./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:27:14,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:27:14,429 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:27:14,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:27:14,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:27:14,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:27:14,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:27:14,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:27:14,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:27:14,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:27:14,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:27:14,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:27:14,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:27:14,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:27:14,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:27:14,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:27:14,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:27:14,500 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:27:14,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:27:14,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:27:14,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:27:14,503 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:27:14,503 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:27:14,504 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:27:14,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:27:14,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:14,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:27:14,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:27:14,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:27:14,507 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:27:14,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:27:14,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:27:14,508 INFO L153 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_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 [2023-11-23 20:27:14,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:27:14,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:27:14,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:27:14,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:27:14,903 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:27:14,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2023-11-23 20:27:18,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:27:18,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:27:18,576 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2023-11-23 20:27:18,622 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data/4198cd8db/353e705d25f1499089a4c5d8cf60ac7d/FLAGa0f06c0c3 [2023-11-23 20:27:18,645 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data/4198cd8db/353e705d25f1499089a4c5d8cf60ac7d [2023-11-23 20:27:18,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:27:18,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:27:18,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:27:18,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:27:18,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:27:18,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:27:18" (1/1) ... [2023-11-23 20:27:18,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9f5f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:18, skipping insertion in model container [2023-11-23 20:27:18,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:27:18" (1/1) ... [2023-11-23 20:27:18,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:27:19,224 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:27:20,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:27:20,117 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:27:20,144 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:27:20,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:27:20,400 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:20,401 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:20,401 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:20,401 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:20,401 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:20,402 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:20,410 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:27:20,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20 WrapperNode [2023-11-23 20:27:20,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:27:20,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:27:20,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:27:20,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:27:20,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,569 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-23 20:27:20,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:27:20,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:27:20,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:27:20,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:27:20,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,614 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,620 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:27:20,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:27:20,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:27:20,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:27:20,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:20" (1/1) ... [2023-11-23 20:27:20,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:20,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:27:20,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:27:20,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:27:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:27:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:27:20,743 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:27:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:27:20,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:27:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:27:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:27:20,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:27:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:27:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:27:20,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:27:20,980 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:27:20,982 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:27:21,165 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:27:21,206 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:27:21,207 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:27:21,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:21 BoogieIcfgContainer [2023-11-23 20:27:21,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:27:21,210 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:27:21,210 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:27:21,231 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:27:21,231 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:21" (1/1) ... [2023-11-23 20:27:21,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:27:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:27:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-23 20:27:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-23 20:27:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:27:21,335 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:27:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:27:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:27:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:27:21,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:27:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 21 transitions. [2023-11-23 20:27:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-23 20:27:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:27:21,773 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:27:21,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:27:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:21,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:27:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:21,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:27:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:21,966 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:27:22,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:27:22 ImpRootNode [2023-11-23 20:27:22,017 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:27:22,018 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:27:22,019 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:27:22,019 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:27:22,020 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:21" (3/4) ... [2023-11-23 20:27:22,026 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:27:22,027 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:27:22,028 INFO L158 Benchmark]: Toolchain (without parser) took 3372.70ms. Allocated memory is still 165.7MB. Free memory was 131.7MB in the beginning and 85.8MB in the end (delta: 45.9MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2023-11-23 20:27:22,030 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 125.8MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:22,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1753.58ms. Allocated memory is still 165.7MB. Free memory was 131.7MB in the beginning and 126.5MB in the end (delta: 5.2MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2023-11-23 20:27:22,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 155.89ms. Allocated memory is still 165.7MB. Free memory was 126.5MB in the beginning and 130.0MB in the end (delta: -3.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-11-23 20:27:22,034 INFO L158 Benchmark]: Boogie Preprocessor took 69.16ms. Allocated memory is still 165.7MB. Free memory was 130.0MB in the beginning and 128.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:22,036 INFO L158 Benchmark]: RCFGBuilder took 568.61ms. Allocated memory is still 165.7MB. Free memory was 127.9MB in the beginning and 113.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:27:22,037 INFO L158 Benchmark]: CodeCheck took 807.72ms. Allocated memory is still 165.7MB. Free memory was 113.3MB in the beginning and 85.8MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 20:27:22,043 INFO L158 Benchmark]: Witness Printer took 9.02ms. Allocated memory is still 165.7MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:22,052 INFO L338 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 15 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible 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); [L1578] CALL 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, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_09_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE \read(GLOBAL_CONST_TRUE) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE \read(GLOBAL_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 125.8MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1753.58ms. Allocated memory is still 165.7MB. Free memory was 131.7MB in the beginning and 126.5MB in the end (delta: 5.2MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 155.89ms. Allocated memory is still 165.7MB. Free memory was 126.5MB in the beginning and 130.0MB in the end (delta: -3.4MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.16ms. Allocated memory is still 165.7MB. Free memory was 130.0MB in the beginning and 128.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 568.61ms. Allocated memory is still 165.7MB. Free memory was 127.9MB in the beginning and 113.