./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE --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 32bit --witnessprinter.graph.data.programhash 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:57:24,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:57:24,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:57:24,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:57:24,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:57:24,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:57:24,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:57:24,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:57:24,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:57:24,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:57:24,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:57:24,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:57:24,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:57:24,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:57:24,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:57:24,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:57:24,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:57:24,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:57:24,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:57:24,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:57:24,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:57:24,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:57:24,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:57:24,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:57:24,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:57:24,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:57:24,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:57:24,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:57:24,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:57:24,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:57:24,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:57:24,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:57:24,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:57:24,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:57:24,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:57:24,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:57:24,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:57:24,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:57:24,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:57:24,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:57:24,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:57:24,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-24 09:57:24,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:57:24,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:57:24,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:57:24,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:57:24,952 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:57:24,952 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:57:24,953 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:57:24,953 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:57:24,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:57:24,953 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:57:24,954 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:57:24,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:57:24,955 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:57:24,955 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:57:24,955 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:57:24,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:57:24,956 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:57:24,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:57:24,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:57:24,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:57:24,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:57:24,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:57:24,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:57:24,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:57:24,958 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 09:57:24,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:57:24,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:57:24,959 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:57:24,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:57:24,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:57:24,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:57:24,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:57:24,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:57:24,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:57:24,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:57:24,963 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:57:24,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:57:24,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:57:24,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:57:24,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:57:24,964 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_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241 [2021-10-24 09:57:25,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:57:25,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:57:25,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:57:25,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:57:25,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:57:25,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2021-10-24 09:57:25,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/data/4aeeaf6b4/5fbe56897f5f4d2684267b1e2c90df05/FLAG17312bef9 [2021-10-24 09:57:25,763 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:57:25,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2021-10-24 09:57:25,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/data/4aeeaf6b4/5fbe56897f5f4d2684267b1e2c90df05/FLAG17312bef9 [2021-10-24 09:57:25,800 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/data/4aeeaf6b4/5fbe56897f5f4d2684267b1e2c90df05 [2021-10-24 09:57:25,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:57:25,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:57:25,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:57:25,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:57:25,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:57:25,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:25" (1/1) ... [2021-10-24 09:57:25,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d6c5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:25, skipping insertion in model container [2021-10-24 09:57:25,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:25" (1/1) ... [2021-10-24 09:57:25,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:57:25,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:57:26,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c[948,961] [2021-10-24 09:57:26,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:57:26,060 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:57:26,081 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c[948,961] [2021-10-24 09:57:26,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:57:26,096 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:57:26,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26 WrapperNode [2021-10-24 09:57:26,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:57:26,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:57:26,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:57:26,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:57:26,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:57:26,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:57:26,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:57:26,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:57:26,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:57:26,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:57:26,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:57:26,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:57:26,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (1/1) ... [2021-10-24 09:57:26,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:57:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:57:26,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:57:26,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:57:26,269 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2021-10-24 09:57:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2021-10-24 09:57:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:57:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:57:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2021-10-24 09:57:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2021-10-24 09:57:26,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:57:26,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:57:26,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:57:26,521 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-24 09:57:26,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:26 BoogieIcfgContainer [2021-10-24 