./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 --- 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-6b4ec56 [2022-11-20 17:42:05,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 17:42:05,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 17:42:05,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 17:42:05,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 17:42:05,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 17:42:05,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 17:42:05,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 17:42:05,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 17:42:05,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 17:42:05,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 17:42:05,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 17:42:05,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 17:42:05,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 17:42:05,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 17:42:05,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 17:42:05,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 17:42:05,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 17:42:05,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 17:42:05,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 17:42:05,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 17:42:06,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 17:42:06,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 17:42:06,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 17:42:06,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 17:42:06,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 17:42:06,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 17:42:06,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 17:42:06,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 17:42:06,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 17:42:06,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 17:42:06,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 17:42:06,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 17:42:06,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 17:42:06,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 17:42:06,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 17:42:06,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 17:42:06,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 17:42:06,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 17:42:06,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 17:42:06,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 17:42:06,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-20 17:42:06,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 17:42:06,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 17:42:06,104 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 17:42:06,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 17:42:06,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 17:42:06,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 17:42:06,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 17:42:06,106 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 17:42:06,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 17:42:06,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 17:42:06,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 17:42:06,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 17:42:06,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 17:42:06,109 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 17:42:06,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 17:42:06,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 17:42:06,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 17:42:06,110 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 17:42:06,110 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 17:42:06,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 17:42:06,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:42:06,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 17:42:06,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 17:42:06,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 17:42:06,112 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 17:42:06,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 17:42:06,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 17:42:06,113 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_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c126101f069ab488324cfc4632ee48c30de136646e991b84ddea84d63344d8 [2022-11-20 17:42:06,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 17:42:06,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 17:42:06,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 17:42:06,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 17:42:06,418 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 17:42:06,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2022-11-20 17:42:09,543 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 17:42:09,719 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 17:42:09,720 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex1.i [2022-11-20 17:42:09,726 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/data/bc1378aa9/665fd29c0e544771a12e3a56fcde9e9b/FLAG9da8bbfe2 [2022-11-20 17:42:09,742 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/data/bc1378aa9/665fd29c0e544771a12e3a56fcde9e9b [2022-11-20 17:42:09,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 17:42:09,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 17:42:09,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 17:42:09,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 17:42:09,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 17:42:09,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:09,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69538d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09, skipping insertion in model container [2022-11-20 17:42:09,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:09,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 17:42:09,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 17:42:09,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:42:09,961 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 17:42:09,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:42:09,998 INFO L208 MainTranslator]: Completed translation [2022-11-20 17:42:09,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09 WrapperNode [2022-11-20 17:42:09,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 17:42:10,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 17:42:10,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 17:42:10,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 17:42:10,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,036 INFO L138 Inliner]: procedures = 11, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-11-20 17:42:10,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 17:42:10,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 17:42:10,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 17:42:10,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 17:42:10,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 17:42:10,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 17:42:10,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 17:42:10,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 17:42:10,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:09" (1/1) ... [2022-11-20 17:42:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:42:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 17:42:10,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 17:42:10,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 17:42:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 17:42:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-20 17:42:10,198 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-20 17:42:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 17:42:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 17:42:10,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 17:42:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 17:42:10,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 17:42:10,283 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 17:42:10,285 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 17:42:10,582 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 17:42:10,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 17:42:10,602 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 17:42:10,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:10 BoogieIcfgContainer [2022-11-20 17:42:10,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 17:42:10,605 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 17:42:10,605 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 17:42:10,613 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 17:42:10,614 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:10" (1/1) ... [2022-11-20 17:42:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 17:42:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 28 transitions. [2022-11-20 17:42:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-20 17:42:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:42:10,684 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 28 states and 33 transitions. [2022-11-20 17:42:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-20 