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 807.72ms. Allocated memory is still 165.7MB. Free memory was 113.3MB in the beginning and 85.8MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 9.02ms. Allocated memory is still 165.7MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:27:22,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:27:25,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:27:25,316 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:27:25,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:27:25,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:27:25,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:27:25,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:27:25,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:27:25,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:27:25,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:27:25,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:27:25,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:27:25,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:27:25,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:27:25,393 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:27:25,393 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:27:25,394 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:27:25,394 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:27:25,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:27:25,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:27:25,396 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:27:25,397 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:27:25,398 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:27:25,398 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:27:25,399 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:27:25,400 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:27:25,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:27:25,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:25,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:27:25,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:27:25,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:27:25,404 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:27:25,405 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:27:25,405 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:27:25,406 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:27:25,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:27:25,406 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba7498218d229ce55ff08f10e054cbf5ca2bbc040b3cb772c5bb6a6b7f724ee8 [2023-11-23 20:27:25,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:27:25,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:27:25,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:27:25,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:27:25,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:27:25,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2023-11-23 20:27:29,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:27:29,939 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:27:29,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_09_bad.i [2023-11-23 20:27:29,982 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data/977e70a6c/c9641a5239a5459da21bd68f1e492917/FLAG6fd910f23 [2023-11-23 20:27:30,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/data/977e70a6c/c9641a5239a5459da21bd68f1e492917 [2023-11-23 20:27:30,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:27:30,010 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:27:30,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:27:30,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:27:30,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:27:30,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:27:30" (1/1) ... [2023-11-23 20:27:30,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ad5c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:30, skipping insertion in model container [2023-11-23 20:27:30,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:27:30" (1/1) ... [2023-11-23 20:27:30,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:27:30,591 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:27:31,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:27:31,349 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:27:31,388 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:27:31,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:27:31,712 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:31,712 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:31,712 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:31,713 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:31,713 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:31,713 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:27:31,722 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:27:31,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31 WrapperNode [2023-11-23 20:27:31,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:27:31,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:27:31,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:27:31,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:27:31,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,820 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-23 20:27:31,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:27:31,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:27:31,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:27:31,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:27:31,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,850 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:27:31,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:27:31,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:27:31,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:27:31,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:27:31" (1/1) ... [2023-11-23 20:27:31,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:27:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:27:31,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:27:31,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:27:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:27:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:27:31,972 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:27:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:27:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:27:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:27:31,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:27:31,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:27:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:27:31,974 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:27:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:27:32,201 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:27:32,204 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:27:32,450 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:27:32,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:27:32,533 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:27:32,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:32 BoogieIcfgContainer [2023-11-23 20:27:32,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:27:32,536 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:27:32,536 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:27:32,554 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:27:32,555 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:32" (1/1) ... [2023-11-23 20:27:32,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:27:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:27:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 18 states and 22 transitions. [2023-11-23 20:27:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-11-23 20:27:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:27:32,662 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:27:32,663 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:27:32,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:27:32,666 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:27:32,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:27:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:27:32,807 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-11-23 20:27:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:27:32,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:27:32,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:27:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:27:32,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:27:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:27:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 19 states and 23 transitions. [2023-11-23 20:27:32,950 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-11-23 20:27:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:27:32,951 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:27:32,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:27:32,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:27:32,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:27:32,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-11-23 20:27:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:33,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:27:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:33,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:27:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:27:33,430 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-11-23 20:27:33,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:27:33,433 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:27:33,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:27:33 ImpRootNode [2023-11-23 20:27:33,474 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:27:33,475 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:27:33,475 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:27:33,475 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:27:33,476 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:27:32" (3/4) ... [2023-11-23 20:27:33,478 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:27:33,479 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:27:33,480 INFO L158 Benchmark]: Toolchain (without parser) took 3469.22ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 52.6MB in the beginning and 46.7MB in the end (delta: 5.9MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2023-11-23 20:27:33,480 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:33,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1709.33ms. Allocated memory is still 79.7MB. Free memory was 52.6MB in the beginning and 29.5MB in the end (delta: 23.1MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2023-11-23 20:27:33,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.86ms. Allocated memory is still 79.7MB. Free memory was 29.5MB in the beginning and 50.4MB in the end (delta: -20.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-11-23 20:27:33,483 INFO L158 Benchmark]: Boogie Preprocessor took 43.03ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 48.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:33,490 INFO L158 Benchmark]: RCFGBuilder took 669.52ms. Allocated memory is still 79.7MB. Free memory was 48.7MB in the beginning and 31.5MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:27:33,490 INFO L158 Benchmark]: CodeCheck took 938.41ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 31.5MB in the beginning and 47.3MB in the end (delta: -15.8MB). Peak memory consumption was 881.9kB. Max. memory is 16.1GB. [2023-11-23 20:27:33,492 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 96.5MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:27:33,501 INFO L338 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible 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); [L1578] CALL 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, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1578] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_09_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE \read(GLOBAL_CONST_TRUE) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1566] COND TRUE \read(GLOBAL_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 62.9MB. Free memory was 39.0MB in the beginning and 38.9MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1709.33ms. Allocated memory is still 79.7MB. Free memory was 52.6MB in the beginning and 29.5MB in the end (delta: 23.1MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.86ms. Allocated memory is still 79.7MB. Free memory was 29.5MB in the beginning and 50.4MB in the end (delta: -20.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.03ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 48.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 669.52ms. Allocated memory is still 79.7MB. Free memory was 48.7MB in the beginning and 31.5MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 938.41ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 31.5MB in the beginning and 47.3MB in the end (delta: -15.8MB). Peak memory consumption was 881.9kB. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 96.5MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:27:33,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_600919db-0843-44af-ae4c-f14f862e33e0/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample