./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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_499bccd9-15c1-4c87-b079-3cc910f81c35/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 590289637fb2d37e2763c88c5c7a07cf8acbeb4b4f809060f0fc1b8a75897f82 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:58:22,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:58:22,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 14:58:23,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:58:23,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:58:23,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:58:23,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:58:23,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:58:23,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:58:23,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:58:23,030 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:58:23,031 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:58:23,031 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:58:23,032 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:58:23,032 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:58:23,033 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:58:23,033 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:58:23,034 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:58:23,035 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:58:23,035 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:58:23,036 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:58:23,037 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:58:23,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:58:23,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:58:23,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:58:23,039 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:58:23,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:58:23,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:58:23,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:58:23,040 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:58:23,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:58:23,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:58:23,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:58:23,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:58:23,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:58:23,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:58:23,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:23,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:58:23,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:58:23,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:58:23,043 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:58:23,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:58:23,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:58:23,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:58:23,044 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:58:23,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:58:23,045 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_499bccd9-15c1-4c87-b079-3cc910f81c35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 590289637fb2d37e2763c88c5c7a07cf8acbeb4b4f809060f0fc1b8a75897f82 [2023-12-02 14:58:23,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:58:23,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:58:23,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:58:23,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:58:23,297 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:58:23,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i [2023-12-02 14:58:26,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:58:26,445 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:58:26,446 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i [2023-12-02 14:58:26,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data/d20d8fe4d/52c0a5c864d9494a93e5550a698fc732/FLAGe847cce25 [2023-12-02 14:58:26,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data/d20d8fe4d/52c0a5c864d9494a93e5550a698fc732 [2023-12-02 14:58:26,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:58:26,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:58:26,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:26,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:58:26,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:58:26,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:26" (1/1) ... [2023-12-02 14:58:26,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ae48f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:26, skipping insertion in model container [2023-12-02 14:58:26,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:26" (1/1) ... [2023-12-02 14:58:26,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:58:27,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:27,273 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:58:27,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:27,551 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:27,551 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:27,551 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:27,551 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:27,559 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:58:27,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27 WrapperNode [2023-12-02 14:58:27,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:27,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:27,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:58:27,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:58:27,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,609 INFO L138 Inliner]: procedures = 498, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-12-02 14:58:27,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:27,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:58:27,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:58:27,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:58:27,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:58:27,636 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:58:27,636 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:58:27,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:58:27,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (1/1) ... [2023-12-02 14:58:27,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:27,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:27,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:58:27,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:58:27,701 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 14:58:27,702 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:58:27,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 14:58:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 14:58:27,826 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:58:27,828 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:58:27,931 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:58:27,983 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:58:27,983 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:58:27,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:27 BoogieIcfgContainer [2023-12-02 14:58:27,985 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:58:27,988 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:58:27,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:58:27,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:58:27,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:58:26" (1/3) ... [2023-12-02 14:58:27,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2b6792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:27, skipping insertion in model container [2023-12-02 14:58:27,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:27" (2/3) ... [2023-12-02 14:58:27,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2b6792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:27, skipping insertion in model container [2023-12-02 14:58:27,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:27" (3/3) ... [2023-12-02 14:58:27,994 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i [2023-12-02 14:58:28,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:58:28,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:58:28,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:58:28,056 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;@7edeeaf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:58:28,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:58:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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 14:58:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 14:58:28,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:28,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:28,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 14:58:28,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash 507122637, now seen corresponding path program 1 times [2023-12-02 14:58:28,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:58:28,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673926078] [2023-12-02 14:58:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:58:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:58:28,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:58:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:58:28,288 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 14:58:28,290 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:58:28,291 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 14:58:28,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 14:58:28,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 14:58:28,298 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 14:58:28,302 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:58:28,315 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-02 14:58:28,318 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 14:58:28,318 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 14:58:28,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:58:28 BoogieIcfgContainer [2023-12-02 14:58:28,324 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:58:28,325 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:58:28,325 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:58:28,325 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:58:28,326 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:27" (3/4) ... [2023-12-02 14:58:28,328 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:58:28,329 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:58:28,330 INFO L158 Benchmark]: Toolchain (without parser) took 1840.30ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 100.8MB in the beginning and 117.0MB in the end (delta: -16.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-12-02 14:58:28,331 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory was 93.2MB in the beginning and 93.1MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:58:28,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1068.70ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 100.8MB in the beginning and 103.8MB in the end (delta: -3.0MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2023-12-02 14:58:28,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.86ms. Allocated memory is still 163.6MB. Free memory was 103.8MB in the beginning and 101.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 14:58:28,333 INFO L158 Benchmark]: Boogie Preprocessor took 25.98ms. Allocated memory is still 163.6MB. Free memory was 101.0MB in the beginning and 99.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:58:28,334 INFO L158 Benchmark]: RCFGBuilder took 348.66ms. Allocated memory is still 163.6MB. Free memory was 99.6MB in the beginning and 84.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 14:58:28,334 INFO L158 Benchmark]: TraceAbstraction took 336.69ms. Allocated memory is still 163.6MB. Free memory was 84.2MB in the beginning and 117.0MB in the end (delta: -32.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:58:28,335 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 163.6MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:58:28,338 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 136.3MB. Free memory was 93.2MB in the beginning and 93.1MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1068.70ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 100.8MB in the beginning and 103.8MB in the end (delta: -3.0MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.86ms. Allocated memory is still 163.6MB. Free memory was 103.8MB in the beginning and 101.0MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.98ms. Allocated memory is still 163.6MB. Free memory was 101.0MB in the beginning and 99.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.66ms. Allocated memory is still 163.6MB. Free memory was 99.6MB in the beginning and 84.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 336.69ms. Allocated memory is still 163.6MB. Free memory was 84.2MB in the beginning and 117.0MB in the end (delta: -32.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 163.6MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - 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: 1560]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1569. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fscanf_sub_16_bad() [L1550] int data; [L1551] data = 0 [L1552] COND TRUE 1 [L1557] COND TRUE 1 [L1560] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1560]: 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, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 14:58:28,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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_499bccd9-15c1-4c87-b079-3cc910f81c35/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 590289637fb2d37e2763c88c5c7a07cf8acbeb4b4f809060f0fc1b8a75897f82 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:58:30,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:58:30,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 14:58:30,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:58:30,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:58:30,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:58:30,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:58:30,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:58:30,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:58:30,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:58:30,521 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:58:30,522 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:58:30,522 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:58:30,523 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:58:30,523 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:58:30,524 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:58:30,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:58:30,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 14:58:30,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:58:30,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 14:58:30,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:58:30,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 14:58:30,528 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:58:30,529 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:58:30,529 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 14:58:30,530 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:58:30,530 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:58:30,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 14:58:30,531 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:58:30,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:58:30,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:58:30,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:58:30,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:58:30,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:30,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:58:30,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:58:30,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 14:58:30,534 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:58:30,534 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:58:30,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:58:30,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 14:58:30,535 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:58:30,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:58:30,536 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_499bccd9-15c1-4c87-b079-3cc910f81c35/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 590289637fb2d37e2763c88c5c7a07cf8acbeb4b4f809060f0fc1b8a75897f82 [2023-12-02 14:58:30,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:58:30,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:58:30,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:58:30,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:58:30,841 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:58:30,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i [2023-12-02 14:58:33,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:58:34,029 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:58:34,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i [2023-12-02 14:58:34,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data/1af900753/2f5b94a15e644708bd5d584afc2bc90d/FLAG37ddfbf5c [2023-12-02 14:58:34,068 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/data/1af900753/2f5b94a15e644708bd5d584afc2bc90d [2023-12-02 14:58:34,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:58:34,072 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:58:34,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:34,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:58:34,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:58:34,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:34" (1/1) ... [2023-12-02 14:58:34,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545b61d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:34, skipping insertion in model container [2023-12-02 14:58:34,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:34" (1/1) ... [2023-12-02 14:58:34,136 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:58:34,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:34,920 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:58:35,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:58:35,166 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:35,167 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:35,167 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:35,167 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:58:35,176 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:58:35,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35 WrapperNode [2023-12-02 14:58:35,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:58:35,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:35,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:58:35,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:58:35,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,245 INFO L138 Inliner]: procedures = 503, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-12-02 14:58:35,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:58:35,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:58:35,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:58:35,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:58:35,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:58:35,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:58:35,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:58:35,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:58:35,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (1/1) ... [2023-12-02 14:58:35,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:58:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:58:35,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:58:35,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:58:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 14:58:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 14:58:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:58:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:58:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:58:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:58:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:58:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 14:58:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:58:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 14:58:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 14:58:35,533 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:58:35,535 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:58:35,676 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:58:35,740 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:58:35,740 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 14:58:35,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:35 BoogieIcfgContainer [2023-12-02 14:58:35,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:58:35,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:58:35,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:58:35,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:58:35,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:58:34" (1/3) ... [2023-12-02 14:58:35,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecd973a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:35, skipping insertion in model container [2023-12-02 14:58:35,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:35" (2/3) ... [2023-12-02 14:58:35,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecd973a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:35, skipping insertion in model container [2023-12-02 14:58:35,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:35" (3/3) ... [2023-12-02 14:58:35,751 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_sub_16_bad.i [2023-12-02 14:58:35,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:58:35,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 14:58:35,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:58:35,839 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;@56b8c94c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:58:35,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 14:58:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 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 14:58:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:58:35,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:35,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:35,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 14:58:35,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1283278029, now seen corresponding path program 1 times [2023-12-02 14:58:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:58:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916908957] [2023-12-02 14:58:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:35,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:58:35,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:58:35,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:58:35,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 14:58:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:58:36,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 14:58:36,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:58:36,054 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 14:58:36,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:58:36,055 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:58:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916908957] [2023-12-02 14:58:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916908957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:58:36,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:58:36,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:58:36,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117231255] [2023-12-02 14:58:36,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:58:36,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 14:58:36,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:58:36,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 14:58:36,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 14:58:36,100 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 13 states have internal predecessors, (18), 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) Second operand has 2 states, 2 states have (on average 4.0) 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 14:58:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:58:36,134 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2023-12-02 14:58:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 14:58:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) 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 14:58:36,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:58:36,145 INFO L225 Difference]: With dead ends: 29 [2023-12-02 14:58:36,145 INFO L226 Difference]: Without dead ends: 11 [2023-12-02 14:58:36,148 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 14:58:36,152 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:58:36,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 14:58:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-02 14:58:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-02 14:58:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 14:58:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 14:58:36,193 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2023-12-02 14:58:36,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:58:36,193 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 14:58:36,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) 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 14:58:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 14:58:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:58:36,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:58:36,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:58:36,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:58:36,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:58:36,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 14:58:36,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:58:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1283276107, now seen corresponding path program 1 times [2023-12-02 14:58:36,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:58:36,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759593626] [2023-12-02 14:58:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:58:36,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:58:36,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:58:36,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:58:36,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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 14:58:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:58:36,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 14:58:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 14:58:36,579 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 14:58:36,579 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 14:58:36,581 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 14:58:36,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 14:58:36,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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 14:58:36,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:58:36,790 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 14:58:36,793 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 14:58:36,806 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-12-02 14:58:36,809 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 14:58:36,809 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 14:58:36,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:58:36 BoogieIcfgContainer [2023-12-02 14:58:36,817 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 14:58:36,817 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 14:58:36,817 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 14:58:36,817 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 14:58:36,818 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:35" (3/4) ... [2023-12-02 14:58:36,819 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 14:58:36,820 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 14:58:36,821 INFO L158 Benchmark]: Toolchain (without parser) took 2748.79ms. Allocated memory is still 119.5MB. Free memory was 92.1MB in the beginning and 56.3MB in the end (delta: 35.8MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2023-12-02 14:58:36,821 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 41.2MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:58:36,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1103.65ms. Allocated memory is still 119.5MB. Free memory was 92.1MB in the beginning and 59.7MB in the end (delta: 32.4MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-12-02 14:58:36,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.94ms. Allocated memory is still 119.5MB. Free memory was 59.7MB in the beginning and 56.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:58:36,823 INFO L158 Benchmark]: Boogie Preprocessor took 42.21ms. Allocated memory is still 119.5MB. Free memory was 56.9MB in the beginning and 54.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 14:58:36,823 INFO L158 Benchmark]: RCFGBuilder took 452.08ms. Allocated memory is still 119.5MB. Free memory was 54.9MB in the beginning and 88.5MB in the end (delta: -33.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-12-02 14:58:36,824 INFO L158 Benchmark]: TraceAbstraction took 1072.54ms. Allocated memory is still 119.5MB. Free memory was 87.8MB in the beginning and 56.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 14:58:36,824 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 119.5MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:58:36,827 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 41.2MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1103.65ms. Allocated memory is still 119.5MB. Free memory was 92.1MB in the beginning and 59.7MB in the end (delta: 32.4MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.94ms. Allocated memory is still 119.5MB. Free memory was 59.7MB in the beginning and 56.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.21ms. Allocated memory is still 119.5MB. Free memory was 56.9MB in the beginning and 54.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.08ms. Allocated memory is still 119.5MB. Free memory was 54.9MB in the beginning and 88.5MB in the end (delta: -33.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1072.54ms. Allocated memory is still 119.5MB. Free memory was 87.8MB in the beginning and 56.3MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 119.5MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - 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: 1560]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1569. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fscanf_sub_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1557] COND TRUE 1 [L1560] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1560]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 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, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 4 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=17occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 56 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 14:58:36,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_499bccd9-15c1-4c87-b079-3cc910f81c35/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