./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 488900364aeb7144f2ff9e9661db1f041fd2181d2115cca1b9f99fed94287fbb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:20:18,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:20:18,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 19:20:18,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:20:18,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:20:18,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:20:18,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:20:18,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:20:18,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:20:18,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:20:18,825 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:20:18,826 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:20:18,826 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:20:18,827 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:20:18,827 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:20:18,828 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:20:18,828 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:20:18,829 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:20:18,829 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:20:18,830 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:20:18,830 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:20:18,832 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:20:18,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:20:18,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:20:18,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:20:18,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:20:18,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:20:18,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:20:18,836 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:20:18,836 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 19:20:18,837 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:20:18,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:20:18,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:20:18,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:20:18,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:20:18,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:20:18,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:18,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:20:18,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:20:18,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:20:18,841 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:20:18,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:20:18,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:20:18,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:20:18,843 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:20:18,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:20:18,844 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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 488900364aeb7144f2ff9e9661db1f041fd2181d2115cca1b9f99fed94287fbb [2023-12-02 19:20:19,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:20:19,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:20:19,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:20:19,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:20:19,111 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:20:19,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i [2023-12-02 19:20:21,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:20:22,195 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:20:22,196 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i [2023-12-02 19:20:22,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data/1fd76b21c/699e6ffca7434746b5a1045b4f107a45/FLAGc2e6ca0a6 [2023-12-02 19:20:22,236 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data/1fd76b21c/699e6ffca7434746b5a1045b4f107a45 [2023-12-02 19:20:22,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:20:22,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:20:22,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:22,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:20:22,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:20:22,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:22" (1/1) ... [2023-12-02 19:20:22,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e60e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:22, skipping insertion in model container [2023-12-02 19:20:22,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:22" (1/1) ... [2023-12-02 19:20:22,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:20:23,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:23,028 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:20:23,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:23,279 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:23,279 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:23,279 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:23,279 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:23,287 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:20:23,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23 WrapperNode [2023-12-02 19:20:23,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:23,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:23,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:20:23,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:20:23,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,363 INFO L138 Inliner]: procedures = 498, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-12-02 19:20:23,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:23,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:20:23,364 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:20:23,364 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:20:23,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,382 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:20:23,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:20:23,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:20:23,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:20:23,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (1/1) ... [2023-12-02 19:20:23,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:23,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:20:23,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:20:23,450 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 19:20:23,450 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 19:20:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:20:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 19:20:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:20:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:20:23,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:20:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:20:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 19:20:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 19:20:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:20:23,584 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:20:23,587 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:20:23,695 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:20:23,739 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:20:23,739 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:20:23,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:23 BoogieIcfgContainer [2023-12-02 19:20:23,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:20:23,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:20:23,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:20:23,748 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:20:23,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:20:22" (1/3) ... [2023-12-02 19:20:23,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b8759c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:23, skipping insertion in model container [2023-12-02 19:20:23,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:23" (2/3) ... [2023-12-02 19:20:23,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b8759c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:23, skipping insertion in model container [2023-12-02 19:20:23,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:23" (3/3) ... [2023-12-02 19:20:23,751 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i [2023-12-02 19:20:23,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:20:23,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 19:20:23,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:20:23,812 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;@243209cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:20:23,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 19:20:23,816 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 19:20:23,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:20:23,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:23,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:23,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 19:20:23,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash -992745437, now seen corresponding path program 1 times [2023-12-02 19:20:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599877136] [2023-12-02 19:20:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:23,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:23,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:20:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:24,043 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 19:20:24,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:20:24,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 19:20:24,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 19:20:24,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:20:24,051 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 19:20:24,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:20:24,069 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet104 [2023-12-02 19:20:24,072 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 19:20:24,072 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 19:20:24,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:20:24 BoogieIcfgContainer [2023-12-02 19:20:24,079 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:20:24,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:20:24,080 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:20:24,080 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:20:24,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:23" (3/4) ... [2023-12-02 19:20:24,083 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 19:20:24,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:20:24,085 INFO L158 Benchmark]: Toolchain (without parser) took 1844.87ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 117.5MB in the beginning and 148.6MB in the end (delta: -31.1MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2023-12-02 19:20:24,085 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:24,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1047.54ms. Allocated memory is still 161.5MB. Free memory was 117.5MB in the beginning and 125.5MB in the end (delta: -7.9MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2023-12-02 19:20:24,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.30ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 125.4MB in the beginning and 185.3MB in the end (delta: -59.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-12-02 19:20:24,087 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 218.1MB. Free memory was 185.3MB in the beginning and 183.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:24,088 INFO L158 Benchmark]: RCFGBuilder took 352.22ms. Allocated memory is still 218.1MB. Free memory was 183.2MB in the beginning and 167.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 19:20:24,088 INFO L158 Benchmark]: TraceAbstraction took 334.50ms. Allocated memory is still 218.1MB. Free memory was 167.5MB in the beginning and 149.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 19:20:24,088 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 218.1MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:24,092 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 161.5MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1047.54ms. Allocated memory is still 161.5MB. Free memory was 117.5MB in the beginning and 125.5MB in the end (delta: -7.9MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.30ms. Allocated memory was 161.5MB in the beginning and 218.1MB in the end (delta: 56.6MB). Free memory was 125.4MB in the beginning and 185.3MB in the end (delta: -59.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 218.1MB. Free memory was 185.3MB in the beginning and 183.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 352.22ms. Allocated memory is still 218.1MB. Free memory was 183.2MB in the beginning and 167.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 334.50ms. Allocated memory is still 218.1MB. Free memory was 167.5MB in the beginning and 149.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 218.1MB. Free memory is still 148.6MB. 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~nondet104 - 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: 1561]: 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 1570. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fscanf_predec_04_bad() [L1552] int data; [L1553] data = 0 [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1558] COND TRUE \read(STATIC_CONST_TRUE) [L1561] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1561]: 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, 0.1s 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 19:20:24,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 488900364aeb7144f2ff9e9661db1f041fd2181d2115cca1b9f99fed94287fbb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:20:25,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:20:26,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 19:20:26,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:20:26,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:20:26,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:20:26,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:20:26,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:20:26,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:20:26,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:20:26,109 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:20:26,109 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:20:26,110 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:20:26,110 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:20:26,111 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:20:26,111 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:20:26,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:20:26,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:20:26,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:20:26,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:20:26,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:20:26,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:20:26,115 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:20:26,115 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 19:20:26,116 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 19:20:26,116 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 19:20:26,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:20:26,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:20:26,117 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:20:26,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:20:26,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 19:20:26,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:20:26,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:20:26,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:26,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:20:26,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:20:26,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:20:26,120 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 19:20:26,120 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:26,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:20:26,121 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:20:26,121 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:20:26,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:20:26,121 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_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 488900364aeb7144f2ff9e9661db1f041fd2181d2115cca1b9f99fed94287fbb [2023-12-02 19:20:26,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:20:26,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:20:26,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:20:26,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:20:26,425 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:20:26,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i [2023-12-02 19:20:29,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:20:29,529 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:20:29,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i [2023-12-02 19:20:29,554 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data/c9134da3f/820a890969ae44bfb10625a13958ffae/FLAGc55b30a5a [2023-12-02 19:20:29,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/data/c9134da3f/820a890969ae44bfb10625a13958ffae [2023-12-02 19:20:29,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:20:29,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:20:29,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:29,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:20:29,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:20:29,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:29" (1/1) ... [2023-12-02 19:20:29,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e21ebdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:29, skipping insertion in model container [2023-12-02 19:20:29,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:29" (1/1) ... [2023-12-02 19:20:29,636 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:20:30,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:30,533 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:20:30,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:30,731 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:30,731 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:30,731 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:30,731 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:20:30,737 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:20:30,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30 WrapperNode [2023-12-02 19:20:30,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:30,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:30,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:20:30,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:20:30,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,793 INFO L138 Inliner]: procedures = 503, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-12-02 19:20:30,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:30,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:20:30,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:20:30,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:20:30,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:20:30,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:20:30,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:20:30,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:20:30,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (1/1) ... [2023-12-02 19:20:30,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:30,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:20:30,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:20:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 19:20:30,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 19:20:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:20:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 19:20:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:20:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:20:30,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:20:30,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 19:20:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:20:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 19:20:30,895 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 19:20:31,041 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:20:31,043 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:20:31,182 