./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9918b49e0d76e4ce36b6a6760021b33460a8ae9b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:14:16,876 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:14:16,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:14:16,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:14:16,885 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:14:16,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:14:16,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:14:16,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:14:16,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:14:16,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:14:16,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:14:16,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:14:16,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:14:16,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:14:16,893 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:14:16,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:14:16,894 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:14:16,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:14:16,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:14:16,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:14:16,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:14:16,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:14:16,901 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:14:16,901 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:14:16,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:14:16,902 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:14:16,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:14:16,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:14:16,904 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:14:16,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:14:16,905 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:14:16,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:14:16,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:14:16,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:14:16,906 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:14:16,906 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:14:16,907 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-28 12:14:16,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:14:16,916 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:14:16,917 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:14:16,917 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:14:16,917 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:14:16,918 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:14:16,918 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:14:16,919 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:14:16,919 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:14:16,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:14:16,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 12:14:16,920 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_4c249901-e40c-4919-be7a-582841eb0123/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 ! overflow) ) 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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2018-11-28 12:14:16,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:14:16,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:14:16,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:14:16,960 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:14:16,960 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:14:16,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-28 12:14:17,003 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/data/112efabe4/775b2dd4eada453db26d6e3423b6c9f3/FLAGd66dc3a49 [2018-11-28 12:14:17,424 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:14:17,425 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-28 12:14:17,429 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/data/112efabe4/775b2dd4eada453db26d6e3423b6c9f3/FLAGd66dc3a49 [2018-11-28 12:14:17,439 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/data/112efabe4/775b2dd4eada453db26d6e3423b6c9f3 [2018-11-28 12:14:17,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:14:17,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:14:17,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:14:17,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:14:17,445 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:14:17,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7050d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17, skipping insertion in model container [2018-11-28 12:14:17,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:14:17,463 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:14:17,564 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:14:17,566 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:14:17,578 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:14:17,588 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:14:17,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17 WrapperNode [2018-11-28 12:14:17,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:14:17,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:14:17,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:14:17,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:14:17,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:14:17,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:14:17,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:14:17,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:14:17,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... [2018-11-28 12:14:17,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:14:17,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:14:17,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:14:17,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:14:17,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:14:17,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:14:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:14:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:14:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:14:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:14:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 12:14:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 12:14:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2018-11-28 12:14:17,687 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2018-11-28 12:14:17,817 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:14:17,817 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 12:14:17,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:14:17 BoogieIcfgContainer [2018-11-28 12:14:17,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:14:17,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:14:17,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:14:17,821 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:14:17,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:14:17" (1/3) ... [2018-11-28 12:14:17,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4962cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:14:17, skipping insertion in model container [2018-11-28 12:14:17,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:14:17" (2/3) ... [2018-11-28 12:14:17,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4962cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:14:17, skipping insertion in model container [2018-11-28 12:14:17,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:14:17" (3/3) ... [2018-11-28 12:14:17,824 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-28 12:14:17,830 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:14:17,836 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2018-11-28 12:14:17,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2018-11-28 12:14:17,872 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:14:17,873 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:14:17,873 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:14:17,873 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:14:17,873 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:14:17,874 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:14:17,874 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:14:17,874 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:14:17,874 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:14:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-11-28 12:14:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 12:14:17,892 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:17,893 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:17,894 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:17,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:17,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1670294891, now seen corresponding path program 1 times [2018-11-28 12:14:17,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:17,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:17,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:17,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:17,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,013 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 12:14:18,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:14:18,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:14:18,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:14:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:14:18,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:14:18,027 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2018-11-28 12:14:18,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:18,127 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2018-11-28 12:14:18,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:14:18,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-28 12:14:18,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:18,136 INFO L225 Difference]: With dead ends: 91 [2018-11-28 12:14:18,136 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 12:14:18,138 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 12:14:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 12:14:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2018-11-28 12:14:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 12:14:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-28 12:14:18,160 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 9 [2018-11-28 12:14:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:18,161 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-28 12:14:18,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:14:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-28 12:14:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:14:18,161 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:18,161 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:18,162 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:18,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:18,162 INFO L82 PathProgramCache]: Analyzing trace with hash -239527988, now seen corresponding path program 1 times [2018-11-28 12:14:18,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:18,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:18,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,195 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 12:14:18,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:14:18,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:14:18,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:14:18,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:14:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:14:18,197 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 5 states. [2018-11-28 12:14:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:18,271 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-11-28 12:14:18,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:14:18,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-28 12:14:18,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:18,273 INFO L225 Difference]: With dead ends: 45 [2018-11-28 12:14:18,273 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 12:14:18,274 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 12:14:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 12:14:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2018-11-28 12:14:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 12:14:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-28 12:14:18,277 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-11-28 12:14:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:18,278 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-28 12:14:18,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:14:18,278 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-28 12:14:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 12:14:18,279 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:18,279 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:18,280 INFO L423 AbstractCegarLoop]: === Iteration 3 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:18,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:18,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1831717912, now seen corresponding path program 1 times [2018-11-28 12:14:18,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:18,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:18,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,320 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 12:14:18,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:14:18,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:14:18,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:14:18,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:14:18,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:14:18,321 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2018-11-28 12:14:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:18,392 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-11-28 12:14:18,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:14:18,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-28 12:14:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:18,393 INFO L225 Difference]: With dead ends: 34 [2018-11-28 12:14:18,394 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 12:14:18,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:14:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 12:14:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-11-28 12:14:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 12:14:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-28 12:14:18,399 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2018-11-28 12:14:18,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:18,399 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-28 12:14:18,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:14:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-28 12:14:18,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 12:14:18,400 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:18,400 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:18,400 INFO L423 AbstractCegarLoop]: === Iteration 4 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:18,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:18,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1831718104, now seen corresponding path program 1 times [2018-11-28 12:14:18,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:18,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:18,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,432 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 12:14:18,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:14:18,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:14:18,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:14:18,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:14:18,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:14:18,433 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2018-11-28 12:14:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:18,478 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-28 12:14:18,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:14:18,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-28 12:14:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:18,479 INFO L225 Difference]: With dead ends: 33 [2018-11-28 12:14:18,479 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 12:14:18,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:14:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 12:14:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2018-11-28 12:14:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 12:14:18,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2018-11-28 12:14:18,483 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2018-11-28 12:14:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:18,483 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2018-11-28 12:14:18,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:14:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2018-11-28 12:14:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:14:18,484 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:18,484 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:18,484 INFO L423 AbstractCegarLoop]: === Iteration 5 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:18,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1250699491, now seen corresponding path program 1 times [2018-11-28 12:14:18,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:18,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:18,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:18,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:18,549 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:18,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 12:14:18,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:14:18,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2018-11-28 12:14:18,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:14:18,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:14:18,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:14:18,675 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 9 states. [2018-11-28 12:14:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:18,725 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-28 12:14:18,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:14:18,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-11-28 12:14:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:18,726 INFO L225 Difference]: With dead ends: 31 [2018-11-28 12:14:18,726 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 12:14:18,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:14:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 12:14:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-28 12:14:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 12:14:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-11-28 12:14:18,729 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2018-11-28 12:14:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:18,729 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-11-28 12:14:18,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:14:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-11-28 12:14:18,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:14:18,730 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:18,730 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:18,731 INFO L423 AbstractCegarLoop]: === Iteration 6 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:18,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1428194269, now seen corresponding path program 1 times [2018-11-28 12:14:18,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:18,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:18,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:18,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:18,771 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:18,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:18,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:18,842 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:14:18,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2018-11-28 12:14:18,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:14:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:14:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:14:18,843 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2018-11-28 12:14:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:18,970 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-11-28 12:14:18,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:14:18,975 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-11-28 12:14:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:18,975 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:14:18,975 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 12:14:18,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-11-28 12:14:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 12:14:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2018-11-28 12:14:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 12:14:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-28 12:14:18,982 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 17 [2018-11-28 12:14:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:18,982 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-28 12:14:18,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:14:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-28 12:14:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:14:18,983 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:18,983 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:18,983 INFO L423 AbstractCegarLoop]: === Iteration 7 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:18,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:18,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1428194461, now seen corresponding path program 1 times [2018-11-28 12:14:18,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:18,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:19,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:19,012 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:19,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:19,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:19,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:14:19,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2018-11-28 12:14:19,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:14:19,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:14:19,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:14:19,070 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 9 states. [2018-11-28 12:14:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:19,153 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-28 12:14:19,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:14:19,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-11-28 12:14:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:19,154 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:14:19,155 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 12:14:19,155 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:14:19,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 12:14:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-28 12:14:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 12:14:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-11-28 12:14:19,164 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2018-11-28 12:14:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:19,164 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-11-28 12:14:19,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:14:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-11-28 12:14:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 12:14:19,165 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:19,165 INFO L402 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:19,165 INFO L423 AbstractCegarLoop]: === Iteration 8 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:19,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash 518481683, now seen corresponding path program 1 times [2018-11-28 12:14:19,165 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:19,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:19,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:19,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:19,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 12:14:19,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:19,215 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:19,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:19,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 12:14:19,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:14:19,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-11-28 12:14:19,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:14:19,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:14:19,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:14:19,336 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 13 states. [2018-11-28 12:14:19,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:19,512 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2018-11-28 12:14:19,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:14:19,513 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-11-28 12:14:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:19,513 INFO L225 Difference]: With dead ends: 101 [2018-11-28 12:14:19,513 INFO L226 Difference]: Without dead ends: 76 [2018-11-28 12:14:19,514 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2018-11-28 12:14:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-28 12:14:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2018-11-28 12:14:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-28 12:14:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2018-11-28 12:14:19,520 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 25 [2018-11-28 12:14:19,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:19,521 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2018-11-28 12:14:19,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:14:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2018-11-28 12:14:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 12:14:19,521 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:19,522 INFO L402 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:19,522 INFO L423 AbstractCegarLoop]: === Iteration 9 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:19,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:19,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1145508093, now seen corresponding path program 2 times [2018-11-28 12:14:19,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:19,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:19,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:19,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:19,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-28 12:14:19,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:19,563 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:19,572 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:14:19,588 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:14:19,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:14:19,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:19,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:14:19,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 14 [2018-11-28 12:14:19,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 12:14:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 12:14:19,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:14:19,736 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 14 states. [2018-11-28 12:14:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:19,964 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2018-11-28 12:14:19,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 12:14:19,965 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2018-11-28 12:14:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:19,966 INFO L225 Difference]: With dead ends: 106 [2018-11-28 12:14:19,967 INFO L226 Difference]: Without dead ends: 86 [2018-11-28 12:14:19,967 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2018-11-28 12:14:19,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-28 12:14:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2018-11-28 12:14:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-28 12:14:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2018-11-28 12:14:19,976 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 33 [2018-11-28 12:14:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:19,976 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2018-11-28 12:14:19,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 12:14:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2018-11-28 12:14:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 12:14:19,977 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:19,977 INFO L402 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:19,978 INFO L423 AbstractCegarLoop]: === Iteration 10 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:19,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:19,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1145508285, now seen corresponding path program 1 times [2018-11-28 12:14:19,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:19,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:19,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:19,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:14:19,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-28 12:14:20,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:20,015 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:20,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:20,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:20,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:14:20,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9] total 12 [2018-11-28 12:14:20,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:14:20,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:14:20,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:14:20,157 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 13 states. [2018-11-28 12:14:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:20,331 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2018-11-28 12:14:20,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 12:14:20,332 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-11-28 12:14:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:20,332 INFO L225 Difference]: With dead ends: 99 [2018-11-28 12:14:20,332 INFO L226 Difference]: Without dead ends: 63 [2018-11-28 12:14:20,333 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2018-11-28 12:14:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-28 12:14:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2018-11-28 12:14:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 12:14:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2018-11-28 12:14:20,340 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 33 [2018-11-28 12:14:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:20,340 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2018-11-28 12:14:20,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:14:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2018-11-28 12:14:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 12:14:20,341 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:20,341 INFO L402 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:20,341 INFO L423 AbstractCegarLoop]: === Iteration 11 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:20,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:20,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1903926841, now seen corresponding path program 2 times [2018-11-28 12:14:20,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:20,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:20,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:20,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:14:20,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 47 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-11-28 12:14:20,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:20,373 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:20,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:14:20,395 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:14:20,395 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:14:20,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:14:20,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:14:20,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 15 [2018-11-28 12:14:20,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 12:14:20,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 12:14:20,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-11-28 12:14:20,542 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 16 states. [2018-11-28 