./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ --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 7565a7437b9d20454e209c76ad0b654b2f87c4541485d2a2bf11964b00adcda2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:29,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:29,540 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:19:29,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:29,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:29,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:29,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:29,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:29,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:29,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:29,627 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:29,628 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:29,628 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:29,630 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:19:29,630 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:29,631 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:29,631 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:19:29,632 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:19:29,632 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:29,632 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:19:29,633 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:19:29,633 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:19:29,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:29,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:29,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:19:29,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:29,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:29,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:29,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:29,637 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:19:29,638 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:29,639 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:29,639 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:29,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:29,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:29,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:29,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:29,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:29,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:19:29,640 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:19:29,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:19:29,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:19:29,641 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:29,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:29,642 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_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7565a7437b9d20454e209c76ad0b654b2f87c4541485d2a2bf11964b00adcda2 [2023-11-19 05:19:29,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:29,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:29,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:29,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:30,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:30,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i [2023-11-19 05:19:33,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:33,762 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:33,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i [2023-11-19 05:19:33,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data/24436da9c/b2aebbd9f31b46f694f8d5e0ba5ae16c/FLAG89a954be8 [2023-11-19 05:19:33,804 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data/24436da9c/b2aebbd9f31b46f694f8d5e0ba5ae16c [2023-11-19 05:19:33,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:33,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:33,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:33,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:33,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:33,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:33" (1/1) ... [2023-11-19 05:19:33,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58876c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:33, skipping insertion in model container [2023-11-19 05:19:33,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:33" (1/1) ... [2023-11-19 05:19:33,908 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:34,295 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:19:34,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:34,951 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:19:34,990 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:19:35,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:35,245 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:35,245 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:35,245 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:35,245 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:35,246 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:35,246 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:35,254 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:19:35,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35 WrapperNode [2023-11-19 05:19:35,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:35,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:35,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:19:35,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:19:35,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,325 INFO L138 Inliner]: procedures = 501, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-19 05:19:35,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:35,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:19:35,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:19:35,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:19:35,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:19:35,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:19:35,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:19:35,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:19:35,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (1/1) ... [2023-11-19 05:19:35,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:35,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:19:35,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:19:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 05:19:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 05:19:35,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:19:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:19:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:19:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:19:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:19:35,609 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:19:35,611 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:19:35,755 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:19:35,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:19:35,793 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:19:35,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:35 BoogieIcfgContainer [2023-11-19 05:19:35,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:19:35,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:19:35,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:19:35,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:19:35,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:19:33" (1/3) ... [2023-11-19 05:19:35,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546f6e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:35, skipping insertion in model container [2023-11-19 05:19:35,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:35" (2/3) ... [2023-11-19 05:19:35,806 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546f6e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:35, skipping insertion in model container [2023-11-19 05:19:35,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:35" (3/3) ... [2023-11-19 05:19:35,808 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i [2023-11-19 05:19:35,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:19:35,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:19:35,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:19:35,878 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;@74dcc071, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:19:35,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:19:35,881 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) [2023-11-19 05:19:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:19:35,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:35,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:35,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:19:35,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1767842661, now seen corresponding path program 1 times [2023-11-19 05:19:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:19:35,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193955185] [2023-11-19 05:19:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:35,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:19:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:19:36,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:19:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:19:36,239 