./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/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 ad183272c46520d125e7fadb8bd25966ebd670c1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:02:26,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:02:26,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:02:26,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:02:26,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:02:26,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:02:26,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:02:26,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:02:26,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:02:26,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:02:26,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:02:26,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:02:26,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:02:26,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:02:26,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:02:26,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:02:26,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:02:26,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:02:26,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:02:26,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:02:26,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:02:26,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:02:26,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:02:26,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:02:26,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:02:26,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:02:26,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:02:26,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:02:26,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:02:26,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:02:26,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:02:26,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:02:26,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:02:26,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:02:26,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:02:26,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:02:26,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:02:26,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:02:26,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:02:26,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:02:26,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:02:26,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-29 20:02:26,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:02:26,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:02:26,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:02:26,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:02:26,852 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:02:26,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:02:26,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:02:26,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:02:26,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:02:26,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:02:26,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:02:26,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:02:26,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:02:26,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:02:26,855 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:02:26,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:02:26,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:02:26,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:02:26,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:02:26,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:02:26,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:02:26,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:02:26,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:02:26,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:02:26,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:02:26,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:02:26,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:02:26,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:02:26,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:02:26,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:02:26,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:02:26,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad183272c46520d125e7fadb8bd25966ebd670c1 [2020-11-29 20:02:27,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:02:27,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:02:27,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:02:27,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:02:27,173 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:02:27,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/../../sv-benchmarks/c/recursive/gcd02.c [2020-11-29 20:02:27,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/data/35a9bf7ae/59cdc016675d4dacbfadaa943fab2d66/FLAG7ef777ba7 [2020-11-29 20:02:27,790 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:02:27,791 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/sv-benchmarks/c/recursive/gcd02.c [2020-11-29 20:02:27,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/data/35a9bf7ae/59cdc016675d4dacbfadaa943fab2d66/FLAG7ef777ba7 [2020-11-29 20:02:28,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/data/35a9bf7ae/59cdc016675d4dacbfadaa943fab2d66 [2020-11-29 20:02:28,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:02:28,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:02:28,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:02:28,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:02:28,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:02:28,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e6e31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28, skipping insertion in model container [2020-11-29 20:02:28,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:02:28,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:02:28,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:02:28,441 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:02:28,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:02:28,485 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:02:28,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28 WrapperNode [2020-11-29 20:02:28,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:02:28,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:02:28,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:02:28,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:02:28,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:02:28,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:02:28,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:02:28,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:02:28,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... [2020-11-29 20:02:28,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:02:28,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:02:28,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:02:28,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:02:28,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/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 [2020-11-29 20:02:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-29 20:02:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-29 20:02:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:02:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:02:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2020-11-29 20:02:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2020-11-29 20:02:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:02:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:02:29,034 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:02:29,035 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 20:02:29,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:29 BoogieIcfgContainer [2020-11-29 20:02:29,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:02:29,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:02:29,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:02:29,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:02:29,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:02:28" (1/3) ... [2020-11-29 20:02:29,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2191b011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:02:29, skipping insertion in model container [2020-11-29 20:02:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:02:28" (2/3) ... [2020-11-29 20:02:29,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2191b011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:02:29, skipping insertion in model container [2020-11-29 20:02:29,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:29" (3/3) ... [2020-11-29 20:02:29,046 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2020-11-29 20:02:29,056 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:02:29,061 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:02:29,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:02:29,102 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:02:29,102 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:02:29,103 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:02:29,103 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:02:29,103 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:02:29,103 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:02:29,104 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:02:29,104 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:02:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-11-29 