./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd6d4490a7412402195d3193de0347508566f7c8 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:15:26,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:15:26,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:15:26,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:15:26,889 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:15:26,889 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:15:26,890 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:15:26,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:15:26,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:15:26,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:15:26,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:15:26,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:15:26,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:15:26,893 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:15:26,894 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:15:26,894 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:15:26,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:15:26,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:15:26,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:15:26,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:15:26,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:15:26,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:15:26,901 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:15:26,901 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:15:26,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:15:26,902 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:15:26,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:15:26,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:15:26,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:15:26,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:15:26,904 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:15:26,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:15:26,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:15:26,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:15:26,906 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:15:26,906 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:15:26,906 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 13:15:26,914 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:15:26,914 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:15:26,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:15:26,915 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:15:26,915 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:15:26,915 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:15:26,916 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:15:26,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:15:26,916 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:15:26,916 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:15:26,916 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:15:26,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:15:26,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:15:26,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:15:26,918 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:15:26,918 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:15:26,918 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:15:26,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:15:26,918 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:15:26,919 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:15:26,919 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:15:26,919 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:15:26,919 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:15:26,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:15:26,919 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6d4490a7412402195d3193de0347508566f7c8 [2018-11-28 13:15:26,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:15:26,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:15:26,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:15:26,955 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:15:26,956 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:15:26,956 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-28 13:15:26,994 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/data/d24b582ed/a1bca5fae6c84f3dbeebd520871c4a82/FLAG0544445f4 [2018-11-28 13:15:27,388 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:15:27,389 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/sv-benchmarks/c/recursive-simple/fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-28 13:15:27,394 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/data/d24b582ed/a1bca5fae6c84f3dbeebd520871c4a82/FLAG0544445f4 [2018-11-28 13:15:27,406 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/data/d24b582ed/a1bca5fae6c84f3dbeebd520871c4a82 [2018-11-28 13:15:27,408 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:15:27,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:15:27,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:15:27,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:15:27,412 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:15:27,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6b7f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27, skipping insertion in model container [2018-11-28 13:15:27,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:15:27,431 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:15:27,527 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:15:27,530 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:15:27,539 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:15:27,547 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:15:27,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27 WrapperNode [2018-11-28 13:15:27,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:15:27,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:15:27,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:15:27,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:15:27,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:15:27,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:15:27,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:15:27,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:15:27,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... [2018-11-28 13:15:27,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:15:27,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:15:27,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:15:27,573 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:15:27,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:15:27,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:15:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:15:27,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:15:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:15:27,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:15:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-28 13:15:27,645 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-28 13:15:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-28 13:15:27,645 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-28 13:15:27,801 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:15:27,801 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 13:15:27,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:15:27 BoogieIcfgContainer [2018-11-28 13:15:27,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:15:27,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:15:27,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:15:27,805 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:15:27,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:15:27" (1/3) ... [2018-11-28 13:15:27,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf99721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:15:27, skipping insertion in model container [2018-11-28 13:15:27,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:15:27" (2/3) ... [2018-11-28 13:15:27,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf99721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:15:27, skipping insertion in model container [2018-11-28 13:15:27,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:15:27" (3/3) ... [2018-11-28 13:15:27,808 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8_true-unreach-call_true-termination.c [2018-11-28 13:15:27,816 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:15:27,822 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 13:15:27,836 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 13:15:27,863 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:15:27,864 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:15:27,864 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:15:27,864 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:15:27,864 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:15:27,864 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:15:27,864 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:15:27,864 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:15:27,864 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:15:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-28 13:15:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 13:15:27,881 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:27,881 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:27,883 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:27,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-28 13:15:27,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:27,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:27,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:27,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:27,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:28,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:15:28,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:15:28,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:15:28,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:15:28,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:15:28,033 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-28 13:15:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:28,107 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-28 13:15:28,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:15:28,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-28 13:15:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:28,114 INFO L225 Difference]: With dead ends: 44 [2018-11-28 13:15:28,114 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 13:15:28,116 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 [2018-11-28 13:15:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 13:15:28,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-28 13:15:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 13:15:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-28 13:15:28,142 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-28 13:15:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:28,143 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-28 13:15:28,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:15:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-28 13:15:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 13:15:28,144 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:28,144 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:28,145 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:28,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:28,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-28 13:15:28,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:28,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:28,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:15:28,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:15:28,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 13:15:28,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:15:28,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:15:28,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:15:28,181 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-28 13:15:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:28,249 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-28 13:15:28,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:15:28,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-28 13:15:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:28,251 INFO L225 Difference]: With dead ends: 36 [2018-11-28 13:15:28,251 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 13:15:28,252 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 [2018-11-28 13:15:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 13:15:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-28 13:15:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 13:15:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-28 13:15:28,258 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-28 13:15:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:28,258 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-28 13:15:28,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:15:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-28 13:15:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:15:28,259 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:28,260 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] [2018-11-28 13:15:28,260 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:28,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:28,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-28 13:15:28,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:28,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:28,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:15:28,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:28,329 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:28,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:15:28,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:28,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-11-28 13:15:28,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:15:28,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:15:28,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:15:28,429 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2018-11-28 13:15:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:28,576 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2018-11-28 13:15:28,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:15:28,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-11-28 13:15:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:28,578 INFO L225 Difference]: With dead ends: 58 [2018-11-28 13:15:28,578 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 13:15:28,579 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:15:28,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 13:15:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-28 13:15:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 13:15:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-28 13:15:28,585 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2018-11-28 13:15:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:28,585 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-28 13:15:28,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:15:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-11-28 13:15:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 13:15:28,586 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:28,586 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:28,587 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:28,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:28,587 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2018-11-28 13:15:28,587 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:28,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:28,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:15:28,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:28,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:28,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 13:15:28,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:28,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:15:28,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:15:28,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:15:28,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:15:28,699 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2018-11-28 13:15:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:28,784 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2018-11-28 13:15:28,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 13:15:28,784 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-28 13:15:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:28,785 INFO L225 Difference]: With dead ends: 43 [2018-11-28 13:15:28,785 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 13:15:28,786 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:15:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 13:15:28,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-11-28 13:15:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:15:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-28 13:15:28,790 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2018-11-28 13:15:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:28,790 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 13:15:28,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:15:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2018-11-28 13:15:28,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 13:15:28,791 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:28,791 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] [2018-11-28 13:15:28,792 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:28,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:28,792 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-28 13:15:28,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:28,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:28,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:15:28,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:28,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:28,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:28,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 13:15:28,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:28,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2018-11-28 13:15:28,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:15:28,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:15:28,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:15:28,931 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 10 states. [2018-11-28 13:15:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:29,065 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2018-11-28 13:15:29,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:15:29,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2018-11-28 13:15:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:29,067 INFO L225 Difference]: With dead ends: 70 [2018-11-28 13:15:29,067 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 13:15:29,068 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:15:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 13:15:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 13:15:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 13:15:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-28 13:15:29,074 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2018-11-28 13:15:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:29,074 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 13:15:29,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:15:29,074 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-11-28 13:15:29,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 13:15:29,075 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:29,075 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, 1] [2018-11-28 13:15:29,076 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:29,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:29,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2018-11-28 13:15:29,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:29,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:29,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:29,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:29,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 13:15:29,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:29,114 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:29,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:29,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 13:15:29,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:29,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-11-28 13:15:29,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:15:29,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:15:29,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:15:29,181 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 10 states. [2018-11-28 13:15:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:29,277 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2018-11-28 13:15:29,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:15:29,278 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-11-28 13:15:29,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:29,279 INFO L225 Difference]: With dead ends: 61 [2018-11-28 13:15:29,280 INFO L226 Difference]: Without dead ends: 57 [2018-11-28 13:15:29,280 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:15:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-28 13:15:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2018-11-28 13:15:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 13:15:29,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-11-28 13:15:29,289 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 40 [2018-11-28 13:15:29,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:29,289 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-11-28 13:15:29,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:15:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-11-28 13:15:29,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-28 13:15:29,291 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:29,291 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:29,291 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:29,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2018-11-28 13:15:29,292 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:29,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:29,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:29,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:29,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 13:15:29,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:29,363 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:29,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:29,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 13:15:29,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:29,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-11-28 13:15:29,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:15:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:15:29,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:15:29,447 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 10 states. [2018-11-28 13:15:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:29,541 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2018-11-28 13:15:29,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:15:29,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-28 13:15:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:29,543 INFO L225 Difference]: With dead ends: 71 [2018-11-28 13:15:29,543 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 13:15:29,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:15:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 13:15:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2018-11-28 13:15:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 13:15:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2018-11-28 13:15:29,553 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 54 [2018-11-28 13:15:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:29,554 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2018-11-28 13:15:29,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:15:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2018-11-28 13:15:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-28 13:15:29,556 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:29,556 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:29,556 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:29,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 671849284, now seen corresponding path program 2 times [2018-11-28 13:15:29,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:29,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:29,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-28 13:15:29,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:29,638 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:29,645 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:15:29,659 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:15:29,659 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:29,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 63 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-28 13:15:29,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:29,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2018-11-28 