12:14:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:21,025 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-11-28 12:14:21,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 12:14:21,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-11-28 12:14:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:21,026 INFO L225 Difference]: With dead ends: 72 [2018-11-28 12:14:21,026 INFO L226 Difference]: Without dead ends: 71 [2018-11-28 12:14:21,026 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2018-11-28 12:14:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-28 12:14:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2018-11-28 12:14:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-28 12:14:21,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-11-28 12:14:21,033 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 41 [2018-11-28 12:14:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:21,034 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-11-28 12:14:21,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 12:14:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-11-28 12:14:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 12:14:21,035 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:14:21,035 INFO L402 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:14:21,035 INFO L423 AbstractCegarLoop]: === Iteration 12 === [gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:14:21,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:14:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1770209325, now seen corresponding path program 3 times [2018-11-28 12:14:21,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:14:21,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:14:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:21,039 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:14:21,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:14:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:14:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-28 12:14:21,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:14:21,084 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/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 12:14:21,091 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:14:21,101 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 12:14:21,101 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:14:21,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:14:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 97 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-28 12:14:21,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:14:21,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-11-28 12:14:21,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 12:14:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 12:14:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:14:21,146 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 10 states. [2018-11-28 12:14:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:14:21,222 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2018-11-28 12:14:21,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:14:21,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-11-28 12:14:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:14:21,223 INFO L225 Difference]: With dead ends: 58 [2018-11-28 12:14:21,224 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:14:21,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2018-11-28 12:14:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:14:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:14:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:14:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:14:21,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2018-11-28 12:14:21,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:14:21,225 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:14:21,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 12:14:21,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:14:21,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:14:21,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 12:14:21,369 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 12:14:21,369 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:14:21,369 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:14:21,369 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 12:14:21,369 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:14:21,369 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 30 46) the Hoare annotation is: true [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 30 46) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L444 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (<= 63 main_~x~0) [2018-11-28 12:14:21,370 INFO L444 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (<= 63 main_~x~0) [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 30 46) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L444 ceAbstractionStarter]: At program point L41-1(line 41) the Hoare annotation is: (<= 63 main_~x~0) [2018-11-28 12:14:21,370 INFO L444 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (<= 63 main_~x~0) (<= 18 main_~y~0) (<= main_~x~0 63) (<= main_~y~0 18)) [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-28 12:14:21,370 INFO L448 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point gcd_testErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point gcd_testErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point gcd_testErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point gcd_testEXIT(lines 10 27) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-28 12:14:21,371 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point L13-3(lines 11 27) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point gcd_testErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point gcd_testErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 12) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L451 ceAbstractionStarter]: At program point gcd_testENTRY(lines 10 27) the Hoare annotation is: true [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point gcd_testErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L444 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (or (< |gcd_test_#in~b| 18) (< 63 |gcd_test_#in~a|) (< |gcd_test_#in~a| 63) (< 18 |gcd_test_#in~b|) (and (<= 0 gcd_test_~b) (<= 1 gcd_test_~a) (<= gcd_test_~a 2147483647) (<= gcd_test_~b 2147483646))) [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point L12-2(line 12) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point gcd_testErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-11-28 12:14:21,372 INFO L448 ceAbstractionStarter]: For program point L12-4(lines 11 27) no Hoare annotation was computed. [2018-11-28 12:14:21,373 INFO L448 ceAbstractionStarter]: For program point gcd_testFINAL(lines 10 27) no Hoare annotation was computed. [2018-11-28 12:14:21,373 INFO L448 ceAbstractionStarter]: For program point gcd_testErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-28 12:14:21,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:14:21 BoogieIcfgContainer [2018-11-28 12:14:21,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:14:21,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:14:21,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:14:21,389 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:14:21,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:14:17" (3/4) ... [2018-11-28 12:14:21,392 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:14:21,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:14:21,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:14:21,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-28 12:14:21,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd_test [2018-11-28 12:14:21,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-28 12:14:21,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 12:14:21,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:14:21,429 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(b) < 18 || 63 < \old(a)) || \old(a) < 63) || 18 < \old(b)) || (((0 <= b && 1 <= a) && a <= 2147483647) && b <= 2147483646) [2018-11-28 12:14:21,446 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4c249901-e40c-4919-be7a-582841eb0123/bin-2019/uautomizer/witness.graphml [2018-11-28 12:14:21,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:14:21,447 INFO L168 Benchmark]: Toolchain (without parser) took 4005.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -90.0 MB). Peak memory consumption was 74.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:14:21,448 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:14:21,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.07 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 12:14:21,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.56 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:14:21,449 INFO L168 Benchmark]: Boogie Preprocessor took 14.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:14:21,449 INFO L168 Benchmark]: RCFGBuilder took 200.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:14:21,450 INFO L168 Benchmark]: TraceAbstraction took 3570.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.4 MB). Peak memory consumption was 99.8 MB. Max. memory is 11.5 GB. [2018-11-28 12:14:21,450 INFO L168 Benchmark]: Witness Printer took 57.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 11.5 GB. [2018-11-28 12:14:21,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.07 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.56 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -165.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3570.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 40.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.4 MB). Peak memory consumption was 99.8 MB. Max. memory is 11.5 GB. * Witness Printer took 57.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 12]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((\old(b) < 18 || 63 < \old(a)) || \old(a) < 63) || 18 < \old(b)) || (((0 <= b && 1 <= a) && a <= 2147483647) && b <= 2147483646) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 8 error locations. SAFE Result, 3.5s OverallTime, 12 OverallIterations, 12 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 113 SDtfs, 711 SDslu, 451 SDs, 0 SdLazy, 1114 SolverSat, 187 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=9, 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: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 106 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 31 NumberOfFragments, 58 HoareAnnotationTreeSize, 16 FomulaSimplifications, 4245 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 637 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 525 NumberOfCodeBlocks, 489 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 505 ConstructedInterpolants, 28 QuantifiedInterpolants, 72635 SizeOfPredicates, 21 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 562/748 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...