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:19:36,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:19:36,242 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:19:36,244 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:19:36,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:19:36,253 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:19:36,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:19:36,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:19:36 BoogieIcfgContainer [2023-11-19 05:19:36,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:19:36,313 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:19:36,313 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:19:36,314 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:19:36,314 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:35" (3/4) ... [2023-11-19 05:19:36,316 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:19:36,317 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:19:36,319 INFO L158 Benchmark]: Toolchain (without parser) took 2509.46ms. Allocated memory is still 153.1MB. Free memory was 119.5MB in the beginning and 72.8MB in the end (delta: 46.7MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2023-11-19 05:19:36,319 INFO L158 Benchmark]: CDTParser took 1.47ms. Allocated memory is still 125.8MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:36,320 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1444.79ms. Allocated memory is still 153.1MB. Free memory was 119.1MB in the beginning and 113.5MB in the end (delta: 5.5MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2023-11-19 05:19:36,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.78ms. Allocated memory is still 153.1MB. Free memory was 113.5MB in the beginning and 110.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:19:36,326 INFO L158 Benchmark]: Boogie Preprocessor took 30.27ms. Allocated memory is still 153.1MB. Free memory was 110.5MB in the beginning and 108.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:19:36,327 INFO L158 Benchmark]: RCFGBuilder took 440.16ms. Allocated memory is still 153.1MB. Free memory was 108.5MB in the beginning and 93.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:19:36,327 INFO L158 Benchmark]: TraceAbstraction took 512.20ms. Allocated memory is still 153.1MB. Free memory was 91.7MB in the beginning and 72.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:19:36,328 INFO L158 Benchmark]: Witness Printer took 3.93ms. Allocated memory is still 153.1MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:36,334 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47ms. Allocated memory is still 125.8MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1444.79ms. Allocated memory is still 153.1MB. Free memory was 119.1MB in the beginning and 113.5MB in the end (delta: 5.5MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.78ms. Allocated memory is still 153.1MB. Free memory was 113.5MB in the beginning and 110.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.27ms. Allocated memory is still 153.1MB. Free memory was 110.5MB in the beginning and 108.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.16ms. Allocated memory is still 153.1MB. Free memory was 108.5MB in the beginning and 93.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 512.20ms. Allocated memory is still 153.1MB. Free memory was 91.7MB in the beginning and 72.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.93ms. Allocated memory is still 153.1MB. Free memory is still 72.8MB. 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: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741827}, argv={1073741829:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1578] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1580]: 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: 0.4s, 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 [2023-11-19 05:19:36,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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 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_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ --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 7565a7437b9d20454e209c76ad0b654b2f87c4541485d2a2bf11964b00adcda2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:39,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:39,176 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-19 05:19:39,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:39,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:39,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:39,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:39,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:39,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:39,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:39,213 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:39,213 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:39,214 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:39,214 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:39,215 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:39,215 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:39,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:39,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:39,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:39,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:39,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:39,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:39,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:19:39,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:19:39,220 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:19:39,220 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:19:39,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:39,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:39,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:39,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:39,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:19:39,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:39,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:39,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:39,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:39,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:19:39,224 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:19:39,224 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:39,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:19:39,225 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:39,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:39,225 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_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7565a7437b9d20454e209c76ad0b654b2f87c4541485d2a2bf11964b00adcda2 [2023-11-19 05:19:39,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:39,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:39,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:39,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:39,611 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:39,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i [2023-11-19 05:19:42,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:43,140 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:43,141 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i [2023-11-19 05:19:43,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data/4b958dfa9/4f12c84046c242e8bdf14f1b89268a1a/FLAGb612f0656 [2023-11-19 05:19:43,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/data/4b958dfa9/4f12c84046c242e8bdf14f1b89268a1a [2023-11-19 05:19:43,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:43,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:43,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:43,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:43,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:43,200 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:43" (1/1) ... [2023-11-19 05:19:43,202 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78911e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:43, skipping insertion in model container [2023-11-19 05:19:43,202 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:43" (1/1) ... [2023-11-19 05:19:43,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:43,839 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:19:44,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:44,637 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:19:44,655 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:44,694 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:19:44,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:44,763 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:19:44,793 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:19:44,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:45,043 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:45,044 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:45,044 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:45,044 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:45,044 