./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f9de9875f09e594325a645528f016ce12ac5c646 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:32,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:32,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:32,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:32,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:32,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:32,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:32,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:32,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:32,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:32,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:32,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:32,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:32,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:32,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:32,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:32,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:32,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:32,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:32,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:32,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:32,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:32,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:32,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:32,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:32,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:32,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:32,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:32,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:32,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:32,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:32,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:32,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:32,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:32,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:32,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:32,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:32,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:32,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:32,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:32,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:32,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:27:32,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:32,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:32,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:32,253 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:32,253 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:32,253 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:32,253 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:32,253 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:32,254 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:32,254 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:32,254 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:32,254 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:32,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:32,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:32,255 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:32,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:32,256 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:27:32,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:32,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:32,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:32,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:32,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:32,257 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:27:32,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:32,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:32,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:32,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:32,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:32,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:32,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:32,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:32,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:32,259 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:32,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:32,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:32,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:32,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:32,259 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9de9875f09e594325a645528f016ce12ac5c646 [2021-10-11 02:27:32,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:32,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:32,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:32,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:32,537 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:32,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a.c [2021-10-11 02:27:32,603 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/data/486d30f24/61ae96da6a174d75aae0e57438455418/FLAG9ab89ee6d [2021-10-11 02:27:33,131 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:33,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a.c [2021-10-11 02:27:33,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/data/486d30f24/61ae96da6a174d75aae0e57438455418/FLAG9ab89ee6d [2021-10-11 02:27:33,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/data/486d30f24/61ae96da6a174d75aae0e57438455418 [2021-10-11 02:27:33,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:33,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:33,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:33,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:33,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:33,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15eda9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33, skipping insertion in model container [2021-10-11 02:27:33,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:33,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:33,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:33,760 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:33,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:33,784 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:33,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33 WrapperNode [2021-10-11 02:27:33,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:33,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:33,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:33,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:33,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:33,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:33,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:33,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:33,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:33,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:33,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:33,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:33,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:34,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:34,115 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:27:34,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:34 BoogieIcfgContainer [2021-10-11 02:27:34,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:34,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:34,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:34,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:34,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:33" (1/3) ... [2021-10-11 02:27:34,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435a068e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:34, skipping insertion in model container [2021-10-11 02:27:34,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33" (2/3) ... [2021-10-11 02:27:34,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435a068e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:34, skipping insertion in model container [2021-10-11 02:27:34,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:34" (3/3) ... [2021-10-11 02:27:34,126 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7a.c [2021-10-11 02:27:34,142 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:34,145 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:27:34,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:27:34,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:34,190 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:34,190 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:34,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:34,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:34,190 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:34,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:34,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:27:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:27:34,207 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:27:34,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,214 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-11 02:27:34,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959694227] [2021-10-11 02:27:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:34,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959694227] [2021-10-11 02:27:34,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:34,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:34,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42987430] [2021-10-11 02:27:34,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:34,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:34,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,389 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2021-10-11 02:27:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:34,415 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-11 02:27:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:34,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:27:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:34,425 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:27:34,425 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:27:34,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:27:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:27:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:27:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-11 02:27:34,457 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2021-10-11 02:27:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:34,473 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-11 02:27:34,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-11 02:27:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:27:34,474 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:27:34,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:34,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-11 02:27:34,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162022807] [2021-10-11 02:27:34,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:34,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162022807] [2021-10-11 02:27:34,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:34,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:34,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440888586] [2021-10-11 02:27:34,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:34,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:34,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:34,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,506 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2021-10-11 02:27:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:34,518 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-11 02:27:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:34,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:27:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:34,520 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:27:34,520 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:27:34,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:27:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:27:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:27:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 02:27:34,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2021-10-11 02:27:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:34,542 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 02:27:34,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-11 02:27:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:34,543 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:34,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:34,544 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,545 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-11 02:27:34,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150717094] [2021-10-11 02:27:34,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:34,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150717094] [2021-10-11 02:27:34,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:34,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:34,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921999294] [2021-10-11 02:27:34,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:34,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:34,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,609 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2021-10-11 02:27:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:34,620 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-11 02:27:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:34,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:34,635 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:27:34,635 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:27:34,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:27:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 02:27:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 02:27:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-11 02:27:34,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-10-11 02:27:34,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:34,641 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-11 02:27:34,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:34,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-11 02:27:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:34,641 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:34,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:34,642 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-11 02:27:34,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747417503] [2021-10-11 02:27:34,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:34,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747417503] [2021-10-11 02:27:34,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:34,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:34,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039225639] [2021-10-11 02:27:34,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:34,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,674 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2021-10-11 02:27:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:34,685 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-11 02:27:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:34,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:34,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:34,687 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:27:34,687 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:27:34,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:27:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:27:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:27:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 02:27:34,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-10-11 02:27:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:34,692 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 02:27:34,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-11 02:27:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:34,692 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:34,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:34,693 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,694 INFO L82 PathProgramCache]: Analyzing trace with hash 925954989, now seen corresponding path program 1 times [2021-10-11 02:27:34,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125629340] [2021-10-11 02:27:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:34,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125629340] [2021-10-11 02:27:34,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:34,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:27:34,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187720942] [2021-10-11 02:27:34,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:34,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:34,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:34,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,763 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2021-10-11 02:27:34,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:34,788 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-11 02:27:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:34,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:27:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:34,792 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:27:34,792 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:27:34,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:27:34,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:27:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:27:34,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-11 02:27:34,795 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-10-11 02:27:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:34,796 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-11 02:27:34,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-11 02:27:34,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:34,796 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:34,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:34,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:27:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166356, now seen corresponding path program 1 times [2021-10-11 02:27:34,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420412003] [2021-10-11 02:27:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:34,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420412003] [2021-10-11 02:27:34,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:34,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:34,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103772174] [2021-10-11 02:27:34,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:34,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:34,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:34,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,859 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2021-10-11 02:27:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:34,870 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-11 02:27:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:34,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:27:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:34,871 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:27:34,871 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:34,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:34,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-11 02:27:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:34,873 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:34,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:34,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:34,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:27:34,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:34,912 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 02:27:34,912 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:34,913 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-11 02:27:34,913 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2021-10-11 02:27:34,913 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2021-10-11 02:27:34,913 INFO L262 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-10-11 02:27:34,913 INFO L262 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2021-10-11 02:27:34,914 INFO L258 CegarLoopResult]: At program point L21-2(lines 20 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= ULTIMATE.start_main_~d~0 2147483647) (<= ULTIMATE.start_main_~y~0 2147483647)) [2021-10-11 02:27:34,914 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-11 02:27:34,914 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-11 02:27:34,914 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:34,914 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2021-10-11 02:27:34,914 INFO L262 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-11 02:27:34,915 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-11 02:27:34,915 INFO L262 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-11 02:27:34,915 INFO L262 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-11 02:27:34,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:34 BoogieIcfgContainer [2021-10-11 02:27:34,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:34,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:34,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:34,943 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:34,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:34" (3/4) ... [2021-10-11 02:27:34,947 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:34,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:27:34,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:27:34,966 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:35,003 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d84b8861-ba93-4afb-8684-39e3fc924401/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:35,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:35,005 INFO L168 Benchmark]: Toolchain (without parser) took 1465.08 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 71.1 MB in the beginning and 83.5 MB in the end (delta: -12.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:35,005 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory was 62.0 MB in the beginning and 61.9 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:35,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.43 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 71.0 MB in the beginning and 101.0 MB in the end (delta: -30.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:35,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.46 ms. Allocated memory is still 123.7 MB. Free memory was 101.0 MB in the beginning and 99.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:35,007 INFO L168 Benchmark]: Boogie Preprocessor took 17.56 ms. Allocated memory is still 123.7 MB. Free memory was 99.8 MB in the beginning and 98.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:35,008 INFO L168 Benchmark]: RCFGBuilder took 287.79 ms. Allocated memory is still 123.7 MB. Free memory was 98.6 MB in the beginning and 87.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:35,008 INFO L168 Benchmark]: TraceAbstraction took 814.29 ms. Allocated memory is still 123.7 MB. Free memory was 86.4 MB in the beginning and 86.2 MB in the end (delta: 215.1 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:35,009 INFO L168 Benchmark]: Witness Printer took 60.82 ms. Allocated memory is still 123.7 MB. Free memory was 86.2 MB in the beginning and 83.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:35,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 100.7 MB. Free memory was 62.0 MB in the beginning and 61.9 MB in the end (delta: 117.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.43 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 71.0 MB in the beginning and 101.0 MB in the end (delta: -30.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.46 ms. Allocated memory is still 123.7 MB. Free memory was 101.0 MB in the beginning and 99.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.56 ms. Allocated memory is still 123.7 MB. Free memory was 99.8 MB in the beginning and 98.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.79 ms. Allocated memory is still 123.7 MB. Free memory was 98.6 MB in the beginning and 87.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 814.29 ms. Allocated memory is still 123.7 MB. Free memory was 86.4 MB in the beginning and 86.2 MB in the end (delta: 215.1 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.82 ms. Allocated memory is still 123.7 MB. Free memory was 86.2 MB in the beginning and 83.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 22]: 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: 20]: Loop Invariant Derived loop invariant: (x <= 2147483647 && d <= 2147483647) && y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 31 SDslu, 10 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 10 HoareAnnotationTreeSize, 1 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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...