13:15:29,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 13:15:29,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 13:15:29,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:15:29,774 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 16 states. [2018-11-28 13:15:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:30,115 INFO L93 Difference]: Finished difference Result 146 states and 299 transitions. [2018-11-28 13:15:30,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 13:15:30,115 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2018-11-28 13:15:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:30,118 INFO L225 Difference]: With dead ends: 146 [2018-11-28 13:15:30,118 INFO L226 Difference]: Without dead ends: 103 [2018-11-28 13:15:30,119 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2018-11-28 13:15:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-28 13:15:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 87. [2018-11-28 13:15:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 13:15:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 157 transitions. [2018-11-28 13:15:30,135 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 157 transitions. Word has length 80 [2018-11-28 13:15:30,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:30,135 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 157 transitions. [2018-11-28 13:15:30,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 13:15:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 157 transitions. [2018-11-28 13:15:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-28 13:15:30,138 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:30,138 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:30,138 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:30,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:30,139 INFO L82 PathProgramCache]: Analyzing trace with hash 389486837, now seen corresponding path program 2 times [2018-11-28 13:15:30,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:30,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:30,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:30,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:30,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 73 proven. 134 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2018-11-28 13:15:30,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:30,244 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:30,250 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:15:30,284 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:15:30,284 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:30,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 36 proven. 202 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2018-11-28 13:15:30,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:30,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-11-28 13:15:30,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:15:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:15:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:15:30,431 INFO L87 Difference]: Start difference. First operand 87 states and 157 transitions. Second operand 18 states. [2018-11-28 13:15:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:30,995 INFO L93 Difference]: Finished difference Result 232 states and 520 transitions. [2018-11-28 13:15:30,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-28 13:15:30,996 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 148 [2018-11-28 13:15:30,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:30,998 INFO L225 Difference]: With dead ends: 232 [2018-11-28 13:15:30,999 INFO L226 Difference]: Without dead ends: 129 [2018-11-28 13:15:31,000 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2018-11-28 13:15:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-11-28 13:15:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2018-11-28 13:15:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-11-28 13:15:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 184 transitions. [2018-11-28 13:15:31,016 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 184 transitions. Word has length 148 [2018-11-28 13:15:31,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:31,018 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 184 transitions. [2018-11-28 13:15:31,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:15:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 184 transitions. [2018-11-28 13:15:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-11-28 13:15:31,021 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:31,022 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 16, 16, 16, 14, 12, 12, 12, 12, 12, 12, 12, 11, 8, 8, 8, 8, 8, 8, 8, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:31,022 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:31,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:31,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1547830767, now seen corresponding path program 1 times [2018-11-28 13:15:31,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:31,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:31,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:31,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:31,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 142 proven. 366 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2018-11-28 13:15:31,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:31,184 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:31,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:31,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2267 backedges. 96 proven. 556 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2018-11-28 13:15:31,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:31,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-11-28 13:15:31,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:15:31,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:15:31,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:15:31,441 INFO L87 Difference]: Start difference. First operand 118 states and 184 transitions. Second operand 18 states. [2018-11-28 13:15:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:31,955 INFO L93 Difference]: Finished difference Result 290 states and 587 transitions. [2018-11-28 13:15:31,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-28 13:15:31,955 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 283 [2018-11-28 13:15:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:31,958 INFO L225 Difference]: With dead ends: 290 [2018-11-28 13:15:31,958 INFO L226 Difference]: Without dead ends: 179 [2018-11-28 13:15:31,959 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:15:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-11-28 13:15:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 154. [2018-11-28 13:15:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-28 13:15:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 252 transitions. [2018-11-28 13:15:31,974 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 252 transitions. Word has length 283 [2018-11-28 13:15:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:31,974 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 252 transitions. [2018-11-28 13:15:31,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:15:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 252 transitions. [2018-11-28 13:15:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-11-28 13:15:31,981 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:31,981 INFO L402 BasicCegarLoop]: trace histogram [41, 41, 32, 32, 32, 28, 20, 20, 20, 20, 20, 20, 20, 16, 16, 16, 16, 16, 16, 16, 16, 9, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:31,981 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:31,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:31,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1118639085, now seen corresponding path program 1 times [2018-11-28 13:15:31,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:31,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:31,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:31,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:31,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7378 backedges. 355 proven. 621 refuted. 0 times theorem prover too weak. 6402 trivial. 0 not checked. [2018-11-28 13:15:32,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:32,187 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:32,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:32,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7378 backedges. 