./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/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_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/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 32bit --witnessprinter.graph.data.programhash 2355a4d05f76bd59f1e3cc71c2462258521b54a0 ................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 02:21:04,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:04,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:04,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:04,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:04,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:04,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:04,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:04,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:04,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:04,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:04,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:04,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:04,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:04,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:04,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:04,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:04,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:04,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:04,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:04,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:04,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:04,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:04,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:05,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:05,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:05,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:05,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:05,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:05,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:05,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:05,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:05,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:05,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:05,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:05,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:05,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:05,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:05,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:05,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:05,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:05,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:21:05,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:05,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:05,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:05,049 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:05,049 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:05,049 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:05,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:05,050 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:05,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:05,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:05,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:05,051 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:05,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:05,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:05,052 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:05,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:05,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:05,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:05,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:05,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:05,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:05,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:05,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:05,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:05,056 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:21:05,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:05,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:05,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:05,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:05,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:05,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:05,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:05,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:05,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:05,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:05,060 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:05,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:05,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:05,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:05,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:05,062 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_ff07c893-f42d-418d-a8e2-6f5d2c14279c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2355a4d05f76bd59f1e3cc71c2462258521b54a0 [2021-10-11 02:21:05,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:05,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:05,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:05,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:05,393 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:05,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/recursive-simple/sum_non.c [2021-10-11 02:21:05,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/data/b1f053b76/c8c1020ae4524f79b162e0d48d8825df/FLAG2888f2535 [2021-10-11 02:21:05,992 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:05,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/sv-benchmarks/c/recursive-simple/sum_non.c [2021-10-11 02:21:05,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/data/b1f053b76/c8c1020ae4524f79b162e0d48d8825df/FLAG2888f2535 [2021-10-11 02:21:06,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/data/b1f053b76/c8c1020ae4524f79b162e0d48d8825df [2021-10-11 02:21:06,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:06,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:06,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:06,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:06,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:06,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@851cf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06, skipping insertion in model container [2021-10-11 02:21:06,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:06,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:06,551 WARN L226 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_ff07c893-f42d-418d-a8e2-6f5d2c14279c/sv-benchmarks/c/recursive-simple/sum_non.c[561,574] [2021-10-11 02:21:06,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:06,579 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:06,599 WARN L226 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_ff07c893-f42d-418d-a8e2-6f5d2c14279c/sv-benchmarks/c/recursive-simple/sum_non.c[561,574] [2021-10-11 02:21:06,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:06,613 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:06,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06 WrapperNode [2021-10-11 02:21:06,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:06,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:06,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:06,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:06,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:06,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:06,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:06,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:06,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... [2021-10-11 02:21:06,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:06,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:06,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:06,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:06,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/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 02:21:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-10-11 02:21:06,751 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-10-11 02:21:06,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:06,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:07,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:07,025 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:21:07,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:07 BoogieIcfgContainer [2021-10-11 02:21:07,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:07,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:07,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:07,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:06" (1/3) ... [2021-10-11 02:21:07,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd5dd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:07, skipping insertion in model container [2021-10-11 02:21:07,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:06" (2/3) ... [2021-10-11 02:21:07,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd5dd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:07, skipping insertion in model container [2021-10-11 02:21:07,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:07" (3/3) ... [2021-10-11 02:21:07,039 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non.c [2021-10-11 02:21:07,055 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:07,059 