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:45,044 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:19:45,052 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:19:45,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45 WrapperNode [2023-11-19 05:19:45,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:45,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:45,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:19:45,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:19:45,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,139 INFO L138 Inliner]: procedures = 506, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-11-19 05:19:45,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:45,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:19:45,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:19:45,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:19:45,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:19:45,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:19:45,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:19:45,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:19:45,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (1/1) ... [2023-11-19 05:19:45,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:45,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:19:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:19:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 05:19:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 05:19:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 05:19:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:19:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:19:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:19:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:19:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:19:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:19:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:19:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:19:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:19:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 05:19:45,456 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:19:45,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:19:45,724 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:19:45,736 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:19:45,737 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:19:45,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:45 BoogieIcfgContainer [2023-11-19 05:19:45,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:19:45,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:19:45,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:19:45,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:19:45,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:19:43" (1/3) ... [2023-11-19 05:19:45,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b26031f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:45, skipping insertion in model container [2023-11-19 05:19:45,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:45" (2/3) ... [2023-11-19 05:19:45,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b26031f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:45, skipping insertion in model container [2023-11-19 05:19:45,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:45" (3/3) ... [2023-11-19 05:19:45,755 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_64_bad.i [2023-11-19 05:19:45,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:19:45,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:19:45,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:19:45,843 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;@4e2693e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:19:45,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:19:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 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) [2023-11-19 05:19:45,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:19:45,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:45,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:45,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:19:45,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2023-11-19 05:19:45,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:45,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627629774] [2023-11-19 05:19:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:45,894 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 [2023-11-19 05:19:45,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:45,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:19:45,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:19:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:19:46,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:19:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:19:46,546 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 05:19:46,548 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:19:46,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:19:46,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:19:46,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:19:46,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:19:46,762 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:19:46,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:19:46,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:19:46 BoogieIcfgContainer [2023-11-19 05:19:46,825 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:19:46,828 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:19:46,828 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:19:46,828 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:19:46,829 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:45" (3/4) ... [2023-11-19 05:19:46,831 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:19:46,832 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:19:46,834 INFO L158 Benchmark]: Toolchain (without parser) took 3641.81ms. Allocated memory was 67.1MB in the beginning and 115.3MB in the end (delta: 48.2MB). Free memory was 32.5MB in the beginning and 74.3MB in the end (delta: -41.8MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-11-19 05:19:46,835 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 29.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:46,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1860.46ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 32.2MB in the beginning and 45.5MB in the end (delta: -13.2MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-11-19 05:19:46,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.45ms. Allocated memory is still 92.3MB. Free memory was 45.5MB in the beginning and 42.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:19:46,843 INFO L158 Benchmark]: Boogie Preprocessor took 39.37ms. Allocated memory is still 92.3MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:19:46,845 INFO L158 Benchmark]: RCFGBuilder took 562.02ms. Allocated memory is still 92.3MB. Free memory was 40.1MB in the beginning and 50.3MB in the end (delta: -10.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-11-19 05:19:46,847 INFO L158 Benchmark]: TraceAbstraction took 1080.80ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 49.3MB in the beginning and 75.0MB in the end (delta: -25.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:46,847 INFO L158 Benchmark]: Witness Printer took 4.80ms. Allocated memory is still 115.3MB. Free memory was 75.0MB in the beginning and 74.3MB in the end (delta: 676.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:19:46,859 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 29.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1860.46ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 32.2MB in the beginning and 45.5MB in the end (delta: -13.2MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.45ms. Allocated memory is still 92.3MB. Free memory was 45.5MB in the beginning and 42.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.37ms. Allocated memory is still 92.3MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.02ms. Allocated memory is still 92.3MB. Free memory was 40.1MB in the beginning and 50.3MB in the end (delta: -10.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1080.80ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 49.3MB in the beginning and 75.0MB in the end (delta: -25.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.80ms. Allocated memory is still 115.3MB. Free memory was 75.0MB in the beginning and 74.3MB in the end (delta: 676.8kB). 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: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] 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) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_multiply_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1578] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1580]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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=24occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 [2023-11-19 05:19:46,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6308a330-8b57-42e4-bfe6-bbc0ab2044a2/bin/utaipan-verify-t7M7D8N6sZ/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