./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c8a96ec157c824939823b5edff4d92b4281dc1fefd76977ad079ed81045d850a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:49:24,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:49:24,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-23 23:49:24,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:49:24,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:49:24,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:49:24,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:49:24,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:49:24,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:49:24,691 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:49:24,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:49:24,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:49:24,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:49:24,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:49:24,693 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:49:24,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:49:24,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:49:24,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:49:24,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:49:24,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:49:24,695 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:49:24,696 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:49:24,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:49:24,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:49:24,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:49:24,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:49:24,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:49:24,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:49:24,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:49:24,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:49:24,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:49:24,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:49:24,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:49:24,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:49:24,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:49:24,699 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> 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 -> c8a96ec157c824939823b5edff4d92b4281dc1fefd76977ad079ed81045d850a [2024-11-23 23:49:25,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:49:25,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:49:25,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:49:25,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:49:25,098 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:49:25,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_32_bad.i [2024-11-23 23:49:28,252 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/data/4e9d3bf25/4a2011948a4d44e2983aa7d8da996007/FLAG47a031a07 [2024-11-23 23:49:28,684 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:49:28,685 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_32_bad.i [2024-11-23 23:49:28,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/data/4e9d3bf25/4a2011948a4d44e2983aa7d8da996007/FLAG47a031a07 [2024-11-23 23:49:28,729 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/data/4e9d3bf25/4a2011948a4d44e2983aa7d8da996007 [2024-11-23 23:49:28,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:49:28,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:49:28,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:49:28,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:49:28,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:49:28,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:49:28" (1/1) ... [2024-11-23 23:49:28,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2c2946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:28, skipping insertion in model container [2024-11-23 23:49:28,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:49:28" (1/1) ... [2024-11-23 23:49:28,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:49:29,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:49:29,848 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:49:30,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:49:30,209 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:49:30,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30 WrapperNode [2024-11-23 23:49:30,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:49:30,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:49:30,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:49:30,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:49:30,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,304 INFO L138 Inliner]: procedures = 497, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2024-11-23 23:49:30,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:49:30,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:49:30,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:49:30,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:49:30,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,369 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-11-23 23:49:30,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,382 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:49:30,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:49:30,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:49:30,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:49:30,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (1/1) ... [2024-11-23 23:49:30,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:49:30,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:30,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:49:30,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:49:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 23:49:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 23:49:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:49:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:49:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:49:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:49:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:49:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:49:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:49:30,696 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:49:30,698 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:49:30,988 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-23 23:49:30,988 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:49:30,998 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:49:30,998 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:49:30,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:49:30 BoogieIcfgContainer [2024-11-23 23:49:30,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:49:31,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:49:31,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:49:31,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:49:31,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:49:28" (1/3) ... [2024-11-23 23:49:31,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a9e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:49:31, skipping insertion in model container [2024-11-23 23:49:31,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:49:30" (2/3) ... [2024-11-23 23:49:31,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a9e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:49:31, skipping insertion in model container [2024-11-23 23:49:31,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:49:30" (3/3) ... [2024-11-23 23:49:31,011 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_rand_sub_32_bad.i [2024-11-23 23:49:31,031 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:49:31,033 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_rand_sub_32_bad.i that has 2 procedures, 41 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 23:49:31,109 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:49:31,127 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bde0889, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:49:31,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 23:49:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.457142857142857) internal successors, (51), 37 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-23 23:49:31,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-23 23:49:31,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:31,143 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:31,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 23:49:31,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1571693812, now seen corresponding path program 1 times [2024-11-23 23:49:31,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052914043] [2024-11-23 23:49:31,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 23:49:31,413 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 23:49:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 23:49:31,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 23:49:31,549 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 23:49:31,554 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 23:49:31,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 23:49:31,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:49:31,566 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-23 23:49:31,608 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 23:49:31,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:49:31 BoogieIcfgContainer [2024-11-23 23:49:31,616 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 23:49:31,617 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 23:49:31,617 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 23:49:31,617 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 23:49:31,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:49:30" (3/4) ... [2024-11-23 23:49:31,618 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-23 23:49:31,717 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 5. [2024-11-23 23:49:31,775 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-23 23:49:31,775 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-23 23:49:31,775 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 23:49:31,777 INFO L158 Benchmark]: Toolchain (without parser) took 3040.81ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 84.0MB in the end (delta: 5.4MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2024-11-23 23:49:31,777 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:49:31,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1473.53ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 79.5MB in the end (delta: 9.7MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2024-11-23 23:49:31,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.34ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 76.3MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:49:31,779 INFO L158 Benchmark]: Boogie Preprocessor took 92.79ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 74.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:49:31,779 INFO L158 Benchmark]: RCFGBuilder took 596.88ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 58.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:49:31,779 INFO L158 Benchmark]: TraceAbstraction took 614.70ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 40.2MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 23:49:31,782 INFO L158 Benchmark]: Witness Printer took 158.72ms. Allocated memory is still 117.4MB. Free memory was 40.2MB in the beginning and 84.0MB in the end (delta: -43.8MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-11-23 23:49:31,784 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1473.53ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 79.5MB in the end (delta: 9.7MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.34ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 76.3MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 92.79ms. Allocated memory is still 117.4MB. Free memory was 76.3MB in the beginning and 74.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 596.88ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 58.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 614.70ms. Allocated memory is still 117.4MB. Free memory was 57.9MB in the beginning and 40.2MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 158.72ms. Allocated memory is still 117.4MB. Free memory was 40.2MB in the beginning and 84.0MB in the end (delta: -43.8MB). Peak memory consumption was 12.9MB. 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: 1562]: integer overflow possible integer overflow possible We found a FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_rand_sub_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, dataPtr1={3:0}, dataPtr2={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, dataPtr1={3:0}, dataPtr2={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, dataPtr1={3:0}, dataPtr2={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1557] *dataPtr1 = data [L1560] EXPR \read(*dataPtr2) [L1560] int data = *dataPtr2; [L1562] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1562]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 41 locations, 2 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=41occurred 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, 15 NumberOfCodeBlocks, 15 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-23 23:49:31,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84713010-fc0e-4dd7-b48c-46dc82c01815/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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)