./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for overflows
Using default analysis
Version 9bd2c7ff
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:47:26,493 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:47:26,570 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2023-11-19 07:47:26,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:47:26,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:47:26,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:47:26,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:47:26,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:47:26,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:47:26,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:47:26,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:47:26,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:47:26,611 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:47:26,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:47:26,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:47:26,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:47:26,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:47:26,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:47:26,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:47:26,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:47:26,615 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true
[2023-11-19 07:47:26,616 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:47:26,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:47:26,617 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:47:26,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:47:26,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:47:26,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:47:26,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:47:26,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:47:26,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:47:26,620 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:47:26,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:47:26,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:47:26,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:47:26,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:47:26,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:47:26,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:47:26,623 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:47:26,624 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f
[2023-11-19 07:47:26,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:47:26,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:47:26,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:47:26,929 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:47:26,930 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:47:26,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i
[2023-11-19 07:47:30,122 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:47:30,503 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:47:30,504 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i
[2023-11-19 07:47:30,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data/cb0e2db3b/74089fb21cda410b8adfa658a08d714f/FLAG4feb83f34
[2023-11-19 07:47:30,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data/cb0e2db3b/74089fb21cda410b8adfa658a08d714f
[2023-11-19 07:47:30,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:47:30,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:47:30,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:47:30,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:47:30,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:47:30,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:30" (1/1) ...
[2023-11-19 07:47:30,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238bc092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30, skipping insertion in model container
[2023-11-19 07:47:30,568 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:30" (1/1) ...
[2023-11-19 07:47:30,655 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:47:31,081 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:47:31,700 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:47:31,718 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:47:31,757 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:47:31,867 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:47:32,044 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:32,044 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:32,044 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:32,044 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:32,045 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:32,045 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:32,054 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:47:32,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32 WrapperNode
[2023-11-19 07:47:32,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:47:32,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:47:32,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:47:32,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:47:32,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,174 INFO L138 Inliner]: procedures = 502, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 59
[2023-11-19 07:47:32,175 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:47:32,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:47:32,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:47:32,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:47:32,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:47:32,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:47:32,211 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:47:32,211 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:47:32,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (1/1) ...
[2023-11-19 07:47:32,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:47:32,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:47:32,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:47:32,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:47:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure fgets
[2023-11-19 07:47:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure printLine
[2023-11-19 07:47:32,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-19 07:47:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:47:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int
[2023-11-19 07:47:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:47:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:47:32,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:47:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:47:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure time
[2023-11-19 07:47:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:47:32,526 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:47:32,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:47:32,680 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:47:32,688 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:47:32,688 INFO L302 CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-19 07:47:32,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:32 BoogieIcfgContainer
[2023-11-19 07:47:32,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:47:32,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:47:32,695 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:47:32,698 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:47:32,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:30" (1/3) ...
[2023-11-19 07:47:32,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7043de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:32, skipping insertion in model container
[2023-11-19 07:47:32,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:32" (2/3) ...
[2023-11-19 07:47:32,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7043de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:32, skipping insertion in model container
[2023-11-19 07:47:32,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:32" (3/3) ...
[2023-11-19 07:47:32,702 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_52_bad.i
[2023-11-19 07:47:32,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:47:32,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:47:32,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:47:32,783 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@797de3a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:47:32,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-19 07:47:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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 07:47:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-19 07:47:32,798 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:47:32,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:47:32,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-19 07:47:32,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times
[2023-11-19 07:47:32,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:47:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963420252]
[2023-11-19 07:47:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:32,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:47:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:32,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:47:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:33,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-11-19 07:47:33,049 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:47:33,050 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-19 07:47:33,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-19 07:47:33,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:47:33,058 INFO L445 BasicCegarLoop]: Path program histogram: [1]
[2023-11-19 07:47:33,063 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:47:33,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:33 BoogieIcfgContainer
[2023-11-19 07:47:33,088 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:47:33,089 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:47:33,089 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:47:33,089 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 07:47:33,090 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:32" (3/4) ...
[2023-11-19 07:47:33,092 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-11-19 07:47:33,093 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:47:33,095 INFO L158 Benchmark]: Toolchain (without parser) took 2542.82ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 101.3MB in the beginning and 101.3MB in the end (delta: 33.7kB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB.
[2023-11-19 07:47:33,095 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 151.0MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:47:33,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1503.40ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 100.8MB in the beginning and 135.9MB in the end (delta: -35.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB.
[2023-11-19 07:47:33,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.92ms. Allocated memory is still 203.4MB. Free memory was 135.9MB in the beginning and 132.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 07:47:33,097 INFO L158 Benchmark]: Boogie Preprocessor took 33.33ms. Allocated memory is still 203.4MB. Free memory was 132.7MB in the beginning and 131.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:47:33,098 INFO L158 Benchmark]: RCFGBuilder took 481.72ms. Allocated memory is still 203.4MB. Free memory was 131.7MB in the beginning and 118.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-11-19 07:47:33,098 INFO L158 Benchmark]: TraceAbstraction took 393.43ms. Allocated memory is still 203.4MB. Free memory was 118.1MB in the beginning and 101.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-11-19 07:47:33,099 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 203.4MB. Free memory was 101.3MB in the beginning and 101.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:47:33,102 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 151.0MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1503.40ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 100.8MB in the beginning and 135.9MB in the end (delta: -35.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 117.92ms. Allocated memory is still 203.4MB. Free memory was 135.9MB in the beginning and 132.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 33.33ms. Allocated memory is still 203.4MB. Free memory was 132.7MB in the beginning and 131.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 481.72ms. Allocated memory is still 203.4MB. Free memory was 131.7MB in the beginning and 118.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 393.43ms. Allocated memory is still 203.4MB. Free memory was 118.1MB in the beginning and 101.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Witness Printer took 4.48ms. Allocated memory is still 203.4MB. Free memory was 101.3MB in the beginning and 101.3MB in the end (delta: 2.7kB). 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 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)=1073741830, argc=1073741830, argv={1073741827:1073741825}, argv={1073741827:1073741825}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1]
[L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_52_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_predec_52b_badSink(data)
[L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_52c_badSink(data)
[L1582] --data
VAL [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, 24 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=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, 0.0s 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
[2023-11-19 07:47:33,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:47:35,911 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:47:36,020 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf
[2023-11-19 07:47:36,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:47:36,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:47:36,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty.
[2023-11-19 07:47:36,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:47:36,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:47:36,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:47:36,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:47:36,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:47:36,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:47:36,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:47:36,091 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:47:36,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:47:36,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:47:36,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:47:36,093 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:47:36,094 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:47:36,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:47:36,096 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-11-19 07:47:36,096 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2023-11-19 07:47:36,097 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true
[2023-11-19 07:47:36,097 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-19 07:47:36,098 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false
[2023-11-19 07:47:36,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:47:36,099 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:47:36,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:47:36,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:47:36,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:47:36,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:47:36,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:47:36,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:47:36,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:47:36,103 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF
[2023-11-19 07:47:36,104 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-11-19 07:47:36,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:47:36,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:47:36,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:47:36,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:47:36,106 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
[2023-11-19 07:47:36,107 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:47:36,107 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85414100125a1375df763d584646172151a5cac69d9244c33c07723f80f5128f
[2023-11-19 07:47:36,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:47:36,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:47:36,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:47:36,562 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:47:36,563 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:47:36,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i
[2023-11-19 07:47:39,737 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:47:40,310 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:47:40,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_52_bad.i
[2023-11-19 07:47:40,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data/ea0c6a044/55f4567849264c2d9eac1f6e091de432/FLAGa7e30d910
[2023-11-19 07:47:40,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/data/ea0c6a044/55f4567849264c2d9eac1f6e091de432
[2023-11-19 07:47:40,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:47:40,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:47:40,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:47:40,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:47:40,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:47:40,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:40" (1/1) ...
[2023-11-19 07:47:40,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec54020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:40, skipping insertion in model container
[2023-11-19 07:47:40,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:40" (1/1) ...
[2023-11-19 07:47:40,480 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:47:40,872 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:47:41,407 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:47:41,423 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:47:41,447 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16
[2023-11-19 07:47:41,514 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:47:41,734 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:41,734 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:41,735 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:41,735 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:41,735 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:41,735 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:47:41,743 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:47:41,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41 WrapperNode
[2023-11-19 07:47:41,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:47:41,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:47:41,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:47:41,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:47:41,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,841 INFO L138 Inliner]: procedures = 507, calls = 66, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58
[2023-11-19 07:47:41,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:47:41,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:47:41,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:47:41,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:47:41,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:47:41,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:47:41,884 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:47:41,884 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:47:41,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (1/1) ...
[2023-11-19 07:47:41,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:47:41,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:47:41,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:47:41,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:47:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure fgets
[2023-11-19 07:47:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure printLine
[2023-11-19 07:47:41,959 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine
[2023-11-19 07:47:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:47:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-19 07:47:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:47:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:47:41,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:47:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:47:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure time
[2023-11-19 07:47:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1
[2023-11-19 07:47:42,137 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:47:42,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:47:42,321 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:47:42,333 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:47:42,333 INFO L302 CfgBuilder]: Removed 0 assume(true) statements.
[2023-11-19 07:47:42,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:42 BoogieIcfgContainer
[2023-11-19 07:47:42,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:47:42,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:47:42,344 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:47:42,347 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:47:42,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:40" (1/3) ...
[2023-11-19 07:47:42,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6607555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:42, skipping insertion in model container
[2023-11-19 07:47:42,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:41" (2/3) ...
[2023-11-19 07:47:42,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6607555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:42, skipping insertion in model container
[2023-11-19 07:47:42,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:42" (3/3) ...
[2023-11-19 07:47:42,354 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_52_bad.i
[2023-11-19 07:47:42,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:47:42,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:47:42,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:47:42,441 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@5bdfac6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:47:42,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2023-11-19 07:47:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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 07:47:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-11-19 07:47:42,455 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:47:42,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:47:42,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] ===
[2023-11-19 07:47:42,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:47:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -391249206, now seen corresponding path program 1 times
[2023-11-19 07:47:42,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-11-19 07:47:42,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964924332]
[2023-11-19 07:47:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:47:42,481 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 07:47:42,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/mathsat
[2023-11-19 07:47:42,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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 07:47:42,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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 07:47:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:42,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 07:47:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 07:47:42,772 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2023-11-19 07:47:42,774 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-11-19 07:47:42,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining)
[2023-11-19 07:47:42,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining)
[2023-11-19 07:47:42,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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 07:47:42,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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 07:47:42,984 INFO L445 BasicCegarLoop]: Path program histogram: [1]
[2023-11-19 07:47:42,989 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 07:47:43,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:47:43 BoogieIcfgContainer
[2023-11-19 07:47:43,019 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 07:47:43,020 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 07:47:43,020 INFO L270 PluginConnector]: Initializing Witness Printer...
[2023-11-19 07:47:43,020 INFO L274 PluginConnector]: Witness Printer initialized
[2023-11-19 07:47:43,020 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:42" (3/4) ...
[2023-11-19 07:47:43,023 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-11-19 07:47:43,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 07:47:43,025 INFO L158 Benchmark]: Toolchain (without parser) took 2650.66ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 45.6MB in the beginning and 42.6MB in the end (delta: 3.0MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,026 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 73.4MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 07:47:43,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1365.16ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 45.4MB in the beginning and 56.2MB in the end (delta: -10.8MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.12ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 52.9MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,028 INFO L158 Benchmark]: Boogie Preprocessor took 41.04ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,028 INFO L158 Benchmark]: RCFGBuilder took 456.97ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 60.5MB in the end (delta: -9.7MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,029 INFO L158 Benchmark]: TraceAbstraction took 674.95ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 43.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,030 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 92.3MB. Free memory was 43.0MB in the beginning and 42.6MB in the end (delta: 461.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-19 07:47:43,033 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.32ms. Allocated memory is still 73.4MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 1365.16ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 45.4MB in the beginning and 56.2MB in the end (delta: -10.8MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 96.12ms. Allocated memory is still 92.3MB. Free memory was 56.2MB in the beginning and 52.9MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 41.04ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 456.97ms. Allocated memory is still 92.3MB. Free memory was 50.8MB in the beginning and 60.5MB in the end (delta: -9.7MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 674.95ms. Allocated memory is still 92.3MB. Free memory was 60.1MB in the beginning and 43.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Witness Printer took 4.26ms. Allocated memory is still 92.3MB. Free memory was 43.0MB in the beginning and 42.6MB in the end (delta: 461.1kB). 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 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_predec_52_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_predec_52b_badSink(data)
[L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_52c_badSink(data)
[L1582] --data
VAL [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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 0.1s 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
[2023-11-19 07:47:43,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cfd7bb6-1f57-425e-bcdf-65cdb4a2b088/bin/uautomizer-verify-uCwYo4JHxu/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