./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 3ffe9d53e7df9ed7c01a08260077d50503ae990d73f9d5314e3d980848a06263 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:23:45,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:23:45,275 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 11:23:45,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:23:45,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:23:45,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:23:45,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:23:45,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:23:45,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:23:45,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:23:45,315 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:23:45,316 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:23:45,316 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:23:45,317 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:23:45,317 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:23:45,319 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:23:45,320 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:23:45,320 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:23:45,320 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:23:45,321 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:23:45,325 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:23:45,329 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:23:45,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:23:45,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:23:45,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:23:45,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:23:45,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:23:45,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:23:45,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:23:45,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:23:45,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:23:45,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:23:45,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 11:23:45,332 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:23:45,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:23:45,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:23:45,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:23:45,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:23:45,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:23:45,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:23:45,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:45,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:23:45,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:23:45,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:23:45,341 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:23:45,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:23:45,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:23:45,341 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:23:45,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:23:45,342 INFO L153 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_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ffe9d53e7df9ed7c01a08260077d50503ae990d73f9d5314e3d980848a06263 [2024-11-02 11:23:45,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:23:45,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:23:45,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:23:45,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:23:45,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:23:45,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/recursive-simple/id_b5_o10-1.c Unable to find full path for "g++" [2024-11-02 11:23:48,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:23:48,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:23:48,364 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/sv-benchmarks/c/recursive-simple/id_b5_o10-1.c [2024-11-02 11:23:48,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/data/76def8595/db49c20ebb1749e381281182b960c1c6/FLAG2f05696a6 [2024-11-02 11:23:48,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/data/76def8595/db49c20ebb1749e381281182b960c1c6 [2024-11-02 11:23:48,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:23:48,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:23:48,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:48,407 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:23:48,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:23:48,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8227c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48, skipping insertion in model container [2024-11-02 11:23:48,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:23:48,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:48,690 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:23:48,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:23:48,732 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:23:48,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48 WrapperNode [2024-11-02 11:23:48,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:23:48,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:48,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:23:48,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:23:48,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,769 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2024-11-02 11:23:48,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:23:48,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:23:48,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:23:48,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:23:48,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:23:48,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:23:48,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:23:48,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:23:48,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (1/1) ... [2024-11-02 11:23:48,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:23:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:23:48,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:23:48,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:23:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:23:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:23:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:23:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:23:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-02 11:23:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-02 11:23:48,951 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:23:48,953 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:23:49,093 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-02 11:23:49,093 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:23:49,166 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:23:49,166 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 11:23:49,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:49 BoogieIcfgContainer [2024-11-02 11:23:49,167 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:23:49,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:23:49,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:23:49,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:23:49,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:23:48" (1/3) ... [2024-11-02 11:23:49,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623a670d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:49, skipping insertion in model container [2024-11-02 11:23:49,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:23:48" (2/3) ... [2024-11-02 11:23:49,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@623a670d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:23:49, skipping insertion in model container [2024-11-02 11:23:49,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:49" (3/3) ... [2024-11-02 11:23:49,183 INFO L112 eAbstractionObserver]: Analyzing ICFG id_b5_o10-1.c [2024-11-02 11:23:49,204 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:23:49,204 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-02 11:23:49,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:23:49,287 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@19ded129, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:23:49,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-02 11:23:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 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) [2024-11-02 11:23:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-02 11:23:49,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:23:49,303 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-02 11:23:49,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 11:23:49,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:23:49,310 INFO L85 PathProgramCache]: Analyzing trace with hash 67612789, now seen corresponding path program 1 times [2024-11-02 11:23:49,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:23:49,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207522132] [2024-11-02 11:23:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:23:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:23:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:23:49,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 11:23:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:23:49,513 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 11:23:49,515 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 11:23:49,516 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-02 11:23:49,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-02 11:23:49,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-02 11:23:49,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-02 11:23:49,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:23:49,535 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 11:23:49,565 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 11:23:49,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:23:49 BoogieIcfgContainer [2024-11-02 11:23:49,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 11:23:49,580 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 11:23:49,581 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 11:23:49,581 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 11:23:49,582 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:23:49" (3/4) ... [2024-11-02 11:23:49,583 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-02 11:23:49,640 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/witness.graphml [2024-11-02 11:23:49,641 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 11:23:49,645 INFO L158 Benchmark]: Toolchain (without parser) took 1238.38ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 69.3MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-02 11:23:49,645 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:23:49,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.21ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 100.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 11:23:49,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.37ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 98.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:23:49,650 INFO L158 Benchmark]: Boogie Preprocessor took 27.63ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 97.7MB in the end (delta: 991.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:23:49,651 INFO L158 Benchmark]: RCFGBuilder took 368.18ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 85.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-02 11:23:49,652 INFO L158 Benchmark]: TraceAbstraction took 402.21ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 70.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 11:23:49,653 INFO L158 Benchmark]: Witness Printer took 60.86ms. Allocated memory is still 142.6MB. Free memory was 70.8MB in the beginning and 69.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:23:49,656 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.21ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 100.0MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.37ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 98.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.63ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 97.7MB in the end (delta: 991.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 368.18ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 85.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 402.21ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 70.8MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 60.86ms. Allocated memory is still 142.6MB. Free memory was 70.8MB in the beginning and 69.3MB 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: [L14] int input = __VERIFIER_nondet_int(); [L15] CALL id(input) VAL [\old(x)=-2147483648] [L7] COND FALSE !(x==0) VAL [\old(x)=-2147483648, x=-2147483648] [L8] x-1 VAL [\old(x)=-2147483648] - 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: 8]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2024-11-02 11:23:49,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bced579-2944-4208-b294-9bd8bbd6b6b7/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)