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:20:31,223 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:20:31,223 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 19:20:31,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:31 BoogieIcfgContainer [2023-12-02 19:20:31,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:20:31,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:20:31,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:20:31,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:20:31,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:20:29" (1/3) ... [2023-12-02 19:20:31,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311afe29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:31, skipping insertion in model container [2023-12-02 19:20:31,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:30" (2/3) ... [2023-12-02 19:20:31,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311afe29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:31, skipping insertion in model container [2023-12-02 19:20:31,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:31" (3/3) ... [2023-12-02 19:20:31,232 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_predec_04_bad.i [2023-12-02 19:20:31,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:20:31,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 19:20:31,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:20:31,292 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;@6b6a7bbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:20:31,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 19:20:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 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 19:20:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:20:31,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:31,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:31,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 19:20:31,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -724627866, now seen corresponding path program 1 times [2023-12-02 19:20:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:31,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436162950] [2023-12-02 19:20:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:31,319 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 19:20:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:31,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:31,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:31,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:20:31,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:31,484 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 19:20:31,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:31,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:31,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436162950] [2023-12-02 19:20:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436162950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:31,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:31,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:20:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838606911] [2023-12-02 19:20:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:31,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:20:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:20:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:31,517 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 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 3 states, 3 states have (on average 2.6666666666666665) 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 19:20:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:31,559 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-12-02 19:20:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:20:31,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 19:20:31,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:31,567 INFO L225 Difference]: With dead ends: 29 [2023-12-02 19:20:31,567 INFO L226 Difference]: Without dead ends: 11 [2023-12-02 19:20:31,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:31,573 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:31,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:20:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-02 19:20:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-02 19:20:31,598 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 19:20:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 19:20:31,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2023-12-02 19:20:31,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:31,600 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 19:20:31,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 19:20:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 19:20:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:20:31,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:31,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:31,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:31,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:31,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 19:20:31,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:31,806 INFO L85 PathProgramCache]: Analyzing trace with hash -724629788, now seen corresponding path program 1 times [2023-12-02 19:20:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260848097] [2023-12-02 19:20:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:31,807 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 19:20:31,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:31,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:31,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:31,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:20:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:32,005 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 19:20:32,005 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:20:32,007 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 19:20:32,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 19:20:32,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:32,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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 19:20:32,216 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 19:20:32,219 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:20:32,232 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-02 19:20:32,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 19:20:32,237 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 19:20:32,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:20:32 BoogieIcfgContainer [2023-12-02 19:20:32,246 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:20:32,247 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:20:32,247 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:20:32,247 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:20:32,248 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:31" (3/4) ... [2023-12-02 19:20:32,250 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 19:20:32,251 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:20:32,252 INFO L158 Benchmark]: Toolchain (without parser) took 2678.35ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 72.5MB in the beginning and 88.7MB in the end (delta: -16.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-12-02 19:20:32,252 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 67.1MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:32,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1163.37ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 60.9MB in the end (delta: 11.2MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2023-12-02 19:20:32,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.43ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 57.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 19:20:32,254 INFO L158 Benchmark]: Boogie Preprocessor took 34.54ms. Allocated memory is still 98.6MB. Free memory was 57.9MB in the beginning and 55.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:32,255 INFO L158 Benchmark]: RCFGBuilder took 394.39ms. Allocated memory is still 98.6MB. Free memory was 55.8MB in the beginning and 69.5MB in the end (delta: -13.7MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:32,255 INFO L158 Benchmark]: TraceAbstraction took 1019.78ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.9MB in the beginning and 88.7MB in the end (delta: -19.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 19:20:32,256 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 119.5MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:32,259 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 67.1MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1163.37ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 60.9MB in the end (delta: 11.2MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.43ms. Allocated memory is still 98.6MB. Free memory was 60.9MB in the beginning and 57.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.54ms. Allocated memory is still 98.6MB. Free memory was 57.9MB in the beginning and 55.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 394.39ms. Allocated memory is still 98.6MB. Free memory was 55.8MB in the beginning and 69.5MB in the end (delta: -13.7MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1019.78ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.9MB in the beginning and 88.7MB in the end (delta: -19.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 119.5MB. Free memory is still 88.7MB. 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~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: 1561]: 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 1570. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fscanf_predec_04_bad() [L1552] int data; [L1553] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1558] COND TRUE \read(STATIC_CONST_TRUE) [L1561] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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, 10 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 11 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 2 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 19:20:32,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64dfab14-4b47-4a66-ac6a-7bbf75a2894f/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