./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 71233b704a887dd9fc786070e887e4b97c786b9c03fd7cf637150724d8ffd9ad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:22:39,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:22:39,467 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 13:22:39,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:22:39,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:22:39,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:22:39,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:22:39,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:22:39,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:22:39,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:22:39,497 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:22:39,498 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:22:39,498 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:22:39,499 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:22:39,499 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:22:39,500 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:22:39,500 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:22:39,501 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:22:39,501 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:22:39,502 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:22:39,503 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:22:39,503 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:22:39,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:22:39,505 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:22:39,505 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:22:39,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:22:39,506 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:22:39,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:22:39,507 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:22:39,507 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:22:39,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:22:39,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:22:39,508 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:22:39,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:22:39,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:22:39,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:22:39,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:22:39,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:22:39,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:22:39,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:22:39,510 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:22:39,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:22:39,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:22:39,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:22:39,511 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:22:39,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:22:39,511 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_f3fba928-7b78-43b4-9c9c-4509fe796f64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71233b704a887dd9fc786070e887e4b97c786b9c03fd7cf637150724d8ffd9ad [2023-12-02 13:22:39,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:22:39,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:22:39,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:22:39,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:22:39,753 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:22:39,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i [2023-12-02 13:22:42,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:22:42,745 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:22:42,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i [2023-12-02 13:22:42,768 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data/1e3034778/ac40d5f5b22e480686e847c8d2e09f6a/FLAG7f79f823c [2023-12-02 13:22:42,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data/1e3034778/ac40d5f5b22e480686e847c8d2e09f6a [2023-12-02 13:22:42,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:22:42,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:22:42,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:22:42,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:22:42,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:22:42,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:22:42" (1/1) ... [2023-12-02 13:22:42,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db5e04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:42, skipping insertion in model container [2023-12-02 13:22:42,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:22:42" (1/1) ... [2023-12-02 13:22:42,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:22:43,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:22:43,601 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:22:43,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:22:43,868 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:43,868 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:43,868 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:43,868 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:43,869 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:43,876 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:22:43,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43 WrapperNode [2023-12-02 13:22:43,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:22:43,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:22:43,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:22:43,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:22:43,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,939 INFO L138 Inliner]: procedures = 499, calls = 69, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-12-02 13:22:43,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:22:43,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:22:43,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:22:43,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:22:43,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:22:43,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:22:43,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:22:43,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:22:43,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (1/1) ... [2023-12-02 13:22:43,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:22:43,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:43,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:22:44,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:22:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 13:22:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 13:22:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 13:22:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:22:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:22:44,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:22:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:22:44,180 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:22:44,182 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:22:44,301 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:22:44,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:22:44,337 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:22:44,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:44 BoogieIcfgContainer [2023-12-02 13:22:44,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:22:44,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:22:44,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:22:44,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:22:44,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:22:42" (1/3) ... [2023-12-02 13:22:44,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c75800d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:22:44, skipping insertion in model container [2023-12-02 13:22:44,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:43" (2/3) ... [2023-12-02 13:22:44,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c75800d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:22:44, skipping insertion in model container [2023-12-02 13:22:44,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:44" (3/3) ... [2023-12-02 13:22:44,346 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i [2023-12-02 13:22:44,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:22:44,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 13:22:44,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:22:44,405 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;@36b2fadb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:22:44,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 13:22:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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 13:22:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 13:22:44,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:44,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:44,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 13:22:44,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash 781811922, now seen corresponding path program 1 times [2023-12-02 13:22:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:44,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544551685] [2023-12-02 13:22:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:22:44,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:22:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544551685] [2023-12-02 13:22:44,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544551685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:44,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:22:44,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:22:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96382636] [2023-12-02 13:22:44,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:22:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:22:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:22:44,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:22:44,964 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 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) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:22:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:45,022 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-12-02 13:22:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:22:45,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-12-02 13:22:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:45,030 INFO L225 Difference]: With dead ends: 16 [2023-12-02 13:22:45,030 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 13:22:45,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:22:45,036 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:45,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 24 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:22:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 13:22:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-02 13:22:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:22:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-12-02 13:22:45,070 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2023-12-02 13:22:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:45,071 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-12-02 13:22:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:22:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-02 13:22:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 13:22:45,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:45,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:45,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:22:45,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 13:22:45,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1533634139, now seen corresponding path program 1 times [2023-12-02 13:22:45,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:22:45,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970353532] [2023-12-02 13:22:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:22:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:22:45,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:22:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:22:45,150 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:22:45,151 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:22:45,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 13:22:45,154 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 13:22:45,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:22:45,158 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 13:22:45,162 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:22:45,177 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet105 [2023-12-02 13:22:45,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:22:45 BoogieIcfgContainer [2023-12-02 13:22:45,186 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:22:45,187 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:22:45,187 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:22:45,188 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:22:45,188 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:44" (3/4) ... [2023-12-02 13:22:45,190 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:22:45,191 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:22:45,192 INFO L158 Benchmark]: Toolchain (without parser) took 2405.16ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 88.0MB in the beginning and 75.3MB in the end (delta: 12.7MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2023-12-02 13:22:45,192 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:22:45,193 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1089.70ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 88.0MB in the beginning and 101.2MB in the end (delta: -13.2MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2023-12-02 13:22:45,193 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.51ms. Allocated memory is still 159.4MB. Free memory was 100.4MB in the beginning and 97.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:22:45,194 INFO L158 Benchmark]: Boogie Preprocessor took 27.38ms. Allocated memory is still 159.4MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:22:45,194 INFO L158 Benchmark]: RCFGBuilder took 370.73ms. Allocated memory is still 159.4MB. Free memory was 96.1MB in the beginning and 80.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 13:22:45,195 INFO L158 Benchmark]: TraceAbstraction took 845.72ms. Allocated memory is still 159.4MB. Free memory was 79.4MB in the beginning and 75.3MB in the end (delta: 4.1MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-12-02 13:22:45,195 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 159.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:22:45,198 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 130.0MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1089.70ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 88.0MB in the beginning and 101.2MB in the end (delta: -13.2MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.51ms. Allocated memory is still 159.4MB. Free memory was 100.4MB in the beginning and 97.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.38ms. Allocated memory is still 159.4MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.73ms. Allocated memory is still 159.4MB. Free memory was 96.1MB in the beginning and 80.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 845.72ms. Allocated memory is still 159.4MB. Free memory was 79.4MB in the beginning and 75.3MB in the end (delta: 4.1MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 159.4MB. Free memory is still 75.3MB. 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~nondet105 - 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: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of large string literal at line 1581. 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); [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=2147483651, argc=2147483651, argv={2147483655:2147483652}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE190_Integer_Overflow__int_fgets_preinc_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] EXPR *dataPtr1 = data [L1554-L1568] { int data = *dataPtr1; { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } *dataPtr1 = data; } [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] ++data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, data={7:0}, dataPtr1={7:0}, dataPtr2={7:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 13:22:45,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 71233b704a887dd9fc786070e887e4b97c786b9c03fd7cf637150724d8ffd9ad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:22:47,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:22:47,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 13:22:47,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:22:47,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:22:47,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:22:47,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:22:47,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:22:47,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:22:47,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:22:47,250 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:22:47,251 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:22:47,252 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:22:47,252 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:22:47,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:22:47,253 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:22:47,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:22:47,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:22:47,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:22:47,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:22:47,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:22:47,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:22:47,257 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:22:47,257 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:22:47,257 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:22:47,258 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:22:47,258 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:22:47,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:22:47,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:22:47,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:22:47,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:22:47,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:22:47,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:22:47,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:22:47,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:22:47,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:22:47,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:22:47,261 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:22:47,262 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:22:47,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:22:47,262 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:22:47,262 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:22:47,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:22:47,263 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_f3fba928-7b78-43b4-9c9c-4509fe796f64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71233b704a887dd9fc786070e887e4b97c786b9c03fd7cf637150724d8ffd9ad [2023-12-02 13:22:47,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:22:47,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:22:47,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:22:47,552 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:22:47,552 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:22:47,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i [2023-12-02 13:22:50,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:22:50,642 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:22:50,643 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i [2023-12-02 13:22:50,667 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data/a8590d4c6/d5e81cf412e34972aaec1b56c305d59d/FLAG6cf918173 [2023-12-02 13:22:50,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/data/a8590d4c6/d5e81cf412e34972aaec1b56c305d59d [2023-12-02 13:22:50,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:22:50,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:22:50,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:22:50,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:22:50,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:22:50,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:22:50" (1/1) ... [2023-12-02 13:22:50,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e663b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:50, skipping insertion in model container [2023-12-02 13:22:50,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:22:50" (1/1) ... [2023-12-02 13:22:50,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:22:51,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:22:51,537 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:22:51,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:22:51,778 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:51,778 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:51,778 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:51,778 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:51,779 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:22:51,786 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:22:51,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51 WrapperNode [2023-12-02 13:22:51,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:22:51,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:22:51,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:22:51,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:22:51,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,847 INFO L138 Inliner]: procedures = 504, calls = 69, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-12-02 13:22:51,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:22:51,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:22:51,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:22:51,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:22:51,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:22:51,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:22:51,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:22:51,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:22:51,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (1/1) ... [2023-12-02 13:22:51,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:22:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:22:51,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:22:51,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:22:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 13:22:51,961 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 13:22:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 13:22:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:22:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:22:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:22:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:22:51,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:22:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:22:51,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:22:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:22:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 13:22:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 13:22:52,123 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:22:52,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:22:52,288 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:22:52,319 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:22:52,320 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 13:22:52,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:52 BoogieIcfgContainer [2023-12-02 13:22:52,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:22:52,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:22:52,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:22:52,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:22:52,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:22:50" (1/3) ... [2023-12-02 13:22:52,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f13607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:22:52, skipping insertion in model container [2023-12-02 13:22:52,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:22:51" (2/3) ... [2023-12-02 13:22:52,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f13607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:22:52, skipping insertion in model container [2023-12-02 13:22:52,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:52" (3/3) ... [2023-12-02 13:22:52,328 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_preinc_32_bad.i [2023-12-02 13:22:52,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:22:52,343 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 13:22:52,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:22:52,386 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;@41b416ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:22:52,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 13:22:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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 13:22:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:22:52,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:52,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:52,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 13:22:52,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1695413602, now seen corresponding path program 1 times [2023-12-02 13:22:52,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:22:52,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736757962] [2023-12-02 13:22:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:52,412 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 13:22:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:22:52,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 13:22:52,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 13:22:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:22:52,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:22:52,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:22:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:22:52,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:22:52,595 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:22:52,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736757962] [2023-12-02 13:22:52,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736757962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:22:52,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:22:52,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:22:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026673699] [2023-12-02 13:22:52,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:22:52,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:22:52,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:22:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:22:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:22:52,632 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) Second operand has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:22:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:22:52,659 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2023-12-02 13:22:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:22:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 13:22:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:22:52,667 INFO L225 Difference]: With dead ends: 18 [2023-12-02 13:22:52,668 INFO L226 Difference]: Without dead ends: 14 [2023-12-02 13:22:52,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:22:52,674 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:22:52,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:22:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-02 13:22:52,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-02 13:22:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:22:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-02 13:22:52,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2023-12-02 13:22:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:22:52,709 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-02 13:22:52,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:22:52,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-02 13:22:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:22:52,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:22:52,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:22:52,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 13:22:52,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 13:22:52,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 13:22:52,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:22:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1018214055, now seen corresponding path program 1 times [2023-12-02 13:22:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:22:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862976659] [2023-12-02 13:22:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:22:52,917 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 13:22:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:22:52,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 13:22:52,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 (3)] Waiting until timeout for monitored process [2023-12-02 13:22:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:22:53,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:22:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:22:53,172 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 13:22:53,172 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:22:53,174 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 13:22:53,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 13:22:53,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 (3)] Ended with exit code 0 [2023-12-02 13:22:53,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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 13:22:53,382 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 13:22:53,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:22:53,397 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-12-02 13:22:53,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:22:53 BoogieIcfgContainer [2023-12-02 13:22:53,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:22:53,406 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:22:53,406 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:22:53,406 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:22:53,406 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:22:52" (3/4) ... [2023-12-02 13:22:53,408 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:22:53,409 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:22:53,409 INFO L158 Benchmark]: Toolchain (without parser) took 2722.93ms. Allocated memory is still 111.1MB. Free memory was 83.7MB in the beginning and 60.2MB in the end (delta: 23.5MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2023-12-02 13:22:53,409 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 73.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:22:53,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1099.44ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 83.4MB in the end (delta: -42.9kB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2023-12-02 13:22:53,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.70ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 80.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:22:53,411 INFO L158 Benchmark]: Boogie Preprocessor took 37.60ms. Allocated memory is still 111.1MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:22:53,412 INFO L158 Benchmark]: RCFGBuilder took 434.30ms. Allocated memory is still 111.1MB. Free memory was 78.4MB in the beginning and 60.4MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 13:22:53,412 INFO L158 Benchmark]: TraceAbstraction took 1082.53ms. Allocated memory is still 111.1MB. Free memory was 59.5MB in the beginning and 60.2MB in the end (delta: -680.9kB). Peak memory consumption was 94.4kB. Max. memory is 16.1GB. [2023-12-02 13:22:53,412 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 111.1MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:22:53,415 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 73.4MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1099.44ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 83.4MB in the end (delta: -42.9kB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.70ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 80.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.60ms. Allocated memory is still 111.1MB. Free memory was 80.5MB in the beginning and 78.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.30ms. Allocated memory is still 111.1MB. Free memory was 78.4MB in the beginning and 60.4MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1082.53ms. Allocated memory is still 111.1MB. Free memory was 59.5MB in the beginning and 60.2MB in the end (delta: -680.9kB). Peak memory consumption was 94.4kB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 111.1MB. Free memory is still 60.2MB. 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~nondet103 - 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: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of large string literal at line 1581. 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); [L1581] 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) [L1581] 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}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE190_Integer_Overflow__int_fgets_preinc_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] EXPR *dataPtr1 = data [L1554-L1568] { int data = *dataPtr1; { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } *dataPtr1 = data; } [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] ++data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, data={-9223372036854775805:0}, dataPtr1={-9223372036854775805:0}, dataPtr2={-9223372036854775805:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 13:22:53,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3fba928-7b78-43b4-9c9c-4509fe796f64/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