4.3 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.2 GB. Max. memory is 11.5 GB. [2018-12-09 18:46:07,179 INFO L168 Benchmark]: Witness Printer took 32.31 ms. Allocated memory is still 6.3 GB. Free memory was 4.3 GB in the beginning and 4.3 GB in the end (delta: 50.3 kB). Peak memory consumption was 50.3 kB. Max. memory is 11.5 GB. [2018-12-09 18:46:07,180 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.74 ms. Allocated memory is still 1.0 GB. Free memory was 953.5 MB in the beginning and 942.7 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 11.43 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.51 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 150.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 286096.95 ms. Allocated memory was 1.1 GB in the beginning and 6.3 GB in the end (delta: 5.2 GB). Free memory was 1.1 GB in the beginning and 4.3 GB in the end (delta: -3.2 GB). Peak memory consumption was 3.2 GB. Max. memory is 11.5 GB. * Witness Printer took 32.31 ms. Allocated memory is still 6.3 GB. Free memory was 4.3 GB in the beginning and 4.3 GB in the end (delta: 50.3 kB). Peak memory consumption was 50.3 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 286.0s OverallTime, 26 OverallIterations, 133 TraceHistogramMax, 12.7s AutomataDifference, 0.0s DeadEndRemovalTime, 9.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 1181 SDtfs, 2236 SDslu, 14241 SDs, 0 SdLazy, 17587 SolverSat, 2522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 38561 GetRequests, 37060 SyntacticMatches, 440 SemanticMatches, 1061 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14412 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 195.2s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.8747747747747748 AbsIntWeakeningRatio, 0.5783783783783784 AbsIntAvgWeakeningVarsNumRemoved, 0.1972972972972973 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 828 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 3164 PreInvPairs, 6641 NumberOfFragments, 268 HoareAnnotationTreeSize, 3164 FomulaSimplifications, 963760 FormulaSimplificationTreeSizeReduction, 2.8s HoareSimplificationTime, 11 FomulaSimplificationsInter, 722861 FormulaSimplificationTreeSizeReductionInter, 6.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 58.3s InterpolantComputationTime, 37454 NumberOfCodeBlocks, 32017 NumberOfCodeBlocksAsserted, 160 NumberOfCheckSat, 55916 ConstructedInterpolants, 0 QuantifiedInterpolants, 92256787 SizeOfPredicates, 145 NumberOfNonLiveVariables, 28483 ConjunctsInSsa, 991 ConjunctsInUnsatCore, 64 InterpolantComputations, 2 PerfectInterpolantSequences, 1932035/2069412 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...