./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh --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 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:41:28,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:41:28,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 14:41:28,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:41:28,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:41:28,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:41:28,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:41:28,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:41:28,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:41:28,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:41:28,892 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:41:28,893 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:41:28,893 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:41:28,894 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:41:28,894 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:41:28,895 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:41:28,895 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:41:28,896 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:41:28,896 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:41:28,897 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:41:28,897 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:41:28,898 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:41:28,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:41:28,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:41:28,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:41:28,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:41:28,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:41:28,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:41:28,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:41:28,902 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:41:28,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:41:28,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:41:28,903 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:41:28,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:41:28,903 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:41:28,903 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:41:28,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:41:28,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:41:28,904 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:41:28,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:41:28,904 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:41:28,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:41:28,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:41:28,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:41:28,905 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:41:28,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:41:28,905 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_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 [2023-12-02 14:41:29,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:41:29,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:41:29,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:41:29,136 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:41:29,136 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:41:29,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2023-12-02 14:41:31,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:41:32,099 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:41:32,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2023-12-02 14:41:32,122 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data/ad513cb2a/5cde449c1a0c457c98668bd1b7c1baf9/FLAG3f016257b [2023-12-02 14:41:32,136 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data/ad513cb2a/5cde449c1a0c457c98668bd1b7c1baf9 [2023-12-02 14:41:32,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:41:32,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:41:32,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:41:32,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:41:32,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:41:32,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:41:32" (1/1) ... [2023-12-02 14:41:32,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc1e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:32, skipping insertion in model container [2023-12-02 14:41:32,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:41:32" (1/1) ... [2023-12-02 14:41:32,216 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:41:32,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:41:32,946 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:41:33,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:41:33,172 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:33,172 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:33,172 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:33,172 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:33,173 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:33,180 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:41:33,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33 WrapperNode [2023-12-02 14:41:33,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:41:33,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:41:33,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:41:33,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:41:33,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,243 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2023-12-02 14:41:33,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:41:33,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:41:33,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:41:33,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:41:33,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,262 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:41:33,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:41:33,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:41:33,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:41:33,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (1/1) ... [2023-12-02 14:41:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:41:33,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:41:33,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:41:33,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:41:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 14:41:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 14:41:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 14:41:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:41:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 14:41:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:41:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:41:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:41:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:41:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 14:41:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:41:33,477 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:41:33,479 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:41:33,591 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:41:33,626 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:41:33,626 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 14:41:33,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:41:33 BoogieIcfgContainer [2023-12-02 14:41:33,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:41:33,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:41:33,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:41:33,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:41:33,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:41:32" (1/3) ... [2023-12-02 14:41:33,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5f6e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:41:33, skipping insertion in model container [2023-12-02 14:41:33,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:33" (2/3) ... [2023-12-02 14:41:33,635 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5f6e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:41:33, skipping insertion in model container [2023-12-02 14:41:33,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:41:33" (3/3) ... [2023-12-02 14:41:33,637 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2023-12-02 14:41:33,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:41:33,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:41:33,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:41:33,709 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;@6ce42aff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:41:33,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:41:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:41:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:41:33,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:41:33,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:41:33,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 14:41:33,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:41:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash -745452939, now seen corresponding path program 1 times [2023-12-02 14:41:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:41:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794609642] [2023-12-02 14:41:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:41:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:41:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:41:33,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:41:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:41:33,928 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 14:41:33,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:41:33,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 14:41:33,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 14:41:33,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:41:33,937 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 14:41:33,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:41:33,956 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-02 14:41:33,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:41:33 BoogieIcfgContainer [2023-12-02 14:41:33,966 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:41:33,967 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:41:33,967 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:41:33,967 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:41:33,967 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:41:33" (3/4) ... [2023-12-02 14:41:33,969 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:41:33,970 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:41:33,972 INFO L158 Benchmark]: Toolchain (without parser) took 1831.04ms. Allocated memory is still 167.8MB. Free memory was 125.6MB in the beginning and 74.8MB in the end (delta: 50.8MB). Peak memory consumption was 53.2MB. Max. memory is 16.1GB. [2023-12-02 14:41:33,972 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:41:33,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1039.35ms. Allocated memory is still 167.8MB. Free memory was 125.6MB in the beginning and 112.4MB in the end (delta: 13.1MB). Peak memory consumption was 53.2MB. Max. memory is 16.1GB. [2023-12-02 14:41:33,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.46ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 110.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:41:33,974 INFO L158 Benchmark]: Boogie Preprocessor took 25.96ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 108.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:41:33,974 INFO L158 Benchmark]: RCFGBuilder took 357.01ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 93.3MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 14:41:33,975 INFO L158 Benchmark]: TraceAbstraction took 335.45ms. Allocated memory is still 167.8MB. Free memory was 92.5MB in the beginning and 74.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 14:41:33,975 INFO L158 Benchmark]: Witness Printer took 3.97ms. Allocated memory is still 167.8MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:41:33,978 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1039.35ms. Allocated memory is still 167.8MB. Free memory was 125.6MB in the beginning and 112.4MB in the end (delta: 13.1MB). Peak memory consumption was 53.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.46ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 110.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.96ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 108.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.01ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 93.3MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 335.45ms. Allocated memory is still 167.8MB. Free memory was 92.5MB in the beginning and 74.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.97ms. Allocated memory is still 167.8MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1571. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_multiply_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_multiply_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] COND TRUE data < 0 VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] data * 2 VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=19occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 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 [2023-12-02 14:41:33,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh --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 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:41:35,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:41:36,008 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 14:41:36,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:41:36,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:41:36,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:41:36,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:41:36,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:41:36,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:41:36,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:41:36,045 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:41:36,046 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:41:36,046 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:41:36,047 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:41:36,047 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:41:36,048 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:41:36,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:41:36,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:41:36,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:41:36,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:41:36,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:41:36,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:41:36,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:41:36,052 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:41:36,053 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:41:36,053 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:41:36,053 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:41:36,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:41:36,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:41:36,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:41:36,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:41:36,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:41:36,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:41:36,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:41:36,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:41:36,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:41:36,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:41:36,057 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:41:36,058 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:41:36,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:41:36,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:41:36,058 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:41:36,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:41:36,059 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_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376ee0639763b07c2274d2fee61fe1466a9b43bfbf7a1e08def008915e70d884 [2023-12-02 14:41:36,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:41:36,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:41:36,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:41:36,351 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:41:36,351 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:41:36,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2023-12-02 14:41:39,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:41:39,458 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:41:39,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2023-12-02 14:41:39,480 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data/077262be6/37231b76e209415e8320b06fac30aa9e/FLAG4e27f2e20 [2023-12-02 14:41:39,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/data/077262be6/37231b76e209415e8320b06fac30aa9e [2023-12-02 14:41:39,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:41:39,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:41:39,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:41:39,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:41:39,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:41:39,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:41:39" (1/1) ... [2023-12-02 14:41:39,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@345b19f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:39, skipping insertion in model container [2023-12-02 14:41:39,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:41:39" (1/1) ... [2023-12-02 14:41:39,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:41:40,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:41:40,375 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:41:40,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:41:40,606 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:40,606 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:40,607 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:40,607 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:40,607 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:41:40,615 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:41:40,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40 WrapperNode [2023-12-02 14:41:40,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:41:40,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:41:40,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:41:40,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:41:40,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,677 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-12-02 14:41:40,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:41:40,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:41:40,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:41:40,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:41:40,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,716 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:41:40,717 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:41:40,718 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:41:40,718 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:41:40,719 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (1/1) ... [2023-12-02 14:41:40,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:41:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:41:40,753 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:41:40,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:41:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 14:41:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 14:41:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 14:41:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:41:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:41:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:41:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:41:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:41:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:41:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 14:41:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 14:41:40,954 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:41:40,956 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:41:41,105 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:41:41,139 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:41:41,139 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 14:41:41,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:41:41 BoogieIcfgContainer [2023-12-02 14:41:41,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:41:41,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:41:41,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:41:41,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:41:41,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:41:39" (1/3) ... [2023-12-02 14:41:41,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1582a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:41:41, skipping insertion in model container [2023-12-02 14:41:41,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:41:40" (2/3) ... [2023-12-02 14:41:41,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1582a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:41:41, skipping insertion in model container [2023-12-02 14:41:41,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:41:41" (3/3) ... [2023-12-02 14:41:41,150 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_22_bad.i [2023-12-02 14:41:41,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:41:41,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:41:41,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:41:41,221 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;@7232857a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:41:41,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:41:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 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) [2023-12-02 14:41:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 14:41:41,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:41:41,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:41:41,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 14:41:41,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:41:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1240293870, now seen corresponding path program 1 times [2023-12-02 14:41:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:41:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780619557] [2023-12-02 14:41:41,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:41:41,257 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 [2023-12-02 14:41:41,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:41:41,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:41:41,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:41:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:41:41,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:41:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:41:41,481 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 14:41:41,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:41:41,483 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 14:41:41,485 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 14:41:41,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:41:41,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:41:41,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 14:41:41,697 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:41:41,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-12-02 14:41:41,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:41:41 BoogieIcfgContainer [2023-12-02 14:41:41,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:41:41,726 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:41:41,726 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:41:41,726 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:41:41,727 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:41:41" (3/4) ... [2023-12-02 14:41:41,729 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:41:41,730 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:41:41,731 INFO L158 Benchmark]: Toolchain (without parser) took 2234.82ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 78.3MB in the end (delta: 10.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2023-12-02 14:41:41,732 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:41:41,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1118.43ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 83.7MB in the end (delta: 4.7MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2023-12-02 14:41:41,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.14ms. Allocated memory is still 115.3MB. Free memory was 83.7MB in the beginning and 80.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:41:41,734 INFO L158 Benchmark]: Boogie Preprocessor took 38.59ms. Allocated memory is still 115.3MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:41:41,734 INFO L158 Benchmark]: RCFGBuilder took 422.43ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 61.2MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:41:41,735 INFO L158 Benchmark]: TraceAbstraction took 582.84ms. Allocated memory is still 115.3MB. Free memory was 60.6MB in the beginning and 78.9MB in the end (delta: -18.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:41:41,735 INFO L158 Benchmark]: Witness Printer took 4.30ms. Allocated memory is still 115.3MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:41:41,738 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 79.7MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1118.43ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 83.7MB in the end (delta: 4.7MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.14ms. Allocated memory is still 115.3MB. Free memory was 83.7MB in the beginning and 80.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.59ms. Allocated memory is still 115.3MB. Free memory was 80.7MB in the beginning and 78.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 422.43ms. Allocated memory is still 115.3MB. Free memory was 78.6MB in the beginning and 61.2MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 582.84ms. Allocated memory is still 115.3MB. Free memory was 60.6MB in the beginning and 78.9MB in the end (delta: -18.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.30ms. Allocated memory is still 115.3MB. Free memory is still 78.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1571. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_multiply_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_multiply_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal) VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] COND TRUE data < 0 VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] data * 2 VAL [CWE191_Integer_Underflow__int_fgets_multiply_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1583]: 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 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 [2023-12-02 14:41:41,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02b89918-fb8f-4a35-8e4a-a71221117127/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample