./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS --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 13160766ab5e643bd08f9724b40035ea4b7373673380c24ecb20b0478591b2b8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:54:55,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:54:55,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:54:55,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:54:55,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:54:55,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:54:55,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:54:55,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:54:55,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:54:55,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:54:55,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:54:55,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:54:55,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:54:55,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:54:55,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:54:55,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:54:55,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:54:55,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:54:55,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:54:55,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:54:55,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:54:55,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:54:55,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:54:55,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:54:55,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:54:55,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:54:55,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:54:55,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:54:55,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:54:55,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:54:55,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:54:55,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:54:55,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:54:55,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:54:55,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:54:55,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:54:55,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:54:55,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:54:55,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:54:55,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:54:55,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:54:55,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 06:54:55,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:54:55,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:54:55,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:54:55,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:54:55,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:54:55,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:54:55,488 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:54:55,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:54:55,489 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:54:55,489 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:54:55,489 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:54:55,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:54:55,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:54:55,490 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:54:55,490 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:54:55,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:54:55,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:54:55,491 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:54:55,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:54:55,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:54:55,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:54:55,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:54:55,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:54:55,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:54:55,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:54:55,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:54:55,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:54:55,493 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:54:55,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:54:55,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:54:55,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:54:55,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:54:55,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:54:55,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:54:55,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:54:55,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:54:55,496 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:54:55,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:54:55,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:54:55,497 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:54:55,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:54:55,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:54:55,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:54:55,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13160766ab5e643bd08f9724b40035ea4b7373673380c24ecb20b0478591b2b8 [2022-11-19 06:54:55,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:54:55,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:54:55,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:54:55,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:54:55,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:54:55,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/recursive-simple/sum_non.c [2022-11-19 06:54:55,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/data/8b84db235/c5d709a968b941c990f7600bb6008840/FLAG2ca3fb0a8 [2022-11-19 06:54:56,450 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:54:56,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/sv-benchmarks/c/recursive-simple/sum_non.c [2022-11-19 06:54:56,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/data/8b84db235/c5d709a968b941c990f7600bb6008840/FLAG2ca3fb0a8 [2022-11-19 06:54:56,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/data/8b84db235/c5d709a968b941c990f7600bb6008840 [2022-11-19 06:54:56,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:54:56,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:54:56,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:54:56,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:54:56,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:54:56,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:54:56" (1/1) ... [2022-11-19 06:54:56,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff492ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:56, skipping insertion in model container [2022-11-19 06:54:56,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:54:56" (1/1) ... [2022-11-19 06:54:56,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:54:56,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:54:57,159 WARN L234 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_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/sv-benchmarks/c/recursive-simple/sum_non.c[561,574] [2022-11-19 06:54:57,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:54:57,168 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:54:57,192 WARN L234 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_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/sv-benchmarks/c/recursive-simple/sum_non.c[561,574] [2022-11-19 06:54:57,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:54:57,204 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:54:57,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57 WrapperNode [2022-11-19 06:54:57,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:54:57,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:54:57,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:54:57,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:54:57,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,236 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-11-19 06:54:57,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:54:57,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:54:57,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:54:57,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:54:57,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:54:57,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:54:57,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:54:57,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:54:57,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (1/1) ... [2022-11-19 06:54:57,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:54:57,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:57,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:54:57,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:54:57,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:54:57,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:54:57,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:54:57,335 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-11-19 06:54:57,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-11-19 06:54:57,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:54:57,402 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:54:57,404 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:54:57,530 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:54:57,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:54:57,553 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:54:57,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:54:57 BoogieIcfgContainer [2022-11-19 06:54:57,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:54:57,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:54:57,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:54:57,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:54:57,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:54:56" (1/3) ... [2022-11-19 06:54:57,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77aa435b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:54:57, skipping insertion in model container [2022-11-19 06:54:57,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:54:57" (2/3) ... [2022-11-19 06:54:57,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77aa435b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:54:57, skipping insertion in model container [2022-11-19 06:54:57,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:54:57" (3/3) ... [2022-11-19 06:54:57,564 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non.c [2022-11-19 06:54:57,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:54:57,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 06:54:57,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:54:57,641 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@378333b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:54:57,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 06:54:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:54:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:54:57,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:57,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:54:57,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:54:57,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash 69521367, now seen corresponding path program 1 times [2022-11-19 06:54:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:57,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245165599] [2022-11-19 06:54:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:54:57,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:57,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245165599] [2022-11-19 06:54:57,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245165599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:57,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:57,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:54:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930953652] [2022-11-19 06:54:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:57,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:54:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:54:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:54:57,997 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-19 06:54:58,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:58,286 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-11-19 06:54:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:54:58,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 5 [2022-11-19 06:54:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:58,297 INFO L225 Difference]: With dead ends: 48 [2022-11-19 06:54:58,297 INFO L226 Difference]: Without dead ends: 46 [2022-11-19 06:54:58,300 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:54:58,304 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:58,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 46 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:54:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-19 06:54:58,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2022-11-19 06:54:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 31 states have internal predecessors, (38), 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) [2022-11-19 06:54:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-11-19 06:54:58,362 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 5 [2022-11-19 06:54:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:58,363 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-11-19 06:54:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-19 06:54:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-11-19 06:54:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:54:58,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:58,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:54:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:54:58,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:54:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:58,368 INFO L85 PathProgramCache]: Analyzing trace with hash 69521527, now seen corresponding path program 1 times [2022-11-19 06:54:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:58,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763831959] [2022-11-19 06:54:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:58,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:54:58,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:58,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763831959] [2022-11-19 06:54:58,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763831959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:58,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:58,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:54:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715054816] [2022-11-19 06:54:58,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:58,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:54:58,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:54:58,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:54:58,486 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-19 06:54:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:58,568 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-11-19 06:54:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:54:58,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2022-11-19 06:54:58,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:58,570 INFO L225 Difference]: With dead ends: 37 [2022-11-19 06:54:58,570 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 06:54:58,571 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:54:58,572 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:58,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:54:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 06:54:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-19 06:54:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.5) internal successors, (36), 30 states have internal predecessors, (36), 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) [2022-11-19 06:54:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-19 06:54:58,580 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 5 [2022-11-19 06:54:58,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:58,581 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-19 06:54:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-19 06:54:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-19 06:54:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:54:58,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:58,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:54:58,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:54:58,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 06:54:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2139804863, now seen corresponding path program 1 times [2022-11-19 06:54:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:58,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778749455] [2022-11-19 06:54:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:54:58,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:54:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:54:58,620 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:54:58,620 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:54:58,621 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-19 06:54:58,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-19 06:54:58,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-19 06:54:58,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-19 06:54:58,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-19 06:54:58,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-19 06:54:58,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-19 06:54:58,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-19 06:54:58,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:54:58,629 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 06:54:58,634 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:54:58,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:54:58 BoogieIcfgContainer [2022-11-19 06:54:58,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:54:58,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:54:58,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:54:58,653 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:54:58,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:54:57" (3/4) ... [2022-11-19 06:54:58,656 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 06:54:58,685 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:54:58,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:54:58,686 INFO L158 Benchmark]: Toolchain (without parser) took 1753.81ms. Allocated memory is still 138.4MB. Free memory was 105.7MB in the beginning and 95.8MB in the end (delta: 9.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-11-19 06:54:58,687 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:54:58,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.14ms. Allocated memory is still 138.4MB. Free memory was 105.4MB in the beginning and 113.7MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:54:58,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.90ms. Allocated memory is still 138.4MB. Free memory was 113.7MB in the beginning and 112.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:54:58,688 INFO L158 Benchmark]: Boogie Preprocessor took 17.72ms. Allocated memory is still 138.4MB. Free memory was 112.5MB in the beginning and 111.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:54:58,689 INFO L158 Benchmark]: RCFGBuilder took 300.01ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 100.3MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:54:58,689 INFO L158 Benchmark]: TraceAbstraction took 1094.83ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 97.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2022-11-19 06:54:58,689 INFO L158 Benchmark]: Witness Printer took 32.69ms. Allocated memory is still 138.4MB. Free memory was 97.3MB in the beginning and 95.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:54:58,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 46.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.14ms. Allocated memory is still 138.4MB. Free memory was 105.4MB in the beginning and 113.7MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.90ms. Allocated memory is still 138.4MB. Free memory was 113.7MB in the beginning and 112.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.72ms. Allocated memory is still 138.4MB. Free memory was 112.5MB in the beginning and 111.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 300.01ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 100.3MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1094.83ms. Allocated memory is still 138.4MB. Free memory was 99.5MB in the beginning and 97.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Witness Printer took 32.69ms. Allocated memory is still 138.4MB. Free memory was 97.3MB in the beginning and 95.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 8]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: 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 2 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 21 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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, InterpolantAutomatonStates: 13, 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, 26 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! [2022-11-19 06:54:58,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d660cb5-b38c-4eb4-97dc-296ab7f1a4f7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)