20:02:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:02:29,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:29,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:29,134 INFO L429 AbstractCegarLoop]: === Iteration 1 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:29,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2044382580, now seen corresponding path program 1 times [2020-11-29 20:02:29,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:29,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873603704] [2020-11-29 20:02:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:29,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:29,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873603704] [2020-11-29 20:02:29,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:29,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:02:29,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025320958] [2020-11-29 20:02:29,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:02:29,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:29,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:02:29,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:02:29,476 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 6 states. [2020-11-29 20:02:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:29,659 INFO L93 Difference]: Finished difference Result 82 states and 105 transitions. [2020-11-29 20:02:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:02:29,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 20:02:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:29,668 INFO L225 Difference]: With dead ends: 82 [2020-11-29 20:02:29,669 INFO L226 Difference]: Without dead ends: 32 [2020-11-29 20:02:29,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:02:29,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-29 20:02:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-29 20:02:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 20:02:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-29 20:02:29,718 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 11 [2020-11-29 20:02:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:29,727 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-29 20:02:29,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:02:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-29 20:02:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:02:29,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:29,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:29,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:02:29,730 INFO L429 AbstractCegarLoop]: === Iteration 2 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2044382804, now seen corresponding path program 1 times [2020-11-29 20:02:29,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:29,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639226437] [2020-11-29 20:02:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:29,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639226437] [2020-11-29 20:02:29,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:29,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:02:29,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393319005] [2020-11-29 20:02:29,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:02:29,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:29,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:02:29,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:02:29,812 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2020-11-29 20:02:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:29,954 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-11-29 20:02:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:02:29,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 20:02:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:29,956 INFO L225 Difference]: With dead ends: 32 [2020-11-29 20:02:29,956 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 20:02:29,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:02:29,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 20:02:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-29 20:02:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 20:02:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-11-29 20:02:29,965 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2020-11-29 20:02:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:29,965 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-11-29 20:02:29,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:02:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-11-29 20:02:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:02:29,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:29,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:29,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:02:29,967 INFO L429 AbstractCegarLoop]: === Iteration 3 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1535750884, now seen corresponding path program 1 times [2020-11-29 20:02:29,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:29,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568559128] [2020-11-29 20:02:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:02:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:30,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568559128] [2020-11-29 20:02:30,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:30,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 20:02:30,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002522134] [2020-11-29 20:02:30,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:02:30,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:30,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:02:30,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:02:30,144 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-11-29 20:02:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:30,384 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-11-29 20:02:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:02:30,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-29 20:02:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:30,389 INFO L225 Difference]: With dead ends: 42 [2020-11-29 20:02:30,390 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 20:02:30,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:02:30,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 20:02:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-11-29 20:02:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 20:02:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-11-29 20:02:30,412 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2020-11-29 20:02:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:30,412 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-11-29 20:02:30,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:02:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-11-29 20:02:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:02:30,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:30,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:30,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:02:30,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:30,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:30,415 INFO L82 PathProgramCache]: Analyzing trace with hash -363637106, now seen corresponding path program 1 times [2020-11-29 20:02:30,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:30,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238787002] [2020-11-29 20:02:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:02:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:30,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238787002] [2020-11-29 20:02:30,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:30,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:02:30,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961413656] [2020-11-29 20:02:30,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:02:30,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:30,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:02:30,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:02:30,488 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2020-11-29 20:02:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:30,501 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-29 20:02:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:02:30,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-29 20:02:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:30,504 INFO L225 Difference]: With dead ends: 38 [2020-11-29 20:02:30,504 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:02:30,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:02:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:02:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 20:02:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:02:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-11-29 20:02:30,532 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 18 [2020-11-29 20:02:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:30,532 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-11-29 20:02:30,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:02:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-11-29 20:02:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 20:02:30,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:30,534 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:30,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:02:30,535 INFO L429 AbstractCegarLoop]: === Iteration 5 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1256790441, now seen corresponding path program 1 times [2020-11-29 20:02:30,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:30,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423798683] [2020-11-29 20:02:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:02:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:30,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423798683] [2020-11-29 20:02:30,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631194401] [2020-11-29 20:02:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:02:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:30,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:02:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:02:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:02:31,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:02:31,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2020-11-29 20:02:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46679044] [2020-11-29 20:02:31,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:02:31,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:02:31,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-11-29 20:02:31,190 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 11 states. [2020-11-29 20:02:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:31,448 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-11-29 20:02:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:02:31,449 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-11-29 20:02:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:31,451 INFO L225 Difference]: With dead ends: 46 [2020-11-29 20:02:31,451 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 20:02:31,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2020-11-29 20:02:31,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 20:02:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 20:02:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:02:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-29 20:02:31,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2020-11-29 20:02:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:31,460 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-29 20:02:31,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:02:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-29 20:02:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:02:31,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:31,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:31,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:02:31,670 INFO L429 AbstractCegarLoop]: === Iteration 6 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:31,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1044761755, now seen corresponding path program 1 times [2020-11-29 20:02:31,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:31,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807506975] [2020-11-29 20:02:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:02:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:02:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:02:31,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807506975] [2020-11-29 20:02:31,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968099893] [2020-11-29 20:02:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:02:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:31,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 20:02:31,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:02:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-29 20:02:32,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:02:32,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2020-11-29 20:02:32,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778729641] [2020-11-29 20:02:32,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:02:32,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:32,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:02:32,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-11-29 20:02:32,227 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 10 states. [2020-11-29 20:02:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:32,424 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-11-29 20:02:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:02:32,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-11-29 20:02:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:32,427 INFO L225 Difference]: With dead ends: 43 [2020-11-29 20:02:32,427 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 20:02:32,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-11-29 20:02:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 20:02:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-11-29 20:02:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 20:02:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-11-29 20:02:32,439 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2020-11-29 20:02:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:32,440 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-11-29 20:02:32,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:02:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-11-29 20:02:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:02:32,449 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:32,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:32,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:02:32,670 INFO L429 AbstractCegarLoop]: === Iteration 7 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:32,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1475486117, now seen corresponding path program 1 times [2020-11-29 20:02:32,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:32,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135953118] [2020-11-29 20:02:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:02:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:02:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 20:02:32,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135953118] [2020-11-29 20:02:32,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:02:32,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:02:32,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541420930] [2020-11-29 20:02:32,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:02:32,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:32,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:02:32,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:02:32,781 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 9 states. [2020-11-29 20:02:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:32,970 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2020-11-29 20:02:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:02:32,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-11-29 20:02:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:32,972 INFO L225 Difference]: With dead ends: 46 [2020-11-29 20:02:32,972 INFO L226 Difference]: Without dead ends: 45 [2020-11-29 20:02:32,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:02:32,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-29 20:02:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-11-29 20:02:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 20:02:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-11-29 20:02:32,980 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 27 [2020-11-29 20:02:32,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:32,981 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-11-29 20:02:32,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:02:32,981 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-11-29 20:02:32,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 20:02:32,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:02:32,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:02:32,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:02:32,983 INFO L429 AbstractCegarLoop]: === Iteration 8 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:02:32,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:02:32,983 INFO L82 PathProgramCache]: Analyzing trace with hash -689864900, now seen corresponding path program 1 times [2020-11-29 20:02:32,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:02:32,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323772591] [2020-11-29 20:02:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:02:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-11-29 20:02:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:02:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 20:02:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 20:02:33,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323772591] [2020-11-29 20:02:33,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131532313] [2020-11-29 20:02:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:02:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:02:33,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:02:33,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:02:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 20:02:33,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:02:33,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2020-11-29 20:02:33,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739961888] [2020-11-29 20:02:33,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:02:33,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:02:33,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:02:33,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-11-29 20:02:33,647 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 11 states. [2020-11-29 20:02:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:02:33,888 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-11-29 20:02:33,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:02:33,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-11-29 20:02:33,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:02:33,889 INFO L225 Difference]: With dead ends: 43 [2020-11-29 20:02:33,889 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:02:33,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2020-11-29 20:02:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:02:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:02:33,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:02:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:02:33,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-11-29 20:02:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:02:33,892 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:02:33,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:02:33,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:02:33,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:02:34,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:02:34,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:02:34,453 INFO L274 CegarLoopResult]: For program point L33(lines 33 35) no Hoare annotation was computed. [2020-11-29 20:02:34,453 INFO L274 CegarLoopResult]: For program point dividesFINAL(lines 32 40) no Hoare annotation was computed. [2020-11-29 20:02:34,454 INFO L274 CegarLoopResult]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2020-11-29 20:02:34,454 INFO L274 CegarLoopResult]: For program point dividesEXIT(lines 32 40) no Hoare annotation was computed. [2020-11-29 20:02:34,454 INFO L274 CegarLoopResult]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 39) no Hoare annotation was computed. [2020-11-29 20:02:34,454 INFO L274 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-11-29 20:02:34,454 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-11-29 20:02:34,455 INFO L270 CegarLoopResult]: At program point L39-2(line 39) the Hoare annotation is: (let ((.cse0 (not (< 0 |divides_#in~n|)))) (and (or (not (< |divides_#in~m| 2147483647)) .cse0 (< divides_~m 2147483647)) (or (not (<= |divides_#in~m| 2147483647)) .cse0 (and (<= divides_~n divides_~m) (< 0 divides_~n) (<= divides_~m 2147483647))))) [2020-11-29 20:02:34,455 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-11-29 20:02:34,455 INFO L274 CegarLoopResult]: For program point L39-3(line 39) no Hoare annotation was computed. [2020-11-29 20:02:34,455 INFO L277 CegarLoopResult]: At program point dividesENTRY(lines 32 40) the Hoare annotation is: true [2020-11-29 20:02:34,456 INFO L274 CegarLoopResult]: For program point gcdEXIT(lines 17 29) no Hoare annotation was computed. [2020-11-29 20:02:34,456 INFO L274 CegarLoopResult]: For program point L25(lines 25 27) no Hoare annotation was computed. [2020-11-29 20:02:34,456 INFO L274 CegarLoopResult]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-29 20:02:34,456 INFO L274 CegarLoopResult]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-29 20:02:34,456 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 20:02:34,456 INFO L274 CegarLoopResult]: For program point gcdFINAL(lines 17 29) no Hoare annotation was computed. [2020-11-29 20:02:34,457 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-29 20:02:34,457 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-11-29 20:02:34,457 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-29 20:02:34,465 INFO L270 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y1 (+ gcd_~y2 2147483646)) (< 0 gcd_~y1) (<= gcd_~y2 2147483647) (= gcd_~y1 |gcd_#in~y1|))) [2020-11-29 20:02:34,465 INFO L274 CegarLoopResult]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-29 20:02:34,465 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-29 20:02:34,465 INFO L274 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-11-29 20:02:34,466 INFO L270 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (not (<= |gcd_#in~y2| 2147483647)) (and (<= gcd_~y1 (+ gcd_~y2 2147483646)) (< 0 gcd_~y1) (<= gcd_~y2 2147483647) (= gcd_~y1 |gcd_#in~y1|))) [2020-11-29 20:02:34,466 INFO L277 CegarLoopResult]: At program point gcdENTRY(lines 17 29) the Hoare annotation is: true [2020-11-29 20:02:34,466 INFO L274 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-11-29 20:02:34,466 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-11-29 20:02:34,466 INFO L274 CegarLoopResult]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-11-29 20:02:34,466 INFO L274 CegarLoopResult]: For program point L18(lines 18 21) no Hoare annotation was computed. [2020-11-29 20:02:34,467 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 29) no Hoare annotation was computed. [2020-11-29 20:02:34,467 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:02:34,467 INFO L274 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-11-29 20:02:34,467 INFO L270 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-29 20:02:34,467 INFO L274 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-11-29 20:02:34,467 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-11-29 20:02:34,467 INFO L274 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-11-29 20:02:34,468 INFO L270 CegarLoopResult]: At program point L42(lines 42 59) the Hoare annotation is: (<= ULTIMATE.start_main_~m~0 2147483647) [2020-11-29 20:02:34,468 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 20:02:34,468 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:02:34,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:02:34,468 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:02:34,468 INFO L270 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (< 0 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~n~0 2147483647)) [2020-11-29 20:02:34,468 INFO L274 CegarLoopResult]: For program point L53-1(line 53) no Hoare annotation was computed. [2020-11-29 20:02:34,469 INFO L274 CegarLoopResult]: For program point L51(lines 51 58) no Hoare annotation was computed. [2020-11-29 20:02:34,469 INFO L274 CegarLoopResult]: For program point L53-2(lines 53 57) no Hoare annotation was computed. [2020-11-29 20:02:34,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:02:34 BoogieIcfgContainer [2020-11-29 20:02:34,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:02:34,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:02:34,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:02:34,486 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:02:34,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:02:29" (3/4) ... [2020-11-29 20:02:34,490 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:02:34,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2020-11-29 20:02:34,497 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-11-29 20:02:34,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 20:02:34,503 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 20:02:34,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:02:34,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:02:34,554 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6f90b4d0-77df-41f6-8e6e-08bdabe4e109/bin/uautomizer/witness.graphml [2020-11-29 20:02:34,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:02:34,556 INFO L168 Benchmark]: Toolchain (without parser) took 6387.08 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 82.1 MB in the beginning and 54.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:02:34,556 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:02:34,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.03 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 88.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:02:34,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.80 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 87.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:02:34,558 INFO L168 Benchmark]: Boogie Preprocessor took 24.99 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.5 MB in the end (delta: 705.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:02:34,558 INFO L168 Benchmark]: RCFGBuilder took 460.41 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 69.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:02:34,559 INFO L168 Benchmark]: TraceAbstraction took 5446.51 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 69.2 MB in the beginning and 57.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:02:34,560 INFO L168 Benchmark]: Witness Printer took 68.03 ms. Allocated memory is still 134.2 MB. Free memory was 57.5 MB in the beginning and 54.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:02:34,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.03 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 88.7 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.80 ms. Allocated memory is still 111.1 MB. Free memory was 88.7 MB in the beginning and 87.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.99 ms. Allocated memory is still 111.1 MB. Free memory was 87.2 MB in the beginning and 86.5 MB in the end (delta: 705.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 460.41 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 69.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5446.51 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 69.2 MB in the beginning and 57.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * Witness Printer took 68.03 ms. Allocated memory is still 134.2 MB. Free memory was 57.5 MB in the beginning and 54.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 39]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: m <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 46 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 157 SDtfs, 185 SDslu, 587 SDs, 0 SdLazy, 877 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 38 PreInvPairs, 47 NumberOfFragments, 102 HoareAnnotationTreeSize, 38 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 22645 SizeOfPredicates, 11 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 43/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...