09:57:26,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:57:26,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:57:26,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:57:26,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:57:26,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:25" (1/3) ... [2021-10-24 09:57:26,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9603c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:26, skipping insertion in model container [2021-10-24 09:57:26,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:26" (2/3) ... [2021-10-24 09:57:26,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9603c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:26, skipping insertion in model container [2021-10-24 09:57:26,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:26" (3/3) ... [2021-10-24 09:57:26,531 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd03WithOverflowBug.c [2021-10-24 09:57:26,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:57:26,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 09:57:26,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:57:26,587 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:57:26,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 09:57:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-24 09:57:26,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:57:26,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:26,608 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:57:26,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:57:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:26,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1814385789, now seen corresponding path program 1 times [2021-10-24 09:57:26,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:57:26,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207654400] [2021-10-24 09:57:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:26,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:57:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:57:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:57:26,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:57:26,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207654400] [2021-10-24 09:57:26,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207654400] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:57:26,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:57:26,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:57:26,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213615134] [2021-10-24 09:57:26,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:57:26,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:57:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:57:26,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:57:26,827 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:57:26,939 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2021-10-24 09:57:26,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:57:26,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 09:57:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:57:26,949 INFO L225 Difference]: With dead ends: 39 [2021-10-24 09:57:26,950 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 09:57:26,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:57:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 09:57:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-10-24 09:57:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-24 09:57:26,987 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 6 [2021-10-24 09:57:26,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:57:26,987 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-24 09:57:26,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:57:26,988 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-24 09:57:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:57:26,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:57:26,989 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:57:26,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:57:26,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:57:26,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:57:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash -411384569, now seen corresponding path program 1 times [2021-10-24 09:57:26,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:57:26,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102158400] [2021-10-24 09:57:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:57:26,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:57:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:57:27,021 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:57:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:57:27,067 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:57:27,067 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:57:27,069 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:57:27,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:57:27,071 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:57:27,072 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:57:27,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:57:27,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:57:27,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:27 BoogieIcfgContainer [2021-10-24 09:57:27,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:57:27,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:57:27,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:57:27,100 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:57:27,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:26" (3/4) ... [2021-10-24 09:57:27,102 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:57:27,163 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:57:27,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:57:27,166 INFO L168 Benchmark]: Toolchain (without parser) took 1360.84 ms. Allocated memory is still 121.6 MB. Free memory was 82.9 MB in the beginning and 54.8 MB in the end (delta: 28.1 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:27,167 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 121.6 MB. Free memory was 99.5 MB in the beginning and 99.4 MB in the end (delta: 66.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:57:27,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.48 ms. Allocated memory is still 121.6 MB. Free memory was 82.7 MB in the beginning and 96.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:27,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.00 ms. Allocated memory is still 121.6 MB. Free memory was 96.2 MB in the beginning and 94.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:27,176 INFO L168 Benchmark]: Boogie Preprocessor took 29.99 ms. Allocated memory is still 121.6 MB. Free memory was 94.9 MB in the beginning and 93.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:57:27,176 INFO L168 Benchmark]: RCFGBuilder took 359.74 ms. Allocated memory is still 121.6 MB. Free memory was 93.7 MB in the beginning and 82.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:27,176 INFO L168 Benchmark]: TraceAbstraction took 573.07 ms. Allocated memory is still 121.6 MB. Free memory was 81.3 MB in the beginning and 56.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:27,177 INFO L168 Benchmark]: Witness Printer took 65.17 ms. Allocated memory is still 121.6 MB. Free memory was 56.5 MB in the beginning and 54.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:57:27,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 121.6 MB. Free memory was 99.5 MB in the beginning and 99.4 MB in the end (delta: 66.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.48 ms. Allocated memory is still 121.6 MB. Free memory was 82.7 MB in the beginning and 96.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.00 ms. Allocated memory is still 121.6 MB. Free memory was 96.2 MB in the beginning and 94.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.99 ms. Allocated memory is still 121.6 MB. Free memory was 94.9 MB in the beginning and 93.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.74 ms. Allocated memory is still 121.6 MB. Free memory was 93.7 MB in the beginning and 82.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 573.07 ms. Allocated memory is still 121.6 MB. Free memory was 81.3 MB in the beginning and 56.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 65.17 ms. Allocated memory is still 121.6 MB. Free memory was 56.5 MB in the beginning and 54.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 34]: integer overflow possible integer overflow possible We found a FailurePath: [L40] int n = __VERIFIER_nondet_int(); [L41] CALL isEven(n) VAL [\old(n)=-2147483648] [L29] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648] [L31] COND FALSE !(n == 1) VAL [\old(n)=-2147483648, n=-2147483648] [L34] n - 1 VAL [\old(n)=-2147483648, n=-2147483648] - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 497.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.9ms, AutomataDifference: 140.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 19 SDslu, 64 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.1ms SsaConstructionTime, 56.2ms SatisfiabilityAnalysisTime, 77.4ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-10-24 09:57:27,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_163640db-1449-463d-9856-b72ac669010d/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...