./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_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_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:27,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:27,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:12:27,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:27,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:27,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:27,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:27,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:27,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:27,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:27,729 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:27,730 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:27,730 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:27,731 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:12:27,731 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:27,732 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:27,732 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:12:27,733 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:12:27,733 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:27,734 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:12:27,734 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:12:27,735 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:12:27,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:27,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:27,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:12:27,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:27,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:27,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:27,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:27,739 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:12:27,740 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:12:27,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:27,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:27,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:27,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:27,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:27,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:27,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:27,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:27,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:27,744 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:12:27,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:12:27,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:27,745 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:27,745 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:27,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:27,746 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 [2023-11-23 21:12:27,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:28,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:28,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:28,031 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:28,031 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:28,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-23 21:12:31,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:31,936 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:31,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-23 21:12:31,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data/09fd32ec2/44e189d782ce4b6a995c742c005745d0/FLAG12a487956 [2023-11-23 21:12:31,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data/09fd32ec2/44e189d782ce4b6a995c742c005745d0 [2023-11-23 21:12:31,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:32,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:32,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:32,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:32,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:32,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:31" (1/1) ... [2023-11-23 21:12:32,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24de5ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:32, skipping insertion in model container [2023-11-23 21:12:32,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:31" (1/1) ... [2023-11-23 21:12:32,090 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:32,442 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:12:32,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:32,991 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:33,036 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:12:33,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:33,228 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:33,228 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:33,229 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:33,229 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:33,229 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:33,229 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:33,237 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:33,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33 WrapperNode [2023-11-23 21:12:33,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:33,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:33,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:33,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:33,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,331 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-23 21:12:33,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:33,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:33,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:33,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:33,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:33,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:33,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:33,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:33,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (1/1) ... [2023-11-23 21:12:33,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:33,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:33,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:33,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 21:12:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 21:12:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 21:12:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:12:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:12:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:12:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:12:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:12:33,664 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:33,666 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:33,781 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:33,843 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:33,844 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:12:33,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:33 BoogieIcfgContainer [2023-11-23 21:12:33,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:33,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:33,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:33,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:33,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:31" (1/3) ... [2023-11-23 21:12:33,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685fc786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:33, skipping insertion in model container [2023-11-23 21:12:33,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:33" (2/3) ... [2023-11-23 21:12:33,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685fc786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:33, skipping insertion in model container [2023-11-23 21:12:33,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:33" (3/3) ... [2023-11-23 21:12:33,858 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-23 21:12:33,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:33,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:12:33,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:33,930 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@25104b34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:33,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:12:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:12:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:12:33,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:33,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:33,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-23 21:12:33,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash -719670172, now seen corresponding path program 1 times [2023-11-23 21:12:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:12:33,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950684791] [2023-11-23 21:12:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:12:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:34,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:12:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:34,226 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:12:34,228 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:12:34,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-23 21:12:34,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-23 21:12:34,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:12:34,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:12:34,243 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:12:34,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:12:34 BoogieIcfgContainer [2023-11-23 21:12:34,286 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:12:34,288 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:12:34,288 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:12:34,288 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:12:34,289 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:33" (3/4) ... [2023-11-23 21:12:34,291 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:12:34,292 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:12:34,294 INFO L158 Benchmark]: Toolchain (without parser) took 2292.18ms. Allocated memory is still 138.4MB. Free memory was 92.6MB in the beginning and 77.9MB in the end (delta: 14.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,294 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:34,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1233.74ms. Allocated memory is still 138.4MB. Free memory was 92.6MB in the beginning and 67.8MB in the end (delta: 24.8MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.05ms. Allocated memory is still 138.4MB. Free memory was 67.8MB in the beginning and 65.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,302 INFO L158 Benchmark]: Boogie Preprocessor took 59.79ms. Allocated memory is still 138.4MB. Free memory was 65.1MB in the beginning and 63.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,303 INFO L158 Benchmark]: RCFGBuilder took 456.50ms. Allocated memory is still 138.4MB. Free memory was 63.6MB in the beginning and 95.3MB in the end (delta: -31.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,304 INFO L158 Benchmark]: TraceAbstraction took 434.22ms. Allocated memory is still 138.4MB. Free memory was 94.6MB in the beginning and 77.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,305 INFO L158 Benchmark]: Witness Printer took 4.88ms. Allocated memory is still 138.4MB. Free memory was 77.9MB in the beginning and 77.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:12:34,313 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1233.74ms. Allocated memory is still 138.4MB. Free memory was 92.6MB in the beginning and 67.8MB in the end (delta: 24.8MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.05ms. Allocated memory is still 138.4MB. Free memory was 67.8MB in the beginning and 65.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.79ms. Allocated memory is still 138.4MB. Free memory was 65.1MB in the beginning and 63.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.50ms. Allocated memory is still 138.4MB. Free memory was 63.6MB in the beginning and 95.3MB in the end (delta: -31.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 434.22ms. Allocated memory is still 138.4MB. Free memory was 94.6MB in the beginning and 77.