./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da856cb29218eae000c82400da3ef1c667e9f55c ..................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:22,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:22,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:22,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:22,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:22,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:22,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:22,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:22,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:22,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:22,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:22,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:22,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:22,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:22,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:22,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:22,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:22,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:22,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:22,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:22,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:22,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:22,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:22,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:22,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:22,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:22,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:22,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:22,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:22,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:22,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:22,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:22,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:22,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:22,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:22,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:22,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:22,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:22,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:22,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:22,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:22,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:22,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:22,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:22,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:22,975 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:22,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:22,976 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:22,977 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:22,977 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:22,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:22,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:22,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:22,979 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:22,979 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:22,980 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:22,980 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:22,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:22,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:22,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:22,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:22,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:22,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:22,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:22,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:22,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:22,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:22,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:22,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:22,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:22,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:22,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:22,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:22,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:22,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:22,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:22,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:22,988 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:22,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:22,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:22,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:22,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:22,989 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-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da856cb29218eae000c82400da3ef1c667e9f55c [2020-11-22 13:05:23,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:23,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:23,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:23,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:23,310 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:23,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2020-11-22 13:05:23,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/data/8d0b37911/4353aa548f6243989da0605dbf7e7f0c/FLAGec952dfc2 [2020-11-22 13:05:24,028 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:24,029 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/sv-benchmarks/c/list-properties/alternating_list-2.i [2020-11-22 13:05:24,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/data/8d0b37911/4353aa548f6243989da0605dbf7e7f0c/FLAGec952dfc2 [2020-11-22 13:05:24,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/data/8d0b37911/4353aa548f6243989da0605dbf7e7f0c [2020-11-22 13:05:24,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:24,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:24,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:24,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:24,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:24,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:24,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cff7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24, skipping insertion in model container [2020-11-22 13:05:24,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:24,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:24,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:24,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:24,843 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:24,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:24,970 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:24,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24 WrapperNode [2020-11-22 13:05:24,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:24,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:24,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:24,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:24,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:25,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:25,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:25,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:25,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... [2020-11-22 13:05:25,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:25,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:25,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:25,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:25,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:05:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:05:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:05:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:05:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:25,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:05:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:05:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:25,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:25,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:25,772 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:25,772 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-22 13:05:25,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:25 BoogieIcfgContainer [2020-11-22 13:05:25,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:25,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:25,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:25,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:25,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:24" (1/3) ... [2020-11-22 13:05:25,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5777ed6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:25, skipping insertion in model container [2020-11-22 13:05:25,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:24" (2/3) ... [2020-11-22 13:05:25,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5777ed6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:25, skipping insertion in model container [2020-11-22 13:05:25,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:25" (3/3) ... [2020-11-22 13:05:25,782 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2020-11-22 13:05:25,793 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:25,798 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:25,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:25,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:25,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:25,833 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:25,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:25,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:25,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:25,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:25,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:25,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-22 13:05:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:05:25,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:25,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:25,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:25,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1290093655, now seen corresponding path program 1 times [2020-11-22 13:05:25,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:25,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344998831] [2020-11-22 13:05:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:26,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344998831] [2020-11-22 13:05:26,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:26,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:26,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374876870] [2020-11-22 13:05:26,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:26,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:26,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:26,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:26,035 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-11-22 13:05:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:26,051 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-11-22 13:05:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:26,053 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-22 13:05:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:26,060 INFO L225 Difference]: With dead ends: 42 [2020-11-22 13:05:26,061 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:05:26,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:05:26,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:05:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:05:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-22 13:05:26,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-11-22 13:05:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:26,094 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-22 13:05:26,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-22 13:05:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:05:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:26,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:26,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:26,095 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1930683055, now seen corresponding path program 1 times [2020-11-22 13:05:26,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:26,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975134263] [2020-11-22 13:05:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:26,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975134263] [2020-11-22 13:05:26,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:26,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-22 13:05:26,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203687216] [2020-11-22 13:05:26,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:26,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:26,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:26,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:26,200 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2020-11-22 13:05:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:26,327 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-11-22 13:05:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:26,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-22 13:05:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:26,328 INFO L225 Difference]: With dead ends: 42 [2020-11-22 13:05:26,329 INFO L226 Difference]: Without dead ends: 29 [2020-11-22 13:05:26,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-22 13:05:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2020-11-22 13:05:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-22 13:05:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-22 13:05:26,334 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-11-22 13:05:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:26,334 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-22 13:05:26,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-22 13:05:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:05:26,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:26,335 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:26,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:26,336 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:26,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1713673583, now seen corresponding path program 1 times [2020-11-22 13:05:26,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:26,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863160430] [2020-11-22 13:05:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:26,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:05:26,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:05:26,523 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:05:26,523 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:05:26,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:26,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:26 BoogieIcfgContainer [2020-11-22 13:05:26,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:26,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:26,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:26,572 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:26,572 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:25" (3/4) ... [2020-11-22 13:05:26,574 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:05:26,614 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4dad1c04-d7a7-4d5d-964c-96db4e8f5e84/bin/utaipan/witness.graphml [2020-11-22 13:05:26,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:26,616 INFO L168 Benchmark]: Toolchain (without parser) took 2327.51 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 64.0 MB in the beginning and 97.5 MB in the end (delta: -33.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:26,616 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:26,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.39 ms. Allocated memory is still 94.4 MB. Free memory was 63.7 MB in the beginning and 59.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:26,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.95 ms. Allocated memory is still 94.4 MB. Free memory was 59.7 MB in the beginning and 57.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:26,618 INFO L168 Benchmark]: Boogie Preprocessor took 46.92 ms. Allocated memory is still 94.4 MB. Free memory was 57.9 MB in the beginning and 56.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:26,619 INFO L168 Benchmark]: RCFGBuilder took 678.84 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 56.6 MB in the beginning and 96.7 MB in the end (delta: -40.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:26,619 INFO L168 Benchmark]: TraceAbstraction took 794.81 ms. Allocated memory is still 127.9 MB. Free memory was 96.1 MB in the beginning and 100.4 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:26,620 INFO L168 Benchmark]: Witness Printer took 42.60 ms. Allocated memory is still 127.9 MB. Free memory was 100.4 MB in the beginning and 97.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:26,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 677.39 ms. Allocated memory is still 94.4 MB. Free memory was 63.7 MB in the beginning and 59.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.95 ms. Allocated memory is still 94.4 MB. Free memory was 59.7 MB in the beginning and 57.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.92 ms. Allocated memory is still 94.4 MB. Free memory was 57.9 MB in the beginning and 56.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 678.84 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 56.6 MB in the beginning and 96.7 MB in the end (delta: -40.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 794.81 ms. Allocated memory is still 127.9 MB. Free memory was 96.1 MB in the beginning and 100.4 MB in the end (delta: -4.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 42.60 ms. Allocated memory is still 127.9 MB. Free memory was 100.4 MB in the beginning and 97.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List p = a; [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 2 [L540] flag = 0 [L545] t = (List) malloc(sizeof(struct node)) [L546] COND FALSE !(t == 0) [L547] p->n = t [L548] EXPR p->n [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 [L551] p = a [L552] flag = 1 [L553] EXPR p->h [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 [L556] EXPR p->h [L556] COND TRUE p->h != 1 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "alternating_list-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 14 SDslu, 30 SDs, 0 SdLazy, 32 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 2 MinimizatonAttempts, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! Received shutdown request...