250 proven. 839 refuted. 0 times theorem prover too weak. 6289 trivial. 0 not checked. [2018-11-28 13:15:32,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:32,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-28 13:15:32,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 13:15:32,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 13:15:32,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:15:32,460 INFO L87 Difference]: Start difference. First operand 154 states and 252 transitions. Second operand 19 states. [2018-11-28 13:15:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:32,923 INFO L93 Difference]: Finished difference Result 415 states and 873 transitions. [2018-11-28 13:15:32,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-28 13:15:32,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 505 [2018-11-28 13:15:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:32,928 INFO L225 Difference]: With dead ends: 415 [2018-11-28 13:15:32,928 INFO L226 Difference]: Without dead ends: 260 [2018-11-28 13:15:32,931 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2018-11-28 13:15:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-11-28 13:15:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 201. [2018-11-28 13:15:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-11-28 13:15:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 378 transitions. [2018-11-28 13:15:32,950 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 378 transitions. Word has length 505 [2018-11-28 13:15:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:32,951 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 378 transitions. [2018-11-28 13:15:32,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 13:15:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 378 transitions. [2018-11-28 13:15:32,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-11-28 13:15:32,959 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:32,959 INFO L402 BasicCegarLoop]: trace histogram [33, 33, 28, 28, 25, 24, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 11, 8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:32,960 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:32,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:32,960 INFO L82 PathProgramCache]: Analyzing trace with hash -191687021, now seen corresponding path program 2 times [2018-11-28 13:15:32,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:32,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:32,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:32,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:32,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5044 backedges. 676 proven. 480 refuted. 0 times theorem prover too weak. 3888 trivial. 0 not checked. [2018-11-28 13:15:33,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:33,164 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:33,169 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:15:33,228 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:15:33,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:33,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5044 backedges. 282 proven. 610 refuted. 0 times theorem prover too weak. 4152 trivial. 0 not checked. [2018-11-28 13:15:33,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:33,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 22 [2018-11-28 13:15:33,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 13:15:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 13:15:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:15:33,384 INFO L87 Difference]: Start difference. First operand 201 states and 378 transitions. Second operand 22 states. [2018-11-28 13:15:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:33,967 INFO L93 Difference]: Finished difference Result 569 states and 1354 transitions. [2018-11-28 13:15:33,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-28 13:15:33,968 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 422 [2018-11-28 13:15:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:33,972 INFO L225 Difference]: With dead ends: 569 [2018-11-28 13:15:33,972 INFO L226 Difference]: Without dead ends: 379 [2018-11-28 13:15:33,974 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2018-11-28 13:15:33,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-11-28 13:15:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 260. [2018-11-28 13:15:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2018-11-28 13:15:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 479 transitions. [2018-11-28 13:15:33,992 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 479 transitions. Word has length 422 [2018-11-28 13:15:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:33,992 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 479 transitions. [2018-11-28 13:15:33,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 13:15:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 479 transitions. [2018-11-28 13:15:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-11-28 13:15:33,996 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:33,996 INFO L402 BasicCegarLoop]: trace histogram [41, 41, 38, 38, 32, 32, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 13, 12, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:33,996 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:33,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:33,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1363243466, now seen corresponding path program 3 times [2018-11-28 13:15:33,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:33,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:33,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:33,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:33,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8528 backedges. 914 proven. 349 refuted. 0 times theorem prover too weak. 7265 trivial. 0 not checked. [2018-11-28 13:15:34,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:34,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:34,229 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:15:34,303 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-11-28 13:15:34,303 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:34,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8528 backedges. 3801 proven. 31 refuted. 0 times theorem prover too weak. 4696 trivial. 0 not checked. [2018-11-28 13:15:34,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:34,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 20 [2018-11-28 13:15:34,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:15:34,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:15:34,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:15:34,479 INFO L87 Difference]: Start difference. First operand 260 states and 479 transitions. Second operand 20 states. [2018-11-28 13:15:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:34,865 INFO L93 Difference]: Finished difference Result 575 states and 1192 transitions. [2018-11-28 13:15:34,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-28 13:15:34,865 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 545 [2018-11-28 13:15:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:34,869 INFO L225 Difference]: With dead ends: 575 [2018-11-28 13:15:34,869 INFO L226 Difference]: Without dead ends: 320 [2018-11-28 13:15:34,871 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2018-11-28 13:15:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-11-28 13:15:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 287. [2018-11-28 13:15:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-11-28 13:15:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 539 transitions. [2018-11-28 13:15:34,889 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 539 transitions. Word has length 545 [2018-11-28 13:15:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:34,889 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 539 transitions. [2018-11-28 13:15:34,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:15:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 539 transitions. [2018-11-28 13:15:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-11-28 13:15:34,893 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:34,893 INFO L402 BasicCegarLoop]: trace histogram [49, 49, 44, 44, 38, 35, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 22, 22, 22, 22, 16, 11, 11, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:34,893 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:34,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:34,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1074348859, now seen corresponding path program 4 times [2018-11-28 13:15:34,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:34,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:34,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:34,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11814 backedges. 403 proven. 967 refuted. 0 times theorem prover too weak. 10444 trivial. 0 not checked. [2018-11-28 13:15:35,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:35,134 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:35,142 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:15:35,223 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:15:35,223 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:35,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 11814 backedges. 372 proven. 1126 refuted. 0 times theorem prover too weak. 10316 trivial. 0 not checked. [2018-11-28 13:15:35,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:35,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2018-11-28 13:15:35,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:15:35,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:15:35,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:15:35,465 INFO L87 Difference]: Start difference. First operand 287 states and 539 transitions. Second operand 20 states. [2018-11-28 13:15:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:35,879 INFO L93 Difference]: Finished difference Result 655 states and 1443 transitions. [2018-11-28 13:15:35,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 13:15:35,880 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 638 [2018-11-28 13:15:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:35,882 INFO L225 Difference]: With dead ends: 655 [2018-11-28 13:15:35,882 INFO L226 Difference]: Without dead ends: 199 [2018-11-28 13:15:35,884 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 629 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:15:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-11-28 13:15:35,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 192. [2018-11-28 13:15:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-28 13:15:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2018-11-28 13:15:35,894 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 638 [2018-11-28 13:15:35,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:35,895 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2018-11-28 13:15:35,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:15:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2018-11-28 13:15:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-11-28 13:15:35,898 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:35,898 INFO L402 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 43, 42, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 17, 16, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:35,898 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:35,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2125745299, now seen corresponding path program 5 times [2018-11-28 13:15:35,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:35,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:35,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:35,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:35,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 1569 proven. 415 refuted. 0 times theorem prover too weak. 13196 trivial. 0 not checked. [2018-11-28 13:15:36,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:36,231 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:36,236 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:15:36,338 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-28 13:15:36,338 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:36,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 8451 proven. 169 refuted. 0 times theorem prover too weak. 6560 trivial. 0 not checked. [2018-11-28 13:15:36,596 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:36,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2018-11-28 13:15:36,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-28 13:15:36,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-28 13:15:36,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2018-11-28 13:15:36,597 INFO L87 Difference]: Start difference. First operand 192 states and 284 transitions. Second operand 25 states. [2018-11-28 13:15:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:37,163 INFO L93 Difference]: Finished difference Result 361 states and 562 transitions. [2018-11-28 13:15:37,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-28 13:15:37,164 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 722 [2018-11-28 13:15:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:37,165 INFO L225 Difference]: With dead ends: 361 [2018-11-28 13:15:37,165 INFO L226 Difference]: Without dead ends: 165 [2018-11-28 13:15:37,166 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:15:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-11-28 13:15:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 154. [2018-11-28 13:15:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-28 13:15:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2018-11-28 13:15:37,175 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 722 [2018-11-28 13:15:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:37,175 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2018-11-28 13:15:37,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-28 13:15:37,175 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2018-11-28 13:15:37,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-11-28 13:15:37,177 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:37,178 INFO L402 BasicCegarLoop]: trace histogram [43, 43, 36, 36, 33, 31, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 18, 15, 10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:37,178 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:37,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:37,178 INFO L82 PathProgramCache]: Analyzing trace with hash 99178806, now seen corresponding path program 6 times [2018-11-28 13:15:37,178 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:37,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:37,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:37,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:37,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8577 backedges. 827 proven. 179 refuted. 0 times theorem prover too weak. 7571 trivial. 0 not checked. [2018-11-28 13:15:37,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:37,334 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:37,341 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:15:37,406 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-28 13:15:37,406 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:37,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8577 backedges. 883 proven. 123 refuted. 0 times theorem prover too weak. 7571 trivial. 0 not checked. [2018-11-28 13:15:37,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:37,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-11-28 13:15:37,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:15:37,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:15:37,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:15:37,590 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand 12 states. [2018-11-28 13:15:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:37,749 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2018-11-28 13:15:37,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:15:37,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 545 [2018-11-28 13:15:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:37,752 INFO L225 Difference]: With dead ends: 161 [2018-11-28 13:15:37,752 INFO L226 Difference]: Without dead ends: 154 [2018-11-28 13:15:37,752 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-28 13:15:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-11-28 13:15:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-11-28 13:15:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-28 13:15:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 188 transitions. [2018-11-28 13:15:37,760 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 188 transitions. Word has length 545 [2018-11-28 13:15:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:37,761 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 188 transitions. [2018-11-28 13:15:37,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:15:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 188 transitions. [2018-11-28 13:15:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-11-28 13:15:37,763 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:37,764 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 42, 42, 37, 35, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 21, 21, 21, 21, 16, 12, 10, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:37,764 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:37,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:37,764 INFO L82 PathProgramCache]: Analyzing trace with hash 400753429, now seen corresponding path program 7 times [2018-11-28 13:15:37,764 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:37,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:37,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:37,765 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:37,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10881 backedges. 