17:42:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:42:11,341 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 45 transitions. [2022-11-20 17:42:12,369 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-11-20 17:42:12,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:42:12,370 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:12,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:13,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 39 states and 54 transitions. [2022-11-20 17:42:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2022-11-20 17:42:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:42:13,643 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 38 states and 53 transitions. [2022-11-20 17:42:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2022-11-20 17:42:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 17:42:13,863 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:13,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 43 states and 62 transitions. [2022-11-20 17:42:15,143 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 62 transitions. [2022-11-20 17:42:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 17:42:15,143 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 43 states and 61 transitions. [2022-11-20 17:42:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2022-11-20 17:42:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 17:42:16,050 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:16,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 49 states and 79 transitions. [2022-11-20 17:42:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2022-11-20 17:42:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 17:42:18,258 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:18,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 55 states and 90 transitions. [2022-11-20 17:42:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 90 transitions. [2022-11-20 17:42:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 17:42:20,540 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:20,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 56 states and 93 transitions. [2022-11-20 17:42:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 93 transitions. [2022-11-20 17:42:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 17:42:20,955 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 61 states and 103 transitions. [2022-11-20 17:42:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 103 transitions. [2022-11-20 17:42:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 17:42:22,364 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 63 states and 104 transitions. [2022-11-20 17:42:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 104 transitions. [2022-11-20 17:42:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 17:42:23,281 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:23,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:42:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:42:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:42:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 64 states and 104 transitions. [2022-11-20 17:42:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2022-11-20 17:42:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 17:42:23,871 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:42:23,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:42:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:42:23,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:42:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:42:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:42:24,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:42:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:42:24,066 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2022-11-20 17:42:24,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:42:24 ImpRootNode [2022-11-20 17:42:24,100 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 17:42:24,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 17:42:24,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 17:42:24,101 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 17:42:24,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:10" (3/4) ... [2022-11-20 17:42:24,104 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 17:42:24,175 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 17:42:24,176 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 17:42:24,177 INFO L158 Benchmark]: Toolchain (without parser) took 14430.19ms. Allocated memory was 115.3MB in the beginning and 234.9MB in the end (delta: 119.5MB). Free memory was 53.3MB in the beginning and 163.6MB in the end (delta: -110.2MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,191 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 115.3MB. Free memory was 80.6MB in the beginning and 80.4MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:42:24,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.84ms. Allocated memory is still 115.3MB. Free memory was 53.1MB in the beginning and 43.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.03ms. Allocated memory is still 115.3MB. Free memory was 43.5MB in the beginning and 42.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,194 INFO L158 Benchmark]: Boogie Preprocessor took 64.61ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 42.0MB in the beginning and 133.8MB in the end (delta: -91.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,194 INFO L158 Benchmark]: RCFGBuilder took 500.45ms. Allocated memory is still 161.5MB. Free memory was 133.7MB in the beginning and 122.2MB in the end (delta: 11.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,195 INFO L158 Benchmark]: CodeCheck took 13495.04ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 122.2MB in the beginning and 165.6MB in the end (delta: -43.3MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,196 INFO L158 Benchmark]: Witness Printer took 74.94ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 163.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:42:24,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 25 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 13.4s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 430 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 257 mSDsluCounter, 234 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 691 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2178 IncrementalHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 691 mSolverCounterUnsat, 210 mSDtfsCounter, 2178 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1413 GetRequests, 1207 SyntacticMatches, 14 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15680 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 540 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 5/36 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 10]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int *pp = malloc(sizeof(int)); [L24] int *qq = malloc(sizeof(int)); [L26] *pp = __VERIFIER_nondet_int() [L27] *qq = __VERIFIER_nondet_int() [L28] EXPR \read(*qq) VAL [\read(*qq)=2, pp={24534:0}, qq={-8117:0}] [L28] COND TRUE *qq > 1 [L29] EXPR \read(*qq) [L29] *pp = *qq [L30] *qq = -1 [L31] EXPR \read(*pp) VAL [\read(*pp)=2, pp={24534:0}, qq={-8117:0}] [L31] CALL rec(pp,*pp) VAL [\old(i)=2, op={24534:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=2, i=2, ip={-8114:0}, op={24534:0}, op={24534:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=1, op={-8114:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=1, i=1, ip={-8115:0}, op={-8114:0}, op={-8114:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=0, op={-8115:0}] [L9] COND FALSE !(i < 0) [L13] int *ip = malloc(sizeof(int)); [L14] *ip = __VERIFIER_nondet_int() [L16] EXPR i-1 VAL [\old(i)=0, i=0, ip={-8116:0}, op={-8115:0}, op={-8115:0}] [L16] CALL rec(ip,i-1) VAL [\old(i)=-1, op={-8116:0}] [L9] COND TRUE i < 0 [L10] EXPR \read(*op) [L10] (*op)-- VAL [(*op)--=-2147483648, \old(i)=-1, \read(*op)=-2147483648, i=-1, op={-8116:0}, op={-8116:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 115.3MB. Free memory was 80.6MB in the beginning and 80.4MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.84ms. Allocated memory is still 115.3MB. Free memory was 53.1MB in the beginning and 43.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.03ms. Allocated memory is still 115.3MB. Free memory was 43.5MB in the beginning and 42.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.61ms. Allocated memory was 115.3MB in the beginning and 161.5MB in the end (delta: 46.1MB). Free memory was 42.0MB in the beginning and 133.8MB in the end (delta: -91.7MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * RCFGBuilder took 500.45ms. Allocated memory is still 161.5MB. Free memory was 133.7MB in the beginning and 122.2MB in the end (delta: 11.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * CodeCheck took 13495.04ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 122.2MB in the beginning and 165.6MB in the end (delta: -43.3MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 74.94ms. Allocated memory is still 234.9MB. Free memory was 165.6MB in the beginning and 163.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-11-20 17:42:24,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab138096-5d53-4c9d-86ab-d06296ca6762/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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)