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:21:07,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:21:07,100 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:07,101 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:07,101 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:07,101 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:07,101 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:07,101 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:07,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:07,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:07,117 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2021-10-11 02:21:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:07,122 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:07,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:07,123 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:21:07,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:07,129 INFO L82 PathProgramCache]: Analyzing trace with hash 69521367, now seen corresponding path program 1 times [2021-10-11 02:21:07,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:07,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934285683] [2021-10-11 02:21:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:07,396 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 02:21:07,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934285683] [2021-10-11 02:21:07,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:07,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:07,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660225187] [2021-10-11 02:21:07,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:07,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:07,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:07,419 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2021-10-11 02:21:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:07,663 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-10-11 02:21:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:21:07,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:21:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:07,677 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:21:07,677 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 02:21:07,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 02:21:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2021-10-11 02:21:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 02:21:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2021-10-11 02:21:07,724 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2021-10-11 02:21:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:07,724 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2021-10-11 02:21:07,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2021-10-11 02:21:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:21:07,725 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:07,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:21:07,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:07,726 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:21:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:07,727 INFO L82 PathProgramCache]: Analyzing trace with hash 69521527, now seen corresponding path program 1 times [2021-10-11 02:21:07,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:07,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807301978] [2021-10-11 02:21:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:07,781 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 02:21:07,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807301978] [2021-10-11 02:21:07,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:07,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:07,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083718868] [2021-10-11 02:21:07,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:07,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:07,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:07,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:07,786 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 5 states. [2021-10-11 02:21:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:07,850 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-10-11 02:21:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:07,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2021-10-11 02:21:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:07,853 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:21:07,853 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:21:07,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:21:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-11 02:21:07,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:21:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-10-11 02:21:07,865 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 5 [2021-10-11 02:21:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:07,865 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-10-11 02:21:07,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-10-11 02:21:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:07,866 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:07,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:07,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:07,867 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:21:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:07,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2139804863, now seen corresponding path program 1 times [2021-10-11 02:21:07,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:07,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279545009] [2021-10-11 02:21:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:07,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:07,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:07,947 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:07,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:07,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:21:07,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:07 BoogieIcfgContainer [2021-10-11 02:21:08,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:08,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:08,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:08,005 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:08,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:07" (3/4) ... [2021-10-11 02:21:08,008 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:08,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff07c893-f42d-418d-a8e2-6f5d2c14279c/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:08,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:08,053 INFO L168 Benchmark]: Toolchain (without parser) took 1667.05 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 84.1 MB in the beginning and 89.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:08,054 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 113.2 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:08,055 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.30 ms. Allocated memory is still 113.2 MB. Free memory was 83.9 MB in the beginning and 89.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:08,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.18 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:08,056 INFO L168 Benchmark]: Boogie Preprocessor took 20.30 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 86.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:08,057 INFO L168 Benchmark]: RCFGBuilder took 364.27 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 70.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:08,058 INFO L168 Benchmark]: TraceAbstraction took 972.89 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 69.9 MB in the beginning and 90.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:08,058 INFO L168 Benchmark]: Witness Printer took 47.59 ms. Allocated memory is still 148.9 MB. Free memory was 90.4 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:08,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 113.2 MB. Free memory is still 68.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.30 ms. Allocated memory is still 113.2 MB. Free memory was 83.9 MB in the beginning and 89.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.18 ms. Allocated memory is still 113.2 MB. Free memory was 89.1 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.30 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 86.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 364.27 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 70.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 972.89 ms. Allocated memory was 113.2 MB in the beginning and 148.9 MB in the end (delta: 35.7 MB). Free memory was 69.9 MB in the beginning and 90.4 MB in the end (delta: -20.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * Witness Printer took 47.59 ms. Allocated memory is still 148.9 MB. Free memory was 90.4 MB in the beginning and 89.0 MB in the end (delta: 1.4 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: 8]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int a = __VERIFIER_nondet_int(); [L16] int b = __VERIFIER_nondet_int(); [L17] CALL sum(a, b) VAL [\old(m)=-2147483648, \old(n)=-1] [L7] COND TRUE n <= 0 VAL [\old(m)=-2147483648, \old(n)=-1, m=-2147483648, n=-1] [L8] m + n VAL [\old(m)=-2147483648, \old(n)=-1, m=-2147483648, n=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 83 SDslu, 58 SDs, 0 SdLazy, 103 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 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...