475 proven. 1186 refuted. 0 times theorem prover too weak. 9220 trivial. 0 not checked. [2018-11-28 13:15:38,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:38,000 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:38,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:38,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 10881 backedges. 477 proven. 1181 refuted. 0 times theorem prover too weak. 9223 trivial. 0 not checked. [2018-11-28 13:15:38,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:38,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 16 [2018-11-28 13:15:38,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 13:15:38,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 13:15:38,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:15:38,261 INFO L87 Difference]: Start difference. First operand 154 states and 188 transitions. Second operand 16 states. [2018-11-28 13:15:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:38,403 INFO L93 Difference]: Finished difference Result 171 states and 209 transitions. [2018-11-28 13:15:38,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 13:15:38,404 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 613 [2018-11-28 13:15:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:38,405 INFO L225 Difference]: With dead ends: 171 [2018-11-28 13:15:38,405 INFO L226 Difference]: Without dead ends: 154 [2018-11-28 13:15:38,406 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 616 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:15:38,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-11-28 13:15:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2018-11-28 13:15:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-28 13:15:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-11-28 13:15:38,413 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 613 [2018-11-28 13:15:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:38,413 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-11-28 13:15:38,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 13:15:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-11-28 13:15:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-11-28 13:15:38,415 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:38,415 INFO L402 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 31, 31, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 12, 12, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:38,416 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:38,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:38,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1726451101, now seen corresponding path program 8 times [2018-11-28 13:15:38,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:38,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:38,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:38,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:15:38,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 608 proven. 1515 refuted. 0 times theorem prover too weak. 5951 trivial. 0 not checked. [2018-11-28 13:15:38,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:38,656 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:38,666 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:15:38,754 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:15:38,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:38,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 621 proven. 789 refuted. 0 times theorem prover too weak. 6664 trivial. 0 not checked. [2018-11-28 13:15:38,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:38,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 24 [2018-11-28 13:15:38,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 13:15:38,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 13:15:38,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2018-11-28 13:15:38,983 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 24 states. [2018-11-28 13:15:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:39,602 INFO L93 Difference]: Finished difference Result 327 states and 410 transitions. [2018-11-28 13:15:39,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-28 13:15:39,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 531 [2018-11-28 13:15:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:39,605 INFO L225 Difference]: With dead ends: 327 [2018-11-28 13:15:39,605 INFO L226 Difference]: Without dead ends: 169 [2018-11-28 13:15:39,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1927, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:15:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-11-28 13:15:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2018-11-28 13:15:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-11-28 13:15:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 186 transitions. [2018-11-28 13:15:39,617 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 186 transitions. Word has length 531 [2018-11-28 13:15:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:39,618 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 186 transitions. [2018-11-28 13:15:39,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 13:15:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 186 transitions. [2018-11-28 13:15:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-28 13:15:39,620 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:15:39,620 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:15:39,620 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 13:15:39,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:15:39,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 9 times [2018-11-28 13:15:39,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:15:39,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:15:39,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:39,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:15:39,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:15:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:15:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-28 13:15:40,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:15:40,480 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/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 [2018-11-28 13:15:40,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:15:40,626 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2018-11-28 13:15:40,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:15:40,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:15:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2018-11-28 13:15:41,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:15:41,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2018-11-28 13:15:41,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-28 13:15:41,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-28 13:15:41,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:15:41,304 INFO L87 Difference]: Start difference. First operand 162 states and 186 transitions. Second operand 52 states. [2018-11-28 13:15:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:15:41,765 INFO L93 Difference]: Finished difference Result 162 states and 186 transitions. [2018-11-28 13:15:41,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-28 13:15:41,766 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 463 [2018-11-28 13:15:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:15:41,766 INFO L225 Difference]: With dead ends: 162 [2018-11-28 13:15:41,766 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:15:41,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 514 SyntacticMatches, 35 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:15:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:15:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:15:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:15:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:15:41,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 463 [2018-11-28 13:15:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:15:41,768 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:15:41,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-28 13:15:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:15:41,769 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:15:41,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:15:42,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,098 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,290 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,452 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,456 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,480 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,492 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,492 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,495 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,498 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,704 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,709 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 13:15:42,915 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 7 [2018-11-28 13:15:43,461 WARN L180 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 49 [2018-11-28 13:15:43,603 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 14 [2018-11-28 13:15:44,099 WARN L180 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 42 [2018-11-28 13:15:44,101 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:15:44,101 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:15:44,102 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-28 13:15:44,102 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 8 main_~x~0) (<= main_~x~0 8)) [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-11-28 13:15:44,103 INFO L444 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (<= 2 fibo2_~n) (<= |fibo2_#in~n| fibo2_~n)) [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse4 (<= |fibo2_#in~n| fibo2_~n))) (let ((.cse1 (< |fibo2_#in~n| 4)) (.cse2 (and (<= 5 |fibo2_#in~n|) (<= |fibo2_#in~n| 5))) (.cse0 (and (<= fibo2_~n 4) .cse4 (<= 4 |fibo2_#in~n|)))) (and (or .cse0 (and (<= 5 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 5)) (<= 7 |fibo2_#in~n|) .cse1 .cse2) (or (< 5 |fibo2_#in~n|) (and (<= |fibo2_#t~ret2| 2) (<= 2 |fibo2_#t~ret2|)) .cse1 .cse2) (or (<= |fibo2_#in~n| 6) (<= 8 |fibo2_#in~n|) (and (<= 8 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 8))) (let ((.cse3 (<= fibo2_~n |fibo2_#in~n|))) (or (and .cse3 .cse4 (<= 6 fibo2_~n)) (and .cse3 (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3) .cse4 (<= 4 fibo2_~n)) (and (<= |fibo2_#in~n| 2) (<= 1 |fibo2_#t~ret2|) .cse3 (<= |fibo2_#t~ret2| 1) .cse4 (<= 2 |fibo2_#in~n|)) .cse0))))) [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-11-28 13:15:44,103 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-11-28 13:15:44,104 INFO L444 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (or (and (< 1 fibo1_~n) (<= |fibo1_#in~n| 2)) (< 4 |fibo1_#in~n|)) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L444 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (or (and (<= |fibo1_#in~n| 5) (<= 5 |fibo1_#in~n|)) (<= 7 |fibo1_#in~n|) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|) (<= 5 fibo1_~n)) (and (<= 1 |fibo1_#t~ret0|) (< 1 fibo1_~n) (<= |fibo1_#in~n| 2) (<= |fibo1_#t~ret0| 1))) (or (<= 6 |fibo1_#in~n|) (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3)) (< |fibo1_#in~n| 3)) (<= |fibo1_#in~n| fibo1_~n) (or (<= 9 |fibo1_#in~n|) (<= |fibo1_#in~n| 7) (and (<= |fibo1_#t~ret0| 13) (<= 13 |fibo1_#t~ret0|)))) [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-28 13:15:44,104 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-11-28 13:15:44,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:15:44 BoogieIcfgContainer [2018-11-28 13:15:44,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:15:44,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:15:44,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:15:44,107 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:15:44,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:15:27" (3/4) ... [2018-11-28 13:15:44,111 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:15:44,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:15:44,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:15:44,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-11-28 13:15:44,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-11-28 13:15:44,121 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 13:15:44,121 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 13:15:44,121 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:15:44,153 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_48212036-07d4-4108-b3c2-e64a8f8b03a0/bin-2019/uautomizer/witness.graphml [2018-11-28 13:15:44,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:15:44,153 INFO L168 Benchmark]: Toolchain (without parser) took 16744.68 ms. Allocated memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: 1.2 GB). Free memory was 952.6 MB in the beginning and 1.2 GB in the end (delta: -277.9 MB). Peak memory consumption was 956.8 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:44,154 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:15:44,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.72 ms. Allocated memory is still 1.0 GB. Free memory was 952.6 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:44,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.85 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:15:44,155 INFO L168 Benchmark]: Boogie Preprocessor took 11.70 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:15:44,155 INFO L168 Benchmark]: RCFGBuilder took 229.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -204.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:44,155 INFO L168 Benchmark]: TraceAbstraction took 16304.23 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -86.6 MB). Peak memory consumption was 988.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:15:44,156 INFO L168 Benchmark]: Witness Printer took 45.70 ms. Allocated memory is still 2.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-28 13:15:44,157 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.72 ms. Allocated memory is still 1.0 GB. Free memory was 952.6 MB in the beginning and 941.9 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 12.85 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.70 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 229.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -204.7 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16304.23 ms. Allocated memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: 1.1 GB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -86.6 MB). Peak memory consumption was 988.2 MB. Max. memory is 11.5 GB. * Witness Printer took 45.70 ms. Allocated memory is still 2.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. 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, 16.2s OverallTime, 19 OverallIterations, 53 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 2.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 663 SDtfs, 1092 SDslu, 6640 SDs, 0 SdLazy, 7975 SolverSat, 1171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6230 GetRequests, 5702 SyntacticMatches, 40 SemanticMatches, 488 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2849 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 325 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 1154 PreInvPairs, 2013 NumberOfFragments, 239 HoareAnnotationTreeSize, 1154 FomulaSimplifications, 50410 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 11 FomulaSimplificationsInter, 40151 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 11389 NumberOfCodeBlocks, 10230 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 11353 ConstructedInterpolants, 0 QuantifiedInterpolants, 8335167 SizeOfPredicates, 97 NumberOfNonLiveVariables, 9993 ConjunctsInSsa, 466 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 153115/169172 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...