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.88ms. Allocated memory is still 138.4MB. Free memory was 77.9MB in the beginning and 77.9MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: 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); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, 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) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_22_bad() [L1552] int data; [L1553] data = 0 [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."); } } [L1565] CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:12:34,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:12:37,077 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:12:37,205 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-23 21:12:37,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:12:37,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:12:37,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:12:37,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:12:37,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:12:37,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:12:37,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:12:37,269 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:12:37,270 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:12:37,270 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:12:37,272 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:12:37,272 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:12:37,273 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:12:37,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:12:37,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:12:37,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:12:37,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:12:37,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:12:37,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:12:37,277 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:12:37,277 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:12:37,278 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:12:37,278 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:12:37,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:12:37,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:12:37,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:12:37,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:12:37,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:12:37,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:12:37,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:12:37,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:37,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:12:37,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:12:37,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:12:37,283 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:12:37,283 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:37,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:12:37,285 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:12:37,285 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:12:37,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:12:37,286 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_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 630aed2d3e1573298ea1fe3f5f3e9eb882822ead2780a649e85bb29b7cc2f367 [2023-11-23 21:12:37,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:12:37,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:12:37,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:12:37,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:12:37,815 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:12:37,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-23 21:12:41,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:12:41,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:12:41,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-23 21:12:41,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data/556e1164d/aae123811c604c848902ab20961bd7f4/FLAG8d402c912 [2023-11-23 21:12:41,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/data/556e1164d/aae123811c604c848902ab20961bd7f4 [2023-11-23 21:12:41,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:12:41,598 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:12:41,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:41,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:12:41,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:12:41,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75146c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:41, skipping insertion in model container [2023-11-23 21:12:41,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:41" (1/1) ... [2023-11-23 21:12:41,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:12:42,253 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:12:42,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:42,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:12:43,018 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:12:43,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:12:43,302 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:43,303 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:43,304 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:43,304 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:43,304 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:43,305 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:12:43,314 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:12:43,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43 WrapperNode [2023-11-23 21:12:43,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:12:43,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:43,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:12:43,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:12:43,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,444 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-23 21:12:43,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:12:43,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:12:43,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:12:43,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:12:43,459 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:12:43,534 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:12:43,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:12:43,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:12:43,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (1/1) ... [2023-11-23 21:12:43,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:12:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:12:43,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:12:43,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:12:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 21:12:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 21:12:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 21:12:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:12:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:12:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:12:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:12:43,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:12:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:12:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:12:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 21:12:43,841 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:12:43,844 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:12:44,028 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:12:44,092 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:12:44,092 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:12:44,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:44 BoogieIcfgContainer [2023-11-23 21:12:44,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:12:44,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:12:44,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:12:44,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:12:44,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:41" (1/3) ... [2023-11-23 21:12:44,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729333d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:44, skipping insertion in model container [2023-11-23 21:12:44,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:43" (2/3) ... [2023-11-23 21:12:44,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729333d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:44, skipping insertion in model container [2023-11-23 21:12:44,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:44" (3/3) ... [2023-11-23 21:12:44,103 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_22_bad.i [2023-11-23 21:12:44,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:12:44,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:12:44,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:12:44,185 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@42794fba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:12:44,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:12:44,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:12:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:12:44,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:44,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:44,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-23 21:12:44,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash 77672594, now seen corresponding path program 1 times [2023-11-23 21:12:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7760451] [2023-11-23 21:12:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:44,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:44,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:12:44,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:12:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:44,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:12:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:12:44,621 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 21:12:44,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:12:44,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-23 21:12:44,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-23 21:12:44,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:44,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:44,839 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:12:44,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:12:44,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:12:44 BoogieIcfgContainer [2023-11-23 21:12:44,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:12:44,910 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:12:44,911 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:12:44,911 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:12:44,911 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:44" (3/4) ... [2023-11-23 21:12:44,914 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:12:44,916 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:12:44,917 INFO L158 Benchmark]: Toolchain (without parser) took 3318.70ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.6MB in the beginning and 64.4MB in the end (delta: -13.8MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-23 21:12:44,918 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:44,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1716.88ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.4MB in the beginning and 46.8MB in the end (delta: 3.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2023-11-23 21:12:44,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.31ms. Allocated memory is still 100.7MB. Free memory was 46.8MB in the beginning and 72.3MB in the end (delta: -25.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-11-23 21:12:44,929 INFO L158 Benchmark]: Boogie Preprocessor took 86.36ms. Allocated memory is still 100.7MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:12:44,931 INFO L158 Benchmark]: RCFGBuilder took 559.48ms. Allocated memory is still 100.7MB. Free memory was 70.2MB in the beginning and 53.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:12:44,932 INFO L158 Benchmark]: TraceAbstraction took 810.52ms. Allocated memory is still 100.7MB. Free memory was 52.9MB in the beginning and 65.0MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:44,934 INFO L158 Benchmark]: Witness Printer took 5.62ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 64.4MB in the end (delta: 660.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:12:44,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1716.88ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.4MB in the beginning and 46.8MB in the end (delta: 3.6MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 127.31ms. Allocated memory is still 100.7MB. Free memory was 46.8MB in the beginning and 72.3MB in the end (delta: -25.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.36ms. Allocated memory is still 100.7MB. Free memory was 72.3MB in the beginning and 70.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 559.48ms. Allocated memory is still 100.7MB. Free memory was 70.2MB in the beginning and 53.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 810.52ms. Allocated memory is still 100.7MB. Free memory was 52.9MB in the beginning and 65.0MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.62ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 64.4MB in the end (delta: 660.5kB). There was no memory consumed. 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 - UnprovableResult [Line: 1582]: 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); [L1548] int CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, 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) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_22_bad() [L1552] int data; [L1553] data = 0 [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."); } } [L1565] CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=19occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:12:44,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e560792-5f34-4e31-ac56-17209a5903b4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample