./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex10.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba --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 64bit --witnessprinter.graph.data.programhash aa3b43f792186d6a3a352371ca1ff1e69a3803ae0fdc3e5930b5d657527704c5 --- 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-b5237d8 [2022-11-22 00:31:28,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:31:28,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:31:28,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:31:28,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:31:28,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:31:28,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:31:28,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:31:28,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:31:28,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:31:28,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:31:28,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:31:28,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:31:28,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:31:28,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:31:28,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:31:28,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:31:28,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:31:28,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:31:28,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:31:28,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:31:28,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:31:28,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:31:28,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:31:28,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:31:28,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:31:28,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:31:28,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:31:28,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:31:28,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:31:28,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:31:28,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:31:28,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:31:28,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:31:28,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:31:28,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:31:28,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:31:28,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:31:28,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:31:28,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:31:28,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:31:28,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 00:31:28,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:31:28,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:31:28,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:31:28,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:31:28,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:31:28,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:31:28,641 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:31:28,641 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:31:28,641 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:31:28,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:31:28,641 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:31:28,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:31:28,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:31:28,642 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:31:28,642 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:31:28,642 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:31:28,643 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:31:28,643 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:31:28,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:31:28,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:31:28,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:31:28,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:31:28,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:31:28,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:31:28,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:31:28,645 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:31:28,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:31:28,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:31:28,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:31:28,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:31:28,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:31:28,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:31:28,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:31:28,646 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:31:28,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:31:28,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:31:28,647 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:31:28,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:31:28,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:31:28,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:31:28,647 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_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa3b43f792186d6a3a352371ca1ff1e69a3803ae0fdc3e5930b5d657527704c5 [2022-11-22 00:31:28,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:31:28,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:31:28,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:31:28,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:31:28,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:31:28,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex10.i [2022-11-22 00:31:32,002 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:31:32,186 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:31:32,187 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex10.i [2022-11-22 00:31:32,198 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/data/2281fab87/deb80887fcd1433daec8d61bdb60688c/FLAG4917e1034 [2022-11-22 00:31:32,217 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/data/2281fab87/deb80887fcd1433daec8d61bdb60688c [2022-11-22 00:31:32,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:31:32,224 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:31:32,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:31:32,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:31:32,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:31:32,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c10cad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32, skipping insertion in model container [2022-11-22 00:31:32,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:31:32,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:31:32,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:31:32,476 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:31:32,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:31:32,510 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:31:32,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32 WrapperNode [2022-11-22 00:31:32,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:31:32,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:31:32,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:31:32,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:31:32,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,546 INFO L138 Inliner]: procedures = 12, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-22 00:31:32,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:31:32,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:31:32,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:31:32,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:31:32,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:31:32,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:31:32,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:31:32,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:31:32,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:31:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:32,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:31:32,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-22 00:31:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-22 00:31:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-11-22 00:31:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-11-22 00:31:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:31:32,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:31:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:31:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:31:32,810 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:31:32,813 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:31:33,016 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:31:33,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:31:33,047 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:31:33,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:33 BoogieIcfgContainer [2022-11-22 00:31:33,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:31:33,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:31:33,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:31:33,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:31:33,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:31:32" (1/3) ... [2022-11-22 00:31:33,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba23734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:33, skipping insertion in model container [2022-11-22 00:31:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (2/3) ... [2022-11-22 00:31:33,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba23734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:33, skipping insertion in model container [2022-11-22 00:31:33,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:33" (3/3) ... [2022-11-22 00:31:33,057 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex10.i [2022-11-22 00:31:33,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:31:33,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 00:31:33,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:31:33,183 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;@59da764d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:31:33,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 00:31:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 22 states have internal predecessors, (22), 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) [2022-11-22 00:31:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:31:33,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:33,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:31:33,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-11-22 00:31:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2120928, now seen corresponding path program 1 times [2022-11-22 00:31:33,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:33,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319252821] [2022-11-22 00:31:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:31:33,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 00:31:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 00:31:33,395 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 00:31:33,397 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 00:31:33,398 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2022-11-22 00:31:33,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2022-11-22 00:31:33,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2022-11-22 00:31:33,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2022-11-22 00:31:33,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2022-11-22 00:31:33,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2022-11-22 00:31:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:31:33,410 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 00:31:33,416 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:31:33,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:31:33 BoogieIcfgContainer [2022-11-22 00:31:33,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:31:33,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:31:33,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:31:33,447 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:31:33,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:33" (3/4) ... [2022-11-22 00:31:33,450 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 00:31:33,499 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:31:33,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:31:33,500 INFO L158 Benchmark]: Toolchain (without parser) took 1275.95ms. Allocated memory is still 134.2MB. Free memory was 91.3MB in the beginning and 91.4MB in the end (delta: -123.7kB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-11-22 00:31:33,504 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory was 108.2MB in the beginning and 107.9MB in the end (delta: 211.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:31:33,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.12ms. Allocated memory is still 134.2MB. Free memory was 91.0MB in the beginning and 81.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:31:33,508 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.09ms. Allocated memory is still 134.2MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:31:33,508 INFO L158 Benchmark]: Boogie Preprocessor took 41.08ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:31:33,509 INFO L158 Benchmark]: RCFGBuilder took 461.11ms. Allocated memory is still 134.2MB. Free memory was 78.8MB in the beginning and 66.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 00:31:33,509 INFO L158 Benchmark]: TraceAbstraction took 393.73ms. Allocated memory is still 134.2MB. Free memory was 65.9MB in the beginning and 93.5MB in the end (delta: -27.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:31:33,510 INFO L158 Benchmark]: Witness Printer took 52.40ms. Allocated memory is still 134.2MB. Free memory was 92.9MB in the beginning and 91.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:31:33,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory was 108.2MB in the beginning and 107.9MB in the end (delta: 211.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.12ms. Allocated memory is still 134.2MB. Free memory was 91.0MB in the beginning and 81.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.09ms. Allocated memory is still 134.2MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.08ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 78.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.11ms. Allocated memory is still 134.2MB. Free memory was 78.8MB in the beginning and 66.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 393.73ms. Allocated memory is still 134.2MB. Free memory was 65.9MB in the beginning and 93.5MB in the end (delta: -27.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.40ms. Allocated memory is still 134.2MB. Free memory was 92.9MB in the beginning and 91.4MB 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: 13]: integer overflow possible integer overflow possible We found a FailurePath: [L43] int *p1 = malloc(sizeof(int)); [L44] int *p2 = malloc(sizeof(int)); [L46] *p1 = __VERIFIER_nondet_int() [L47] *p2 = __VERIFIER_nondet_int() [L49] CALL f(p1,p2) VAL [p={-1:0}, q={-2:0}] [L13] EXPR \read(*p) [L13] EXPR \read(*q) VAL [\read(*p)=2, \read(*q)=2147483646, p={-1:0}, p={-1:0}, q={-2:0}, q={-2:0}] [L13] *p + *q VAL [\read(*p)=2, \read(*q)=2147483646, p={-1:0}, p={-1:0}, q={-2:0}, q={-2:0}] - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 6 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=26occurred 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, 4 NumberOfCodeBlocks, 4 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! [2022-11-22 00:31:33,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d632b39-3976-42ce-9ad0-520c7cbaf688/bin/utaipan-g80aRyZoba/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)