./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex7.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0d3816d20b09287bda3e24c2cd658f2c5a0a81b00ac7774c605ed28b4cd6301d --- 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-38b53e6 [2022-11-25 17:00:22,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:00:22,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:00:22,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:00:22,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:00:22,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:00:22,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:00:22,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:00:22,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:00:22,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:00:22,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:00:22,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:00:22,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:00:22,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:00:22,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:00:22,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:00:22,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:00:22,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:00:22,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:00:22,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:00:22,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:00:22,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:00:22,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:00:22,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:00:22,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:00:22,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:00:22,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:00:22,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:00:22,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:00:22,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:00:22,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:00:22,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:00:22,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:00:22,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:00:22,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:00:22,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:00:22,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:00:22,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:00:22,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:00:22,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:00:22,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:00:22,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:00:22,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:00:22,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:00:22,598 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:00:22,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:00:22,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:00:22,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:00:22,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:00:22,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:00:22,601 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:00:22,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:00:22,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:00:22,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:00:22,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:00:22,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:00:22,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:00:22,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:00:22,604 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:00:22,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:00:22,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:00:22,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:00:22,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:00:22,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:00:22,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:00:22,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:00:22,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:00:22,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:00:22,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:00:22,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:00:22,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:00:22,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:00:22,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:00:22,608 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:00:22,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:00:22,609 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d3816d20b09287bda3e24c2cd658f2c5a0a81b00ac7774c605ed28b4cd6301d [2022-11-25 17:00:22,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:00:22,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:00:22,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:00:22,953 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:00:22,953 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:00:22,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex7.i [2022-11-25 17:00:26,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:00:26,807 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:00:26,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex7.i [2022-11-25 17:00:26,815 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/data/f7d10040f/49999e7af5344fc2999cae7a7953164c/FLAG0e8f2f223 [2022-11-25 17:00:26,832 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/data/f7d10040f/49999e7af5344fc2999cae7a7953164c [2022-11-25 17:00:26,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:00:26,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:00:26,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:00:26,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:00:26,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:00:26,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:00:26" (1/1) ... [2022-11-25 17:00:26,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c84474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:26, skipping insertion in model container [2022-11-25 17:00:26,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:00:26" (1/1) ... [2022-11-25 17:00:26,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:00:26,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:00:27,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:00:27,063 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:00:27,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:00:27,097 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:00:27,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27 WrapperNode [2022-11-25 17:00:27,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:00:27,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:00:27,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:00:27,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:00:27,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,136 INFO L138 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-25 17:00:27,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:00:27,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:00:27,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:00:27,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:00:27,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:00:27,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:00:27,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:00:27,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:00:27,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (1/1) ... [2022-11-25 17:00:27,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:00:27,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:00:27,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:00:27,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:00:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:00:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:00:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-25 17:00:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-25 17:00:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-11-25 17:00:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-11-25 17:00:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:00:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:00:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:00:27,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:00:27,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:00:27,355 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:00:27,662 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:00:27,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:00:27,669 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:00:27,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:00:27 BoogieIcfgContainer [2022-11-25 17:00:27,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:00:27,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:00:27,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:00:27,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:00:27,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:00:26" (1/3) ... [2022-11-25 17:00:27,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1ca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:00:27, skipping insertion in model container [2022-11-25 17:00:27,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:00:27" (2/3) ... [2022-11-25 17:00:27,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1ca01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:00:27, skipping insertion in model container [2022-11-25 17:00:27,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:00:27" (3/3) ... [2022-11-25 17:00:27,697 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex7.i [2022-11-25 17:00:27,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:00:27,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 17:00:27,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:00:27,866 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=PETRI_NET, 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;@69bd8e8e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:00:27,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 17:00:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 states have internal predecessors, (18), 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) [2022-11-25 17:00:27,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 17:00:27,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:00:27,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:00:27,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:00:27,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:00:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash 45876219, now seen corresponding path program 1 times [2022-11-25 17:00:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:00:27,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927004911] [2022-11-25 17:00:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:00:27,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:00:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:28,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:00:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:00:28,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:00:28,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:00:28,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-25 17:00:28,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-25 17:00:28,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-25 17:00:28,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-25 17:00:28,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:00:28,282 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 17:00:28,289 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:00:28,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:00:28 BoogieIcfgContainer [2022-11-25 17:00:28,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:00:28,333 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:00:28,333 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:00:28,334 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:00:28,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:00:27" (3/4) ... [2022-11-25 17:00:28,337 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:00:28,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:00:28,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:00:28,413 INFO L158 Benchmark]: Toolchain (without parser) took 1575.91ms. Allocated memory is still 146.8MB. Free memory was 109.1MB in the beginning and 67.9MB in the end (delta: 41.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-25 17:00:28,414 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:00:28,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.55ms. Allocated memory is still 146.8MB. Free memory was 109.1MB in the beginning and 99.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:00:28,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.95ms. Allocated memory is still 146.8MB. Free memory was 99.5MB in the beginning and 98.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:00:28,419 INFO L158 Benchmark]: Boogie Preprocessor took 29.19ms. Allocated memory is still 146.8MB. Free memory was 97.9MB in the beginning and 96.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:00:28,423 INFO L158 Benchmark]: RCFGBuilder took 510.69ms. Allocated memory is still 146.8MB. Free memory was 96.9MB in the beginning and 85.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:00:28,424 INFO L158 Benchmark]: TraceAbstraction took 650.71ms. Allocated memory is still 146.8MB. Free memory was 84.9MB in the beginning and 69.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:00:28,425 INFO L158 Benchmark]: Witness Printer took 78.02ms. Allocated memory is still 146.8MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:00:28,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory is still 90.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.55ms. Allocated memory is still 146.8MB. Free memory was 109.1MB in the beginning and 99.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.95ms. Allocated memory is still 146.8MB. Free memory was 99.5MB in the beginning and 98.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.19ms. Allocated memory is still 146.8MB. Free memory was 97.9MB in the beginning and 96.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 510.69ms. Allocated memory is still 146.8MB. Free memory was 96.9MB in the beginning and 85.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 650.71ms. Allocated memory is still 146.8MB. Free memory was 84.9MB in the beginning and 69.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 78.02ms. Allocated memory is still 146.8MB. Free memory was 69.6MB in the beginning and 67.9MB in the end (delta: 1.8MB). 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: [L37] int *p1 = malloc(sizeof(int)); [L38] int *p2 = malloc(sizeof(int)); [L40] *p1 = __VERIFIER_nondet_int() [L41] *p2 = __VERIFIER_nondet_int() [L43] CALL f(p1,p2) VAL [p={-3:0}, q={-2:0}] [L13] EXPR \read(*p) [L13] EXPR \read(*q) VAL [\read(*p)=-2147483648, \read(*q)=-1, p={-3:0}, p={-3:0}, q={-2:0}, q={-2:0}] [L13] *p + *q VAL [\read(*p)=-2147483648, \read(*q)=-1, p={-3:0}, p={-3:0}, 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=23occurred 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, 0.1s 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! [2022-11-25 17:00:28,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5571fd26-ff4a-4a82-a782-2ebaee6a2090/bin/uautomizer-ZsLfNo2U6R/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)